Subject: Oncore gps question From: Undisclosed Date: Wed, 2 Jan 2002 09:45:18 -0800 I finally got back to playing with the Oncore GPS after many months and have not been able to get it going. I plugged in the antenna and placed it largest flat-side down, connected a 12v bat to the GND and +Pwr term, the red light blinks, that's about it. I loaded the GPS DOS version Bob Smith described many months ago to the PSN and can obtain the vital product data from the device but it never finds a sender. I also put the device out back in the open and got the same results. Could somebody give me the basics of operation and refer me to any other software to drive the device? Regards, Steve Hammond __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: Oncore gps question From: Undisclosed Date: Wed, 02 Jan 2002 10:04:23 -0800 Steve- I just got mine working a few months ago. At first I was unsuccessful, but it turned out that was because I was trying it inside my house (I incorrectly assumed that it would get something). After trying various things, I got a long extension cord and carried the computer and gps system outside where it worked perfectly. My computer/seismic installation didn't allow me to mount the antenna where it could see a large percent of the sky (using a standard serial cable, I could not even get the antenna out a window. I finally wired-up a 25' serial cable and mounted the antenna outside a second story window with the gps box just inside the window and all has been working since. I investigated getting an antenna wire extension, but it seems that the signal is attenuated very quickly (1/2 or 3db per two meters of cable). You might want to start by moving the system outside temporairly to get a clear sky access, to see it it works. At 09:45 AM 1/2/02 -0800, you wrote: > >I finally got back to playing with the Oncore GPS after many months and >have not been able to get it going. I plugged in the antenna and placed it >largest flat-side down, connected a 12v bat to the GND and +Pwr term, the >red light blinks, that's about it. I loaded the GPS DOS version Bob Smith >described many months ago to the PSN and can obtain the vital product data >from the device but it never finds a sender. I also put the device out back >in the open and got the same results. > >Could somebody give me the basics of operation and refer me to any other >software to drive the device? > >Regards, Steve Hammond >__________________________________________________________ George __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: Oncore gps question From: Undisclosed Date: Wed, 02 Jan 2002 11:31:57 -0800 Hi Steve,, the first thing is to let it sit for about 20 minutes or more,,, it takes a while for it to acquire for the first time in a new location!!! I'm running the windows version of Oncore! Did you run self test??? if it comes back all zeros, that means all is OK! The two msb are for the antenna,,, bit 15 is for antenna undercurrent, bit 14 is for antenna over current. bits 0 to 7 are for the 8 channels,, bit 8 is for 1 kHz presence, bit 9 is for rom, bit 10 is for ram,, etc. BTW, I added about 10 meters of cable to the antenna without any apparent problem. I think it was UG-174 or RG-174?? it is 50 ohm, 1/8 inch cable! I set up the antenna with the short lead and watched the signal level for awhile with the antenna near the ceiling, then quickly added the 10 meter cable and noticed little if any change in the signal levels!! The weak signals (fringe area) were about the same and the strong ones were still strong! It did work in the house when I put the antenna near the ceiling and a little away from the wall, but eventually, I put it on top of the house to get a better view of the sky as I am surrounded by trees and hills. I often get 8 satellites, but occasionally get only 4, when some slip behind the trees! I also run a 10 meter serial cable from the GPS to the computer. It was a cable I used to hook up my hand held GPS (garmin Etrex) to the computer, but I didn't like to leave my handheld outside for extended periods of time. Hope this helps and good luck,,, Stephen Mortensen PSN Station #55 near Pilot Hill Ca 38.828N 120.979W steve hammond wrote: > I finally got back to playing with the Oncore GPS after many months and > have not been able to get it going. I plugged in the antenna and placed it > largest flat-side down, connected a 12v bat to the GND and +Pwr term, the > red light blinks, that's about it. I loaded the GPS DOS version Bob Smith > described many months ago to the PSN and can obtain the vital product data > from the device but it never finds a sender. I also put the device out back > in the open and got the same results. > > Could somebody give me the basics of operation and refer me to any other > software to drive the device? > > Regards, Steve Hammond __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: RE: Oncore gps question From: Undisclosed Date: Wed, 2 Jan 2002 13:10:35 -0800 Thanks George, that's what I needed to do-- What software are you using? I found a WinOncore which has all the basic functions in it. I was wondering if there was a mapping package that works with this receiver? Steve Hammond PSN Aptos, CA -----Original Message----- From: George Bush [SMTP:gbush@........ Sent: Wednesday, January 02, 2002 10:04 AM To: psn-l@.............. Subject: Re: Oncore gps question Steve- I just got mine working a few months ago. At first I was unsuccessful, but it turned out that was because I was trying it inside my house (I incorrectly assumed that it would get something). After trying various things, I got a long extension cord and carried the computer and gps system outside where it worked perfectly. My computer/seismic installation didn't allow me to mount the antenna where it could see a large percent of the sky (using a standard serial cable, I could not even get the antenna out a window. I finally wired-up a 25' serial cable and mounted the antenna outside a second story window with the gps box just inside the window and all has been working since. I investigated getting an antenna wire extension, but it seems that the signal is attenuated very quickly (1/2 or 3db per two meters of cable). You might want to start by moving the system outside temporairly to get a clear sky access, to see it it works. At 09:45 AM 1/2/02 -0800, you wrote: > >I finally got back to playing with the Oncore GPS after many months and >have not been able to get it going. I plugged in the antenna and placed it >largest flat-side down, connected a 12v bat to the GND and +Pwr term, the >red light blinks, that's about it. I loaded the GPS DOS version Bob Smith >described many months ago to the PSN and can obtain the vital product data >from the device but it never finds a sender. I also put the device out back >in the open and got the same results. > >Could somebody give me the basics of operation and refer me to any other >software to drive the device? > >Regards, Steve Hammond >__________________________________________________________ George __________________________________________________________ Public Seismic Network Mailing List (PSN-L) __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Oncore DOS software? From: Undisclosed Date: Thu, 3 Jan 2002 02:51:52 -0800 I keep seeing messages referring to GPS (Oncore ?) Dos programs. I don't seem to be able to find them on the net. Does anyone have a copy or site? Thanks tom
I keep seeing messages referring to GPS = (Oncore ?)=20 Dos programs. I don't seem to be able to find them on the net. Does = anyone have=20 a copy or site?
 
Thanks
tom
Subject: RE: Oncore gps question From: Undisclosed Date: Thu, 03 Jan 2002 09:22:17 -0800 I thought about downloading WinOncore, but so far I am just using SDR. SDR creates a data file with the location information listed and I am using this as my reported station location. I am not aware of any mapping package, but since the GPS card is intended for automotive use, there probably is a mapping package somewhere. At 01:10 PM 1/2/02 -0800, you wrote: >Thanks George, that's what I needed to do-- >What software are you using? I found a WinOncore which has all the basic >functions in it. I was wondering if there was a mapping package that works >with this receiver? > >Steve Hammond PSN Aptos, CA > George __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: RE: Oncore DOS software? From: Undisclosed Date: Thu, 3 Jan 2002 10:13:28 -0800 Torn, You should have received the zip file GPS11x9.zip. Regards, Steve Hammond PSN Aptos, CA -----Original Message----- From: Tom Frey [SMTP:tfreyis@.......... Sent: Thursday, January 03, 2002 2:52 AM To: psn-l@.............. Subject: Oncore DOS software? I keep seeing messages referring to GPS (Oncore ?) Dos programs. I don't seem to be able to find them on the net. Does anyone have a copy or site? Thanks tom << File: ATT00000.html >> __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: Oncore DOS software? From: "Larry Cochrane" cochrane@.............. Date: Thu, 3 Jan 2002 11:18:28 -0800 Steve, What does this software do? -Larry Cochrane Redwood City, PSN ----- Original Message ----- From: "steve hammond" To: Sent: Thursday, January 03, 2002 10:13 AM Subject: RE: Oncore DOS software? > Torn, You should have received the zip file GPS11x9.zip. > Regards, Steve Hammond PSN Aptos, CA > > -----Original Message----- > From: Tom Frey [SMTP:tfreyis@.......... > Sent: Thursday, January 03, 2002 2:52 AM > To: psn-l@.............. > Subject: Oncore DOS software? > > I keep seeing messages referring to GPS (Oncore ?) Dos programs. I don't > seem to be able to find them on the net. Does anyone have a copy or site? > > Thanks > tom > << File: ATT00000.html >> > __________________________________________________________ > > Public Seismic Network Mailing List (PSN-L) > > To leave this list email PSN-L-REQUEST@.............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. > __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: RE: Oncore DOS software? From: steve hammond shammon1@............. Date: Thu, 3 Jan 2002 12:42:45 -0800 Larry, I sent you the DOS zip file. The DOS version uses PF1 - PF10 for different functions. The main status screen provides log/lat time and sat position status. selftest (F8) and (F1) visible sat info are the only two that generate a response. There is also a command line QUIT is the only command I have identified. I also found a trial version of WINOncore at WWW.SYNERGY-GPS.COM that works in the NT4 and win95/98 env. It would not install on WINME. Regards, Steve Hammond -----Original Message----- Sent: Thursday, January 03, 2002 11:18 AM To: psn-l@....... Subject: Re: Oncore DOS software? Steve, What does this software do? -Larry Cochrane Redwood City, PSN ----- Original Message ----- From: "steve hammond" To: Sent: Thursday, January 03, 2002 10:13 AM Subject: RE: Oncore DOS software? > Torn, You should have received the zip file GPS11x9.zip. > Regards, Steve Hammond PSN Aptos, CA > > -----Original Message----- > From: Tom Frey [SMTP:tfreyis@attbi.com] > Sent: Thursday, January 03, 2002 2:52 AM > To: psn-l@..... > Subject: Oncore DOS software? > > I keep seeing messages referring to GPS (Oncore ?) Dos programs. I don't > seem to be able to find them on the net. Does anyone have a copy or site? > > Thanks > tom > << File: ATT00000.html >> > __________________________________________________________ > > Public Seismic Network Mailing List (PSN-L) > > To leave this list email .............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. > __________________________________________________________ Public Seismic Network Mailing List (PSN-L) __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: Oncore DOS software? From: "Tom Frey" tfreyis@......... Date: Thu, 3 Jan 2002 13:23:36 -0800 Added Command Line entries: Lat will give the Latitude Lon will give the Longitude Time (Obvious) Date (Obvious) see what else i can find __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Email address in archive files and changes to the event file processing From: "Larry Cochrane" cochrane@.............. Date: Thu, 3 Jan 2002 15:16:38 -0800 Greetings, First I want to wish everyone a Happy New Year. Today I made some changes to my web server system. The first change was to remove all email address for the PSN-L html and text archival files. This is to prevent spammers (the lowest form of life on the earth) from harvesting email address from my web site. I also modified the program that does the archiving to prevent it from showing any email address. This is done by looking for a @ and then a period in the "word" of each line of text. If a word is found that looks like an email address the filter replaces the domain name part of the address with periods. The other change was to the program that handles the new event files. The event@.............. address is getting hit my spammers. One of the things the program did is to send back an email message if there were any errors in the message. When a spammer used the address without any event files in the message, the program would send out an error message. Since spammers do not use valid return address, I would get a bounce message. Since I was getting a lot of these messages I removed the code that sends back an error message. If you send in event files you will get the message back that indicates you have successfully upload your file(s). If you forget to attach the file(s) of if some other error occurs you will not get an email message telling of the problem. Regards, Larry Cochrane Redwood City, PSN __________________________________________________________ Public Seismic Network Mailing List (PSN-L) To leave this list email PSN-L-REQUEST@.............. with the body of the message (first line only): unsubscribe See http://www.seismicnet.com/maillist.html for more information. Subject: MAPS for Motorola GPS From: Stephen & Kathy skmort@.......... Date: Fri, 04 Jan 2002 14:13:24 -0800 FYI, The question was asked about mapping software for the Motorola GPS! I got around to trying my Motorola GPS with my Street Atlas 7.0 and it works, if you put the GPS in NMEA mode!! I don't have a portable set up, but it should work just fine. It did put a dot on the SA map, of my GPS location and all of the SA GPS whizz bangs and buttons seem to work,,, i.e. sky map of sat positions, signal strength, direction of travel compass, mph, lat/long, etc. I did notice that the elevation is off (short) by about 90 feet,, which if I factor in the geoid 99 height, brings it up to the correct elevation,,,,, welcome to gps ellipsoidal height = h, geoid height = N and orthometric height = H!! Their relation ship is: h = H + N or to find my, related to sea level, height; H = h - N For my location, geoid height = -28 meter, = approx. -92 feet,,,,,, minus a minus tells me to add 92 feet to my gps reading. Your welcome to double check my math! The GPS reading ranges around 850 feet,, my GPS is physically at approx. 945 feet,, as near as I can guess, from my topo map. Stephen 38.828N 120.979W __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: VNC From: "Randall Pratt" randallpratts@.......... Date: Sat, 5 Jan 2002 23:10:34 -0600 Hello All, The topic of VNC looked interesting and useful so I tried to install and = run on my 2 systems. One is Win95 and one Win98 connected by 10/100 = peer to peer network. Results are so far "failed to connect". I'd = appreciate any help from experienced users. Please reply direct to = randallpratts@............. Thanks Randy
Hello All,
 
The topic of VNC looked interesting and = useful so I=20 tried to install and run on my 2 systems.  One is Win95 and one = Win98=20 connected by 10/100 peer to peer network.  Results are so far = "failed to=20 connect".  I'd appreciate any help from experienced users.  = Please=20 reply direct to randallpratts@..........=20
 
Thanks
Randy
Subject: Re: VNC From: "Charles R. Patton" charles.r.patton@........ Date: Sat, 05 Jan 2002 21:22:14 -0800 Personally, I'm interested in this thread and would be curious to hear what happened/happens. I'm trying to understand if it would prove useful in a VPN configuration between home and work and maybe get around using Exceed to connect a PC to a Solaris system and get some level of performance with only a 56K connection that usually hooks up at about 49K. Charles R. Patton __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: VNC From: Tom Leiper twleiper@........ Date: Sun, 6 Jan 2002 00:30:00 -0500 Randy, Did the same here, and it works perfectly. Tested on 95, 98, nt and 2000 with no problem. Are you running TCP/IP there? You need to because it uses socket connections. Make sure you install the host application. That's the one that you run "setup" with. The viewer seems to run anywhere. Tom On Sat, 5 Jan 2002 23:10:34 -0600 "Randall Pratt" writes: Hello All, The topic of VNC looked interesting and useful so I tried to install and run on my 2 systems. One is Win95 and one Win98 connected by 10/100 peer to peer network. Results are so far "failed to connect". I'd appreciate any help from experienced users. Please reply direct to randallpratts@.......... Thanks Randy
Randy,
 
Did the same here, and it works perfectly. Tested
on 95, 98, nt and 2000 with no problem. Are you
running TCP/IP there? You need to because it
uses socket connections. Make sure you install
the host application. That's the one that you run
"setup" with. The viewer seems to run anywhere.
 
Tom
 
On Sat, 5 Jan 2002 23:10:34 -0600 "Randall Pratt" <randallpratts@..........>=20 writes:
Hello All,
 
The topic of VNC looked interesting and = useful so=20 I tried to install and run on my 2 systems.  One is Win95 and one = Win98=20 connected by 10/100 peer to peer network.  Results are so far "= failed to=20 connect".  I'd appreciate any help from experienced users.  = Please=20 reply direct to randallpratts@..........=20
 
Thanks
Randy
 
Subject: Re: VNC From: Rob Vassar rvassar@..................... Date: Sat, 05 Jan 2002 22:04:17 -0800 Charles, I use VNC on Solaris all the time. Under Unix, the VNC server is actually a modified X server that has a "fake" video device driver. The session is independant of the console X display, and is persistent. I can connect from home, start a program, disconnect, drive to work, connect to my localhost with the Solaris client, and resume as a "session within a session". On PC's it's a little more complicated, and doesn't always work as well. Basicly, it steals images from the video driver, and shims in to the keyboard & mouse drivers. There's only one session on the system, and it's shared between the local console, and the remote vncviewer. (This in itself can be amusing...) It can be used over a 56k connection, and if memory serves, it's usually faster than raw X. Since this is open source code, there have been some modifications. One of the more interesting ones is "tight VNC" which does some creative compression. I haven't played with it myself, but I'm told it makes a difference. For the most part, I try to avoid doing graphics intensive tasks over VNC. I mostly stick with xterms, xemacs, and the like. Netscape will work, and will be much, much faster that xhosting it back to Exceed, but it's still not very useable. Good luck, Rob Livermore, CA __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: VNC From: Rob Vassar rvassar@..................... Date: Sat, 05 Jan 2002 22:10:39 -0800 Tom Leiper wrote: > The viewer seems to run anywhere. Buired somewhere in the docs, you'll find you don't need the client at all! Just point your web browser at the right port, and it will download a java client from the server, and run as an applet. Cheers, Rob Livermore, CA __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: VNC From: Karl Cunningham karlc@.......... Date: Sat, 5 Jan 2002 22:34:57 -0800 Hi Randy -- I've been using VNC between home and work (both directions) for a couple of years. As Tom said, you have to be running TCP/IP on both machines. One way to check is to ping from each one to the other. Once you can ping, be sure you have set a password in the VNC server setup. The server won't start if you haven't set a password. Then start the VNC viewer on one of the computers and enter the IP address of the server, with ":0" (without the quotes) after the IP address. If it connects with the server, the VNC viewer should ask for the password. If it doesn't, it will say so eventually. I'm interested to know what happens in your case. If that doesn't work, you can use telnet to see if you can connect to the VNC server. Most Windows computers come with telnet built in. Just hit start, then run, then type "telnet" (without the quotes) and hit enter. Select connect and enter the IP address of the VNC server and select port 5900. If it sees the server, it will respond with "Escape character is ^]". If you don't see this, it probably means the VNC server program isn't running. Let us know what happens. Karl Cunningham On Saturday 05 January 2002 09:10 pm, you wrote: > Hello All, > > The topic of VNC looked interesting and useful so I tried to install and > run on my 2 systems. One is Win95 and one Win98 connected by 10/100 peer > to peer network. Results are so far "failed to connect". I'd appreciate > any help from experienced users. Please reply direct to > randallpratts@.......... __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: VNC From: Tom Leiper twleiper@........ Date: Sun, 6 Jan 2002 03:48:02 -0500 On Sat, 05 Jan 2002 22:10:39 -0800 Rob Vassar writes: > Just point your web browser at the right port, and it will > download a java client from the server, and run as an applet. Just tried that too, and still works great... Tom __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: VNC From: offutt@............ Date: Sun, 6 Jan 2002 08:13:01 -0700 (MST) I'd be interested in reading mail on the list relative to VNC matters. And, I suspect others would, too. warren __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: The Alaska Public Seismic Network webpage has moved! From: Hammonds hammond@........... Date: Sun, 06 Jan 2002 08:19:57 -0900 The Alaska Public Seismic Network web page has moved to http://apsn.awcable.com . Please change your link to this web page. Happy 2002 to all! Bob Hammond Fairbanks, AK __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Geotech S-13 seismometers for sale on eBAY From: Hammonds hammond@........... Date: Sun, 06 Jan 2002 08:42:16 -0900 Three Geotech S-13 seismometers are for sale on eBAY: http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=1684963900 The price is outrageous and I'm alarmed the seller has opened one up for a picture! Buyer beware. These instruments are pretty good if the bottom seals in the case are intact. Otherwise, corrosion eats them up fast. Bob, APSN Fairbanks, AK __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: VNC From: "Randall Pratt" randallpratts@.......... Date: Sun, 6 Jan 2002 22:36:43 -0600 Hi All, Due to all the help and interest I'll come back to the list. Thanks Richard for the tip on IPX and NETBIOS. I have never seen the = other computers in Network Neighborhood and now I do. IPX was already = installed but not netbios. I encountered a missing file nwnblink.vxd as = I selected the netbios on the 98 machine. I'll have to locate this = file. Also thanks to Rob and Karl for tips. Results are still no connection. I'll summarize for all interested. (2 = columns) 98 Machine IP 169.254.144.195 95 machine IP = 169.254.144.194 Shows both in network neighborhhod Shows both in = network neighborhood Ping to 95 machine OK Ping to 98 = machine OK Telnet fails to 169.254.144.194 port 5900 Telnet Fails to = 169.254.144.195 port 5900 run server with password set run veiwer = to 169.254.144.195:0=20 = get dial up connection window and close it = get connect failed hover over VNC icon and see correct IP as set Try to connect = from IE Explorer by entering 169.254.144.195 = get dial up window then connect failed I also have set subnet mask of 255.1.2.3 on 95 machine and 255.3.2.1 on = 98 machine. I think the problem is in the dial up connection always taking over any = attempt to connect. Randy
Hi All,
 
Due to all the help and interest I'll = come back to=20 the list.
 
Thanks Richard for the tip on IPX and=20 NETBIOS.  I have never seen the other computers in Network = Neighborhood and=20 now I do.  IPX was already installed but not netbios. =20 I encountered a missing file nwnblink.vxd as I selected the netbios = on the=20 98 machine.  I'll have to locate this file.
 
Also thanks to Rob and Karl for = tips.
 
Results are still no connection.  = I'll=20 summarize for all interested.  (2 columns)
 
98 Machine  IP=20 169.254.144.195         &nbs= p;            = ;   =20 95 machine  IP 169.254.144.194
Shows both in network=20 neighborhhod           =20         Shows both in network=20 neighborhood
Ping to 95 machine OK    =             =    =20             =    =20     Ping to 98 machine OK
Telnet fails to 169.254.144.194 = port=20 5900           &nb= sp; =20 Telnet Fails to 169.254.144.195 port 5900
run server with password = set   =20             =    =20             run veiwer to=20 169.254.144.195:0
       =20             =    =20             =    =20             =    =20             =    =20     get dial up connection window and close = it
       =20             =    =20             =    =20             =    =20             =    =20     get connect failed
 
hover over VNC icon and see = correct IP as=20 set         Try to connect = from IE=20 Explorer by entering 169.254.144.195
          &nbs= p;            = ;            =             &= nbsp;           &n= bsp;           &nb= sp;  =20  get dial up window then connect failed
 
I also have set subnet mask of = 255.1.2.3 on 95=20 machine and 255.3.2.1 on 98 machine.
 
I think the problem is in the dial up = connection=20 always taking over any attempt to connect.
 
Randy
 
 
 
 
Subject: Re: VNC From: "Larry Cochrane" cochrane@.............. Date: Sun, 6 Jan 2002 21:30:42 -0800 Randall Pratt wrote: > I also have set subnet mask of 255.1.2.3 on 95 machine and 255.3.2.1 on 98 machine. The number for the subnet mask don't look right. Have you tried 255.255.255.0 on both systems? -Larry Cochrane Redwood City, PSN __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: VNC From: twleiper@........ Date: Mon, 7 Jan 2002 00:43:45 -0500 On Sun, 6 Jan 2002 22:36:43 -0600 "Randall Pratt" writes: > get dial up connection window and close it...get connect failed Go into your IE settings in the "connection" tab and change the setting to "never dial...". It is probably set to "Always dial..." or "Dial when not connected". That will take care of this particular problem. > I also have set subnet mask of 255.1.2.3 on 95 machine and 255.3.2.1 > on 98 machine. These should both be either 255.255.255.0 or 255.255.0.0 (Class C). They should NOT be different, even though you will be able to ping, and possibly even establish a socket connection, you will definitely not be able to browse. Also, make sure both machines in the network identification are in the same workgroup, and, since you do not have a domain controller, make sure you are not trying to log on to a domain in your client for windows network service. Tom __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: RE: VNC From: steve hammond shammon1@............. Date: Sun, 6 Jan 2002 23:06:35 -0800 Hi Randy, the subnet mask is used to identify which part of the IP address is the network address and what part is the host address. When a bit is set to one, it is considered to be part of the of the network address and when it is set to zero it is considered to be part of the host address. The exception to this is documented in RFC 950 which describes a standard procedure for subnetting using unused bits that had been part of the host address ( and were always set to zero and unused). The subnets you posted, 1111 0001 0010 0011 and 1111 0011 0010 0001 are uncommon however they could be utilized for a specific TCP application that depends on subnetting via the subnet mask. While I agree, the most common subnet mask is 255 255 255 0 ( or 1111 1111 1111 0000 ), one needs to ask, are you running an application that utilizes some form of subnetting via the subnet mask? If the answer is no, then based on your current IP network address, the most common subnet mask would be 255 255 255 0 because the high order bits are or'ed together to form the mask for the network address meaning it's best to keep them contiguous. Regards, Steve Hammond PSN Aptos, CA -----Original Message----- From: Randall Pratt [SMTP:randallpratts@........... Sent: Sunday, January 06, 2002 8:37 PM To: psn-l@.............. Subject: VNC Hi All, Due to all the help and interest I'll come back to the list. Thanks Richard for the tip on IPX and NETBIOS. I have never seen the other computers in Network Neighborhood and now I do. IPX was already installed but not netbios. I encountered a missing file nwnblink.vxd as I selected the netbios on the 98 machine. I'll have to locate this file. Also thanks to Rob and Karl for tips. Results are still no connection. I'll summarize for all interested. (2 columns) 98 Machine IP 169.254.144.195 95 machine IP 169.254.144.194 Shows both in network neighborhhod Shows both in network neighborhood Ping to 95 machine OK Ping to 98 machine OK Telnet fails to 169.254.144.194 port 5900 Telnet Fails to 169.254.144.195 port 5900 run server with password set run veiwer to 169.254.144.195:0 get dial up connection window and close it get connect failed hover over VNC icon and see correct IP as set Try to connect from IE Explorer by entering 169.254.144.195 get dial up window then connect failed I also have set subnet mask of 255.1.2.3 on 95 machine and 255.3.2.1 on 98 machine. I think the problem is in the dial up connection always taking over any attempt to connect. Randy << File: ATT00000.html >> __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: VNC From: "Randall Pratt" randallpratts@.......... Date: Mon, 7 Jan 2002 10:07:01 -0600 Thanks again for the help. Correcting the subnet mask to 255.255.255.0 has allowed connection to = the VNC server with control of the programs on it. As for the telnet to = port 5900 on the other machine or a connect on = http://169.254.144.195:5900/ I get the same response of RFB 003.003 from = either machine to the the other.=20 Randy
Thanks again for the help.
 
Correcting the subnet mask to = 255.255.255.0 has=20 allowed connection to the VNC server with control of the programs on = it. =20 As for the telnet to port 5900 on the other machine or a connect on = http://169.254.144.195:5900/ I = get the=20 same response of RFB 003.003 from either machine to the the=20 other. 
 
Randy
Subject: Re: VNC From: "angel@......... angel@chiriqui.com Date: Mon, 7 Jan 2002 11:29:06 -0500 Hello Randall, Try using port 5800 which is default on lall the systems I have installed angel Monday, January 07, 2002, 11:07:01 AM, you wrote: RP> Thanks again for the help. RP> Correcting the subnet mask to 255.255.255.0 has allowed connection to the VNC server with control of the programs on it. A s for the telnet to port 5900 on the other machine or a connect on RP> http://169.254.144.195:5900/ I get the same response of RFB 003.003 from either machine to the the other. RP> Randy -- Best regards, angel mailto:angel@............ __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: VNC From: Tom Leiper twleiper@........ Date: Mon, 7 Jan 2002 12:24:05 -0500 That's because I believe the VNC program uses port 5800, not port 5900, and you add the viewer number to the port number (default viewer number is 0) so you should try http://IPAddress:5800 or 5801, etc., and get back to us... On Mon, 7 Jan 2002 10:07:01 -0600 "Randall Pratt" writes: Thanks again for the help. Correcting the subnet mask to 255.255.255.0 has allowed connection to the VNC server with control of the programs on it. As for the telnet to port 5900 on the other machine or a connect on http://169.254.144.195:5900/ I get the same response of RFB 003.003 from either machine to the the other. Randy
That's because I believe the VNC program uses port 5800,
not port 5900, and you add the viewer number to the port
number (default viewer number is 0) so you should try
http://IPAddress:5800  or = 5801,=20 etc., and get back to us...
 
On Mon, 7 Jan 2002 10:07:01 -0600 "Randall Pratt" <randallpratts@..........>=20 writes:
Thanks again for the help.
 
Correcting the subnet mask to 255.255.= 255.0 has=20 allowed connection to the VNC server with control of the programs on it.&= nbsp;=20 As for the telnet to port 5900 on the other machine or a connect on = http://169.254.144.195:5900/ I = get the=20 same response of RFB 003.003 from either machine to the the=20 other. 
 
Randy
 
Subject: Re: VNC From: Karl Cunningham karlc@.......... Date: Mon, 7 Jan 2002 10:55:57 -0800 RFB 003.003 is the proper repsonse to a telnet session to port 5900 on the server. My apologies; I neglected to include that line when I told you what to expect. If you now use the VNC viewer, you should be in business. Port 5800 is used by the web/java interface to establish a connection and download the java vnc applet. It then uses port 5900 for the actual vnc session. When using the VNC viewer to connect directly to the server, only port 5900 is used. Karl On Monday 07 January 2002 08:07 am, you wrote: > Thanks again for the help. > > Correcting the subnet mask to 255.255.255.0 has allowed connection to the > VNC server with control of the programs on it. As for the telnet to port > 5900 on the other machine or a connect on http://169.254.144.195:5900/ I > get the same response of RFB 003.003 from either machine to the the other. > > Randy __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: VNC From: "Randall Pratt" randallpratts@.......... Date: Mon, 7 Jan 2002 22:22:01 -0600 All works with port 5800. =20 Thanks all. Randy
All works with port 5800.  =
 
Thanks all.
 
Randy
Subject: Re: VNC From: "Barry" gbl@....... Date: Mon, 7 Jan 2002 20:25:58 -0800 Karl,Angel et al Pardon my stupid question, but where does the IP address come from? Does this apply when on the internet or does it apply also when connecting only two computers in the house? Regards Barry __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re[2]: VNC From: "angel@......... angel@chiriqui.com Date: Mon, 7 Jan 2002 23:40:58 -0500 Hello Barry, I think you will always have an IP, on the internet they are called public IP's and on a home or internal they are called private IP's. When the are private they and be fixed or assigned by a DHCP server. All this assumes that we are talking about TCP/IP, netbuie and IPX do other things I know little about. from the DOS prompt type "ipconfig" and it will give you details of your machine. there is also windows command that will give you the same info but I forget what it is. I should add that you should never try to makeup public IP's it's a sure route to trouble!! :) angel Monday, January 07, 2002, 11:25:58 PM, you wrote: B> Karl,Angel et al B> Pardon my stupid question, but where does the IP address come from? B> Does this apply when on the internet or does it apply also when connecting B> only two computers in the house? B> Regards B> Barry B> __________________________________________________________ B> Public Seismic Network Mailing List (PSN-L) B> To leave this list email PSN-L-REQUEST@.............. with B> the body of the message (first line only): unsubscribe B> See http://www.seismicnet.com/maillist.html for more information. -- Best regards, angel mailto:angel@............ __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: Re[2]: VNC From: "Barry" gbl@....... Date: Mon, 7 Jan 2002 20:51:37 -0800 Angel Thanks. I guess when I try to run VNC it may be apparent. Regards Barry __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: Re[2]: VNC From: twleiper@........ Date: Tue, 8 Jan 2002 09:59:31 -0500 On Mon, 7 Jan 2002 20:51:37 -0800 "Barry" writes: > Angel > Thanks. I guess when I try to run VNC it may be apparent. It may not. The older Windows network setup often only utilized Netbeui and IPX. Check in your network setup and make sure you are running the TCP/IP protocol. You can run it in addition to the others. If you have a computer connected to a router or cable modem, and it has "Server assigned" or "automatic" for the IP settings, you will have to add another network adapter to connect on your local LAN, since the WEB connection IP settings could change from time to time. If you have no IP set up on your LAN, there are published standards available on the WEB for various IP schemes for private and public networks. One range recommended for private LAN use is 192.168.xxx.xxx, and the "xxx" can be any value between 0 and 255. So you can set your LAN up with your WEB computer at 192.168.0.1 and the others at 192.168.0.1, 192.168.0.2, etc. If you do have a WEB connected computer, you can share that connection with the other computers on the LAN. The easiest way is to run Windows ME on that computer, which has internet connection sharing built in, and a nice set-up utility that makes it easy to set up your other computers to share the connection. Tom __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: A diamagnetic graphite seismogram web reference From: meredithlamb meredithlamb@............. Date: Tue, 08 Jan 2002 13:07:49 -0700 Hi all, David Lamb in Texas recently was successful in obtaining a seismogram of a quake off the coast of Nicaragua using his experimental diamagnetic N-S seismometer. This gram appears to be the first known amateur detected quake using this approach with spectrographic grade graphite as the levitated mass with a optical/light sensing arrangement. Personally, I think the gram phases look to be quite well defined and quite encouraging for this seismometer method of quake detection. The web site page is at: http://diamagnetics.users2.50megs.com/page065.html Take care all, Meredith Lamb __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: A diamagnetic graphite seismogram web reference From: "Raul J. Alvarez" ralvarez@........ Date: Tue, 08 Jan 2002 15:45:25 -0700 Hi Meredith and all, Have you published any information on this design? Thanks, Raul Alvarez meredithlamb wrote: > Hi all, > > David Lamb in Texas recently was successful in obtaining > a seismogram of a quake off the coast of Nicaragua using > his experimental diamagnetic N-S seismometer. This gram > appears to be the first known amateur detected quake using > this approach with spectrographic grade graphite as the > levitated mass with a optical/light sensing arrangement. > > Personally, I think the gram phases look to be quite well > defined and quite encouraging for this seismometer method > of quake detection. > > The web site page is at: > > http://diamagnetics.users2.50megs.com/page065.html > > Take care all, Meredith Lamb > __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: A diamagnetic graphite seismogram web reference From: meredithlamb meredithlamb@............. Date: Tue, 08 Jan 2002 20:21:42 -0700 Hi Raul, No; I've not published any complete design on the web, the model is somewhat similar in mechanics to that on the web page below, except that Davids unit uses different steel/iron and different magnets therein. David has a knack for designing different versions and is working on another variation with some promise of a even longer period, with a simpler design. http://diamagnetics.users2.50megs.com/page019.html Take care, Meredith Lamb Hi Raul,

No; I've not published any complete design on the web, the
model is somewhat similar in mechanics to that on the web
page below, except that Davids unit uses different steel/iron
and different magnets therein.  David has a knack for designing
different versions and is working on another variation with
some promise of a even longer period, with a simpler design.
http://diamagnetics.users2.50megs.com/page019.html

Take care, Meredith Lamb
 
 
 
 
 
 
 
 
 
 

  Subject: Re: Re[2]: VNC From: "Barry" gbl@....... Date: Tue, 8 Jan 2002 21:24:54 -0800 To all I got my win xp computer (viewer) to view& control my win98 computer(server). It works great! I used private addresses :192.168.0.1 & 192.168.0.2 with a subnet mask of 255.255.255.0 Thanks all Barry ps Now I need to connect to the computer in the garage where the sensors are and hopefully view SDR running . I also need to read how I could access the server(s) from the internet. ----- Original Message ----- From: To: Sent: Tuesday, January 08, 2002 6:59 AM Subject: Re: Re[2]: VNC > On Mon, 7 Jan 2002 20:51:37 -0800 "Barry" writes: > > Angel > > Thanks. I guess when I try to run VNC it may be apparent. > > It may not. The older Windows network setup often only utilized > Netbeui and IPX. Check in your network setup and make sure > you are running the TCP/IP protocol. You can run it in addition > to the others. If you have a computer connected to a router or > cable modem, and it has "Server assigned" or "automatic" for > the IP settings, you will have to add another network adapter > to connect on your local LAN, since the WEB connection IP > settings could change from time to time. If you have no IP set > up on your LAN, there are published standards available on the > WEB for various IP schemes for private and public networks. > One range recommended for private LAN use is 192.168.xxx.xxx, > and the "xxx" can be any value between 0 and 255. So you can > set your LAN up with your WEB computer at 192.168.0.1 and > the others at 192.168.0.1, 192.168.0.2, etc. If you do have a > WEB connected computer, you can share that connection with > the other computers on the LAN. The easiest way is to run > Windows ME on that computer, which has internet connection > sharing built in, and a nice set-up utility that makes it easy to > set up your other computers to share the connection. > > Tom > __________________________________________________________ > > Public Seismic Network Mailing List (PSN-L) > > To leave this list email PSN-L-REQUEST@.............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. > > __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: VNC From: "Barry" gbl@....... Date: Tue, 8 Jan 2002 21:30:43 -0800 Larry I was just thinking, do you think the time function interrupt issue in SDR would be affected by VNC like it is with PcAnywhere etc? Regards Barry __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: VNC From: "Larry Cochrane" cochrane@.............. Date: Tue, 8 Jan 2002 21:42:02 -0800 I was just going to send out an email about this. Yes, there maybe a problem with the interrupt need for time keeping. Give it a try and let us know how it works out. One option is to upgrade to WinSDR. Then you will be able to monitor the datalogger remotely using VNC or PcAnywhere. -Larry Cochrane Redwood City, PSN ----- Original Message ----- From: "Barry" To: Sent: Tuesday, January 08, 2002 9:30 PM Subject: Re: VNC > Larry > I was just thinking, do you think the time function interrupt issue in > SDR would be affected by VNC like it is with PcAnywhere etc? > > Regards > Barry > > > __________________________________________________________ > > Public Seismic Network Mailing List (PSN-L) > > To leave this list email PSN-L-REQUEST@.............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. > __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: chart paper & pens From: "Kareem, JooJoo" temp@............. Date: Tue, 8 Jan 2002 22:04:35 -0800 Does anyone know where I can retrieve more chart paper and perhaps a few new pens for my PS2 recording system? The paper dimensions are 13"x 24". Byeeeeee... Kareem Message

Does = anyone know=20 where I can retrieve more chart paper and perhaps a few new pens for my = PS2=20 recording system?
The = paper dimensions=20 are 13"x 24".
 
 
Byeeeeee...
Kareem =
 
Subject: Re: Re[2]: VNC From: twleiper@........ Date: Wed, 9 Jan 2002 01:14:29 -0500 On Tue, 8 Jan 2002 21:24:54 -0800 "Barry" writes: > I also need to read how I could access the server(s) from the internet. Works the same way. Just run "winipcfg" from the command line to get the IP address assigned to you on your adapter connected to the WEB. If you are running through a "proxy server" it probably will not work, and if you have a personal firewall, you may have to set up a rule allowing port access to your computer by remote machines. Tom __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: MARK SENSOR From: "Francesco" franuc@......... Date: Wed, 9 Jan 2002 13:13:59 +0100 Hi to all from some weeks I'm using in my station 3 Mark L4 sensors with Larry's = ampli board. The output signal is very high, and a small events also near me saturats = the amplitude. The gain is at min. What I do to resolve this problem? In another station of our network, we use the Mauro Mariotti's ampli = board with the input resistor of 22k and all works fine. Can I do the same change? regards Fraancesco Italy
Hi to all
from some weeks I'm using in my station = 3 Mark L4=20 sensors with Larry's ampli board.
The output signal is very high, and a = small events=20 also near me saturats the amplitude.
The gain is at min.
 
What I do to resolve this = problem?
 
In another station of our network, we = use the Mauro=20 Mariotti's ampli board with the input resistor of 22k and all works=20 fine.
 
Can I do the same change?
 
regards
 
Fraancesco    =20 Italy
Subject: Re: Re[2]: VNC From: Karl Cunningham karlc@.......... Date: Wed, 09 Jan 2002 09:14:18 -0800 Barry -- Be careful putting a VNC server on the Internet. You are granting complete control of your computer to anyone who can guess your password, so make it a good one. If you are only going to grant access to a limited number of people, a way of improving security is to have your firewall only allow access from certain IP addresses on the Internet. Otherwise, you can probably limit access with user accounts in W2K or NT. Also, I've found that VNC doesn't do a particularly good job with windows that change in subtle ways, such as WinSdr as it draws traces in real time. Apparently, WinSdr isn't aware that the screen is changing and doesn't sent out the new information. I've found you can improve it by constantly moving the mouse over the area that's changing. A bit of a hassle. Anyone know of a better way? Karl Cunningham --On Tuesday, January 08, 2002 9:24 PM -0800 Barry wrote: > To all > I got my win xp computer (viewer) to view& control my win98 > computer(server). It works great! I used private addresses :192.168.0.1 & > 192.168.0.2 with a subnet mask of 255.255.255.0 > Thanks all > Barry > > ps Now I need to connect to the computer in the garage where the sensors > are and hopefully view SDR running . I also need to read how I could > access the server(s) from the internet. __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: Re[2]: VNC From: twleiper@........ Date: Wed, 9 Jan 2002 12:26:53 -0500 On Wed, 09 Jan 2002 09:14:18 -0800 Karl Cunningham writes: .... > A bit of a hassle. Anyone know of a better way? I have been comparing VNC and PcAnywhere for the last week in LAN, WAN and WEB environments, and PcAnywhere is far superior...at a cost. But, for occasional use, the VNC would suffice. The one thing I really like is the browser access...that is really nice, but the speed and update issues outweigh that in our commercial application environment. Also, PcAnywhere allows you to set up user accounts on the host, which thus requires both the correct user AND password to access the port, and also assigns levels of access/control for each user. Essential for use on the WEB. But on a private / home LAN for occasional use...VNC rules. Tom __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: A diamagnetic graphite seismogrm web reference From: "meredith lamb" meredithlamb@............. Date: Wed, 9 Jan 2002 11:28:22 -0700

The below is a forwarded reply to Raul (and all) on PSN email from David Lamb:
 
Raul; this is David.  Just have part of the amplifier design and tilt control
circuitry on paper.  Our designs keep changing with improvements. Just
recently got computerized thanks to Meredith.  Did not even have the time
set precisely on the SDR readout.  Computer time was set to a cheap
wall clock.  Could be a minute or two off.
 
The current working unit design of the SDR readout can fit in the palm of
your hand, as far as the magnets/iron structure for the magnets and the
graphite structure.  But; this design is soon to be replaced by a new design
that already has a 30 second (if undamped) oscillation period.
 
The amplifier consists of 3 very low noise op-amps.  The tilt control
circuitry is an additional op-amp.  The sensing optics uses special  heat
sink LEDs and gallium arsenide photodiodes from Hammamatsu, which
operate at a very low power for a quiesent, no noise, long life operation.
The low power of the LED has no thermal heating effect influences on
the optical flag of the 3 gram floating graphite structure.
 
So, this is the basis of the seismometer.
 
David Lamb
 
 
 
 
 

Subject: RE: MARK SENSOR From: steve hammond shammon1@............. Date: Wed, 9 Jan 2002 10:31:44 -0800 Fraancesco, Have you tried a T-PAD? Experement with two 10k resistors. Place a 10k resistor in series in one of the inputs and another 10k resistor in parallel across both inputs to form a T-junction. While this will attenuate the output, it will also change the period of the sensor so you need to find a value that works for both. Regards, Steve Hammond PSN Aptos, CA -----Original Message----- From: Francesco [SMTP:franuc@.......... Sent: Wednesday, January 09, 2002 4:14 AM To: psn-l@.............. Subject: MARK SENSOR Hi to all from some weeks I'm using in my station 3 Mark L4 sensors with Larry's ampli board. The output signal is very high, and a small events also near me saturats the amplitude. The gain is at min. What I do to resolve this problem? In another station of our network, we use the Mauro Mariotti's ampli board with the input resistor of 22k and all works fine. Can I do the same change? regards Fraancesco Italy << File: ATT00001.html >> __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: Re[2]: VNC From: "Randall Pratt" randallpratts@.......... Date: Wed, 9 Jan 2002 12:31:54 -0600 Tom, If you put your mouse pointer over the icon showing the VNC server running it will show the IP address in use. When I dial up it appends the local IP to the web server IP. I still have not connected over the web though. Randy ----- Original Message ----- From: To: Sent: Wednesday, January 09, 2002 12:14 AM Subject: Re: Re[2]: VNC > On Tue, 8 Jan 2002 21:24:54 -0800 "Barry" writes: > > I also need to read how I could access the server(s) from the internet. > > Works the same way. Just run "winipcfg" from the command > line to get the IP address assigned to you on your adapter > connected to the WEB. If you are running through a "proxy server" > it probably will not work, and if you have a personal firewall, you > may have to set up a rule allowing port access to your computer > by remote machines. > > Tom > __________________________________________________________ > > Public Seismic Network Mailing List (PSN-L) > > To leave this list email PSN-L-REQUEST@.............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: MARK SENSOR From: "Francesco" franuc@......... Date: Wed, 9 Jan 2002 20:02:29 +0100 How it changes the natural period of the sensor? L4 (and L3d) is 1 herz Francesco ----- Original Message ----- From: "steve hammond" To: Sent: Wednesday, January 09, 2002 7:31 PM Subject: RE: MARK SENSOR > Fraancesco, Have you tried a T-PAD? Experement with two 10k resistors. > Place a 10k resistor in series in one of the inputs and another 10k > resistor in parallel across both inputs to form a T-junction. While this > will attenuate the output, it will also change the period of the sensor so > you need to find a value that works for both. > > Regards, Steve Hammond PSN Aptos, CA > > -----Original Message----- > From: Francesco [SMTP:franuc@.......... > Sent: Wednesday, January 09, 2002 4:14 AM > To: psn-l@.............. > Subject: MARK SENSOR > > Hi to all > from some weeks I'm using in my station 3 Mark L4 sensors with Larry's > ampli board. > The output signal is very high, and a small events also near me saturats > the amplitude. > The gain is at min. > > What I do to resolve this problem? > > In another station of our network, we use the Mauro Mariotti's ampli board > with the input resistor of 22k and all works fine. > > Can I do the same change? > > regards > > Fraancesco Italy > << File: ATT00001.html >> > __________________________________________________________ > > Public Seismic Network Mailing List (PSN-L) > > To leave this list email PSN-L-REQUEST@.............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. > __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: Re[2]: VNC From: twleiper@........ Date: Wed, 9 Jan 2002 14:10:39 -0500 On Wed, 9 Jan 2002 12:31:54 -0600 "Randall Pratt" writes: .... > When I dial up it appends the local IP to the web server IP. Does it show it waiting on both addresses? What address would you use for a LAN machine if it "switches" to the WEB address. PcAnywhere will show the host listening on both... Actually, I'll check myself... Tom __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: MARK SENSOR From: "Larry Cochrane" cochrane@.............. Date: Wed, 9 Jan 2002 14:39:46 -0800 Francesco, See the following schematic = http://www.seismicnet.com/onlinedocs/voltdrop.gif on how to lower the = input voltage to the Amp/Filter board. -Larry Cochrane Redwood City, PSN ----- Original Message -----=20 From: Francesco=20 To: psn-l@................. Sent: Wednesday, January 09, 2002 4:13 AM Subject: MARK SENSOR Hi to all from some weeks I'm using in my station 3 Mark L4 sensors with Larry's = ampli board. The output signal is very high, and a small events also near me = saturats the amplitude. The gain is at min. What I do to resolve this problem? In another station of our network, we use the Mauro Mariotti's ampli = board with the input resistor of 22k and all works fine. Can I do the same change? regards Fraancesco Italy
Francesco,
 
See the following schematic http://www.sei= smicnet.com/onlinedocs/voltdrop.gif on=20 how to lower the input voltage to the Amp/Filter board.
 
-Larry Cochrane
Redwood City, PSN
----- Original Message -----
From:=20 Francesco
Sent: Wednesday, January 09, = 2002 4:13=20 AM
Subject: MARK SENSOR

Hi to all
from some weeks I'm using in my = station 3 Mark L4=20 sensors with Larry's ampli board.
The output signal is very high, and a = small=20 events also near me saturats the amplitude.
The gain is at min.
 
What I do to resolve this = problem?
 
In another station of our network, we = use the=20 Mauro Mariotti's ampli board with the input resistor of 22k and all = works=20 fine.
 
Can I do the same = change?
 
regards
 
Fraancesco    =20 Italy
Subject: Re[2]: MARK SENSOR From: "angel@......... angel@chiriqui.com Date: Wed, 9 Jan 2002 17:51:29 -0500 Hello Larry, Last year I took out one of the circuits off my L4 because by my calculations and the sec sheet and I think it significantly changes the damping. As I recall it drops it to .5 I think changing the resistor on the board is much better. I could be all wrong on that too! angel Wednesday, January 09, 2002, 5:39:46 PM, you wrote: LC> Francesco, LC> See the following schematic http://www.seismicnet.com/onlinedocs/voltdrop.gif on how to lower the input voltage to the Amp/ Filter board. LC> -Larry Cochrane LC> Redwood City, PSN LC> ----- Original Message ----- LC> From: Francesco LC> To: psn-l@.............. LC> Sent: Wednesday, January 09, 2002 4:13 AM LC> Subject: MARK SENSOR LC> Hi to all LC> from some weeks I'm using in my station 3 Mark L4 sensors with Larry's ampli board. LC> The output signal is very high, and a small events also near me saturats the amplitude. LC> The gain is at min. LC> What I do to resolve this problem? LC> In another station of our network, we use the Mauro Mariotti's ampli board with the input resistor of 22k and all works f ine. LC> Can I do the same change? LC> regards LC> Fraancesco Italy -- Best regards, angel mailto:angel@............ __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: Re[2]: MARK SENSOR From: "Larry Cochrane" cochrane@.............. Date: Wed, 9 Jan 2002 15:14:42 -0800 What's important is that the combined resistance be what ever the manufacture suggest is need for proper damping of the sensor. -Larry ----- Original Message ----- From: "angel@chiriqui" To: "Larry Cochrane" Sent: Wednesday, January 09, 2002 2:51 PM Subject: Re[2]: MARK SENSOR > Hello Larry, > > Last year I took out one of the circuits off my L4 because by my > calculations and the sec sheet and I think it significantly changes the > damping. As I recall it drops it to .5 > > I think changing the resistor on the board is much better. > > I could be all wrong on that too! > > angel > > Wednesday, January 09, 2002, 5:39:46 PM, you wrote: > > LC> Francesco, > > LC> See the following schematic http://www.seismicnet.com/onlinedocs/voltdrop.gif on how to lower the input voltage to the Amp/Filter board. > > LC> -Larry Cochrane > LC> Redwood City, PSN > LC> ----- Original Message ----- > LC> From: Francesco > LC> To: psn-l@.............. > LC> Sent: Wednesday, January 09, 2002 4:13 AM > LC> Subject: MARK SENSOR > > > LC> Hi to all > LC> from some weeks I'm using in my station 3 Mark L4 sensors with Larry's ampli board. > LC> The output signal is very high, and a small events also near me saturats the amplitude. > LC> The gain is at min. > > LC> What I do to resolve this problem? > > LC> In another station of our network, we use the Mauro Mariotti's ampli board with the input resistor of 22k and all works fine. > > LC> Can I do the same change? > > LC> regards > > LC> Fraancesco Italy > > > > -- > Best regards, > angel mailto:angel@............ > > __________________________________________________________ > > Public Seismic Network Mailing List (PSN-L) > > To leave this list email PSN-L-REQUEST@.............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. > __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Article on Capacitor Soakage From: Karl Cunningham karlc@.......... Date: Wed, 09 Jan 2002 17:01:56 -0800 Hi All -- I came across an article by Bob Pease on dielectric absorption, also known as soakage in capacitors. This is an important consideration to anyone building long-period analog filters and integrators. About halfway down the article is Figure 6, which is a schematic of a circuit that seems like a way to negate most of this effect with large capacitors such as electrolytics and mylar. http://www.national.com/rap/Application/0,1570,28,00.html Note that the article was written almost 20 years ago. Karl Cunningham __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: MARK SENSOR From: "Barry" gbl@....... Date: Wed, 9 Jan 2002 19:42:51 -0800 Francesco It appears that the circuit is simply a voltage divider. Regards Barry ----- Original Message -----=20 From: Larry Cochrane=20 To: psn-l@................. Sent: Wednesday, January 09, 2002 2:39 PM Subject: Re: MARK SENSOR Francesco, See the following schematic = http://www.seismicnet.com/onlinedocs/voltdrop.gif on how to lower the = input voltage to the Amp/Filter board. -Larry Cochrane Redwood City, PSN ----- Original Message -----=20 From: Francesco=20 To: psn-l@................. Sent: Wednesday, January 09, 2002 4:13 AM Subject: MARK SENSOR
Francesco
 It appears that the circuit is = simply a=20 voltage divider.
Regards
Barry
 
 
----- Original Message -----
From:=20 Larry=20 Cochrane
Sent: Wednesday, January 09, = 2002 2:39=20 PM
Subject: Re: MARK SENSOR

Francesco,
 
See the following schematic http://www.sei= smicnet.com/onlinedocs/voltdrop.gif on=20 how to lower the input voltage to the Amp/Filter board.
 
-Larry Cochrane
Redwood City, PSN
----- Original Message -----
From:=20 Francesco=20
Sent: Wednesday, January 09, = 2002 4:13=20 AM
Subject: MARK SENSOR

Subject: trouble shooting GPS antenna From: "angel@......... angel@chiriqui.com Date: Thu, 10 Jan 2002 08:26:46 -0500 Hello, Yesterday I got and SDR system up with one of the GPS systems we bought as a group. To lengthen the antenna I spliced in about 20 ft of RG174 into the little 5 foot cable of the antenna that came with the units. Hooked it all up and It worked well. Last night and today all got was and SDR error message stating "not enough GPS stat's being tracked". I replaced the antenna with one that I got from Synergy and had reserved for another installation and the problem disappeared. Any idea on how to test or trouble shoot this antenna??? Best regards, angel mailto:angel@............ __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: trouble shooting GPS antenna From: Rob Vassar rvassar@..................... Date: Thu, 10 Jan 2002 07:50:47 -0800 Angel, I can't seem to find my coax loss table at the moment, but I suspect your problem lies with the RG174. You're probably loosing 5db of signal in the cable alone. RG174 has very poor characteristics even in the low VHF bands. GPS is high UHF. Add to this the inevitable losses from the splices and various junctions between the antenna and the first amplifier/mixer, and you end up with a receiver that can only hear satellites that are directly overhead, where the signal is the strongest, or none at all. UHF/Microwave coax is hard to find, and expensive, but worth it. Good Luck, Rob "angel@chiriqui" wrote: > Hello, > > Yesterday I got and SDR system up with one of the GPS systems we > bought as a group. To lengthen the antenna I spliced in about 20 ft of RG174 into the > little 5 foot cable of the antenna that came with the units. Hooked > it all up and It worked well. > > Last night and today all got was and SDR error message stating "not > enough GPS stat's being tracked". > > I replaced the antenna with one that I got from Synergy and had > reserved for another installation and the problem disappeared. > > Any idea on how to test or trouble shoot this antenna??? > > Best regards, > angel mailto:angel@............ > __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: trouble shooting GPS antenna From: Hammonds hammond@........... Date: Thu, 10 Jan 2002 06:59:54 -0900 Angel, I remember something about not exceeding a certain cable length between the receiver and the antenna. Had to do with overall impedance, loss, and loading. What I did is keep the antenna cable length as it came from Synergy and move the receiver then wire in whatever length of RS-232 cable I needed to get to the PC. regards, Bob Hammond Alaska PSN At 06:50 AM 1/10/02, you wrote: >Angel, > > I can't seem to find my coax loss table at the moment, but I suspect > your problem lies >with the RG174. You're probably loosing 5db of signal in the cable >alone. RG174 has >very poor characteristics even in the low VHF bands. GPS is high >UHF. Add to this the >inevitable losses from the splices and various junctions between the >antenna and the >first amplifier/mixer, and you end up with a receiver that can only hear >satellites that >are directly overhead, where the signal is the strongest, or none at >all. UHF/Microwave >coax is hard to find, and expensive, but worth it. > >Good Luck, > >Rob > > >"angel@chiriqui" wrote: > > > Hello, > > > > Yesterday I got and SDR system up with one of the GPS systems we > > bought as a group. To lengthen the antenna I spliced in about 20 ft of > RG174 into the > > little 5 foot cable of the antenna that came with the units. Hooked > > it all up and It worked well. > > > > Last night and today all got was and SDR error message stating "not > > enough GPS stat's being tracked". > > > > I replaced the antenna with one that I got from Synergy and had > > reserved for another installation and the problem disappeared. > > > > Any idea on how to test or trouble shoot this antenna??? > > > > Best regards, > > angel mailto:angel@............ > > > >__________________________________________________________ > >Public Seismic Network Mailing List (PSN-L) > >To leave this list email PSN-L-REQUEST@.............. with >the body of the message (first line only): unsubscribe >See http://www.seismicnet.com/maillist.html for more information. __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: trouble shooting GPS antenna From: Karl Cunningham karlc@.......... Date: Thu, 10 Jan 2002 09:37:28 -0800 Hi Angel -- I extended my GPS antenna using RG-58 coax, splicing a piece of RG-58 in the middle of the RG-174. I used crimp-style BNC connectors on each end of the RG-58 (one male, one female). I used the same type of crimp connectors on the RG-174, soldering the center pin and building up the jacket on the RG-174 with shrink tubing so the crimp BNC would have something to grab on to. Right now there is about 40' of RG-58 and it seems to work just fine. Regards, Karl --On Thursday, January 10, 2002 8:26 AM -0500 "angel@chiriqui" wrote: > Hello, > > Yesterday I got and SDR system up with one of the GPS systems we > bought as a group. To lengthen the antenna I spliced in about 20 ft of > RG174 into the little 5 foot cable of the antenna that came with the > units. Hooked it all up and It worked well. > > Last night and today all got was and SDR error message stating "not > enough GPS stat's being tracked". > > I replaced the antenna with one that I got from Synergy and had > reserved for another installation and the problem disappeared. > > Any idea on how to test or trouble shoot this antenna??? > > Best regards, > angel mailto:angel@............ > > __________________________________________________________ > > Public Seismic Network Mailing List (PSN-L) > > To leave this list email PSN-L-REQUEST@.............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: trouble shooting GPS antenna From: Stephen & Kathy skmort@.......... Date: Thu, 10 Jan 2002 11:49:00 -0800 FYI,, according to my chart, RG174 has 19 db loss for every 100 feet,,, RG58 has 11 db loss per 100 feet, at 400 MHz. If you try to splice without connectors, the loss would be very great. We always assumed a loss of about 3 db even through a connector! According to info that I found on the web you should be able to extent the cable of an active antenna to approx. 30 meters, (that probably doesn't include connectors),, so 20 feet shouldn't be a problem. I couldn't see any loss of signal strength when I added, (with miniature connectors, bought at a surplus store, HSC, they are on the web), 33 feet of RG174 to my GPS antenna. The sat. that were reading about 35 before, read about 35 after and the sat. that read about 55 before were reading about 55 after I extended the cable!! I do drop to only 3 Sat on occasion, but then I am surrounded by hills and large oaks. BTW, working with miniature connectors is a lesson in patience, steady hands and delicate soldering!! By doing it my way I only added one more connection rather than two if you cut the short cable from the antenna. I did change the L shaped connector, on the antenna cable, to a straight connector to make it easier to waterproof! Good luck, Stephen psn station #55 near Pilot Hill Ca 38.828N 120.979W "angel@chiriqui" wrote: > Hello, > > Yesterday I got and SDR system up with one of the GPS systems we > bought as a group. To lengthen the antenna I spliced in about 20 ft of RG174 into the > little 5 foot cable of the antenna that came with the units. Hooked > it all up and It worked well. > > Last night and today all got was and SDR error message stating "not > enough GPS stat's being tracked". > > I replaced the antenna with one that I got from Synergy and had > reserved for another installation and the problem disappeared. > > Any idea on how to test or trouble shoot this antenna??? > > Best regards, > angel mailto:angel@............ __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: trouble shooting GPS antenna From: R&L_Thompson rlthompson@................. Date: Thu, 10 Jan 2002 16:42:45 -0330 RG58C coax cable has a loss of 66 db per 100 metres at 1GHz*, the GPS coarse acquisition signal is on roughly 1.3 GHz, so the losses are higher than that. You've added about 13 metres of cable, so you've added at least 9 db of loss in the cable alone. A good quality crimp connector will add additional losses, and to splice in the middle of the cable means you've added 4 connectors. I wouldn't venture to guess what the losses are with the connectors done the way you've described them. The cable extension used good quality materials and practices has added not less than 10 db of loss. Using the method you've described here, I wouldn't venture a guess at the losses, but undoubtedly they are much higher than 10 db. Ron Thompson ( I teach avionics ) * Reference: - This figure comes from my copy of the ARRL UHF/Microwave Experimenters Manual, Chapter 5-16, Table 2. An alternative cable, although much larger in diameter, would be Belden 9913 with a loss of only 15 db per 100 metres, and it should be used with good quality adapters / connectors. Karl Cunningham wrote: > Hi Angel -- > > I extended my GPS antenna using RG-58 coax, splicing a piece of RG-58 in > the middle of the RG-174. I used crimp-style BNC connectors on each end of > the RG-58 (one male, one female). I used the same type of crimp connectors > on the RG-174, soldering the center pin and building up the jacket on the > RG-174 with shrink tubing so the crimp BNC would have something to grab on > to. > > Right now there is about 40' of RG-58 and it seems to work just fine. > > Regards, > Karl > > --On Thursday, January 10, 2002 8:26 AM -0500 "angel@chiriqui" > wrote: > > > Hello, > > > > Yesterday I got and SDR system up with one of the GPS systems we > > bought as a group. To lengthen the antenna I spliced in about 20 ft of > > RG174 into the little 5 foot cable of the antenna that came with the > > units. Hooked it all up and It worked well. > > > > Last night and today all got was and SDR error message stating "not > > enough GPS stat's being tracked". > > > > I replaced the antenna with one that I got from Synergy and had > > reserved for another installation and the problem disappeared. > > > > Any idea on how to test or trouble shoot this antenna??? > > > > Best regards, > > angel mailto:angel@............ > > > > __________________________________________________________ > > > > Public Seismic Network Mailing List (PSN-L) > > > > To leave this list email PSN-L-REQUEST@.............. with > > the body of the message (first line only): unsubscribe > > See http://www.seismicnet.com/maillist.html for more information. > > __________________________________________________________ > > Public Seismic Network Mailing List (PSN-L) > > To leave this list email PSN-L-REQUEST@.............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: trouble shooting GPS antenna From: twleiper@........ Date: Thu, 10 Jan 2002 16:21:58 -0500 On Thu, 10 Jan 2002 16:42:45 -0330 R&L_Thompson writes: > RG58C coax cable has a loss of 66 db per 100 metres at 1GHz* I've got a couple rolls of 1" Heliax that would love to handle that stuff... Tom __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: trouble shooting GPS antenna From: R&L_Thompson rlthompson@................. Date: Thu, 10 Jan 2002 18:03:52 -0330 I'm trying to imagine using Heliax with an SMA or SMB connector on it, attached to a GPS antenna. Ron twleiper@........ wrote: > On Thu, 10 Jan 2002 16:42:45 -0330 R&L_Thompson > writes: > > RG58C coax cable has a loss of 66 db per 100 metres at 1GHz* > > I've got a couple rolls of 1" Heliax that would love to handle > that stuff... > > Tom > __________________________________________________________ > > Public Seismic Network Mailing List (PSN-L) > > To leave this list email PSN-L-REQUEST@.............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re[2]: trouble shooting GPS antenna From: "angel@......... angel@chiriqui.com Date: Thu, 10 Jan 2002 17:44:22 -0500 Hello Everyone, Well all I have to say is that splices were VERY PRETTY and VERY NEAT, heat shrink and the whole bit!! I should have pick up at least a few db for neatness. :-) I had my little doubts while I was making up the cable but when I hooked it up and it worked, well what could I say!! The satellites were aligned just right. I will use some fatter stuff but maybe not heliax. Thank to everyone! Warmly, angel __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: trouble shooting GPS antenna From: twleiper@........ Date: Thu, 10 Jan 2002 18:12:30 -0500 On Thu, 10 Jan 2002 18:03:52 -0330 R&L_Thompson writes: > I'm trying to imagine using Heliax with an SMA or SMB connector on > it, > attached to a GPS antenna. You'll need a good pair of funnels, or a couple of "N" to "SMA" adapters (or all that falls between). Tom __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: trouble shooting GPS antenna From: R&L_Thompson rlthompson@................. Date: Thu, 10 Jan 2002 21:41:56 -0330 One last suggestion. It might not make much of a difference, but when using solder type connectors at frequencies this high, use a solder with a 2% silver content. Radio shack used to have it available in small quantities. Good luck with the project! Ron twleiper@........ wrote: > On Thu, 10 Jan 2002 18:03:52 -0330 R&L_Thompson > writes: > > I'm trying to imagine using Heliax with an SMA or SMB connector on > > it, > > attached to a GPS antenna. > > You'll need a good pair of funnels, or a couple of "N" to "SMA" > adapters (or all that falls between). > > Tom > __________________________________________________________ > > Public Seismic Network Mailing List (PSN-L) > > To leave this list email PSN-L-REQUEST@.............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Chart recording paper From: "Kareem, JooJoo" temp@............. Date: Thu, 10 Jan 2002 20:20:23 -0800 Does anyone know where one can find tap into an inexpensive supply of chart paper for a seismic recording system? System: PS2 Kinemetrics Paper is 24"x13" Kareem Message
Does = anyone know=20 where one can find tap into an inexpensive supply of chart paper for a = seismic=20 recording system?
System:
PS2 = Kinemetrics=20
Paper = is=20 24"x13"
 
Kareem
Subject: Re: Chart recording paper From: twleiper@........ Date: Thu, 10 Jan 2002 23:30:39 -0500 Go to a restaurant supply company and get a roll of "deli paper". You can get it in 24" wide rolls, and you can even get a neat little stand that has a spring action tear-off blade to hold it. I use this stuff for the kids art work (and my doodles)...it's cheap, takes ink well and lasts forever. Tom On Thu, 10 Jan 2002 20:20:23 -0800 "Kareem, JooJoo" writes: Does anyone know where one can find tap into an inexpensive supply of chart paper for a seismic recording system? System: PS2 Kinemetrics Paper is 24"x13" Kareem Message
Go to a restaurant supply company and get a roll of "deli paper". You<= /DIV>
can get it in 24" wide rolls, and you can even get a neat little stand= =20 that
has a spring action tear-off blade to hold it. I use this stuff for = the=20 kids
art work (and my doodles)...it's cheap, takes ink well and lasts=20 forever.
 
Tom
 
On Thu, 10 Jan 2002 20:20:23 -0800 "Kareem, JooJoo" <temp@.............> writes:
Does = anyone know=20 where one can find tap into an inexpensive supply of chart paper for a = seismic=20 recording system?
System:
PS2 = Kinemetrics=20
Paper = is=20 24"x13"
 
Kareem
 
Subject: Re: Chart recording paper From: "Raul J. Alvarez" ralvarez@........ Date: Thu, 10 Jan 2002 21:31:38 -0700 Hi Kareen, The only suggestion I can think of at this time is to use plotter paper ( I forget the letter size) but it is available in 18 x 24 inch. You would have to cut it to fit in width. Perhaps you could find a print shop that has a large paper cutter that can cut a full ream at a time. Raul Alvarez www.LaEstrellitaObservatory.org "Kareem, JooJoo" wrote: > Does anyone know where one can find tap into an inexpensive supply of > chart paper for a seismic recording system?System:PS2 > Kinemetrics Paper is 24"x13" Kareem Hi Kareen,

The only suggestion I can think of at this time is to use plotter paper ( I forget the letter size) but it is available in 18 x 24 inch.  You would have to cut it to fit in width. Perhaps you could find a print shop that has a large paper cutter that can cut a full ream at a time.

Raul Alvarez
www.LaEstrellitaObservatory.org

"Kareem, JooJoo" wrote:

 Does anyone know where one can find tap into an inexpensive supply of chart paper for a seismic recording system?System:PS2 Kinemetrics Paper is 24"x13" Kareem
Subject: Fw: Space Survey Yields New Info On California's Landscape, Quakes From: "Larry Cochrane" cochrane@.............. Date: Fri, 11 Jan 2002 00:28:03 -0800 Saw this in the sci.geo.geology newsgroup. -Larry ----- Original Message ----- From: "Ron Baalke" Newsgroups: sci.geo.geology Sent: Thursday, January 10, 2002 9:57 PM Subject: Space Survey Yields New Info On California's Landscape, Quakes > > MEDIA RELATIONS OFFICE > JET PROPULSION LABORATORY > CALIFORNIA INSTITUTE OF TECHNOLOGY > NATIONAL AERONAUTICS AND SPACE ADMINISTRATION > PASADENA, CALIFORNIA 91109. TELEPHONE (818) 354-5011 > http://www.jpl.nasa.gov > > Contact: Alan Buis (818) 354-0474 January 10, 2002 > > > SPACE SURVEY YIELDS NEW INFO ON CALIFORNIA'S LANDSCAPE, QUAKES > > A space-based survey by a research team from NASA's Jet > Propulsion Laboratory, Pasadena, Calif., and Rice University, > Houston, Texas, offers new insights into the history of > central California's varied topography and the region's > earthquake hazards. > > Using several years of data from precise space-based > surveying methods such as the Global Positioning System, > researchers Dr. Donald Argus of JPL and Dr. Richard Gordon of > Rice University found a strong correlation between the degree > to which the Pacific tectonic plate and its adjacent Sierran > microplate push against one another (converge) or pull apart > from one another (diverge) and the height, extent and age of > California's coastal mountains. Their results were published > recently in the Geological Society of America Bulletin and > were featured as a recent "Editor's Choice" in Science. > > "This precise positioning data is allowing us to better > understand why central California's coastal mountains are > where they are and where they're growing," Argus said. > > Much of coastal California rides on the Pacific plate, > while the Sierran plate serves as a buffer zone of sorts for > the North American plate, which carries the rest of the > continental United States. > > North of the 'big bend' in the San Andreas fault, the > relative motion of the Pacific and Sierran plates in central > California nearly parallels the San Andreas and related > faults. In most places, the plates are converging at rates up > to 3.3 millimeters (.13 inches) per year, horizontally > shortening Earth's crust across the fault and raising > California's coastal mountains. > > "We found the greater the rate of convergence, the larger > the size and extent of the mountains," said Argus. > > The affected mountains include the Temblor and Diablo > Ranges, those on the west flank of the Sacramento-San Joaquin > Valley, others near the San Andreas fault system and those > strictly near the coast. These ranges block drainage of the > watershed comprising the Sierra Nevada and great central > valley of California into the Pacific Ocean. > > In contrast, he and Gordon found that just north of San > Francisco, the Pacific and Sierran plates are slowly pulling > apart at a rate of 2.6 millimeters (.1 inches) per year, > opening a hole manifested as a topographic low in San Pablo > Bay. Here, rivers originating in the Sierra Nevada mountains > drain through the coastal mountains on their way to passage > under the Golden Gate Bridge and out into the Pacific. > > Argus and Gordon's study also addresses overall > earthquake hazards in the region. They calculated the lateral > rate of motion between the Pacific and Sierran plates at > approximately 39 millimeters (about 1.5 inches) per year. > This rate differs significantly from a previous estimate of 34 > millimeters (about 1.3 inches) per year obtained by measuring > and dating creek displacements across the San Andreas fault. > The scientists attributed this difference to inelastic > deformation, slip along other faults or both. These > observations limit the total amount of strain that may be > released in earthquakes along the fault system, Argus said. > > The researchers also found a general relationship between > the degree of convergence and the degree of stable sliding > along the San Andreas and other northwest-striking strike-slip > faults in central California. Where convergence rates are low > or negative, sliding tends to be stable, manifesting itself as > steady "creep" or small to moderate earthquakes; where > convergence rates are high, the faults tend to be unstable, > resulting in great earthquakes such as the 1906 San Francisco > quake. In most cases, the stable fault sections move parallel > to the direction of relative plate motion. > > Argus and Gordon found prominent exceptions to this rule, > however, that make their hypothesis at best a partial > explanation for the observed distribution of locked and > nonlocked fault sections. They speculate that other unknown > factors are at work in these areas. > > Based upon present rates of fault convergence and > neglecting the effects of erosion, the two calculated the age > of California's coastal ranges to be at least 3 to 6 million > years, with the Diablo Range estimated at approximately 10 > million years old. Most previous age estimates range from 1 > to 3 million years. > > This research was funded as part of NASA's Earth Science > Enterprise, a long-term research effort dedicated to > understanding how human-induced and natural changes affect our > global environment. > > JPL is a division of the California Institute of > Technology in Pasadena. > > ##### > __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: Chart recording paper From: ChrisAtUpw@....... Date: Fri, 11 Jan 2002 07:07:36 EST In a message dated 11/01/2002, twleiper@........ writes: > Go to a restaurant supply company and get a roll of "deli paper". You > can get it in 24" wide rolls, and you can even get a neat little stand that > has a spring action tear-off blade to hold it. I use this stuff for the kids > art work (and my doodles)...it's cheap, takes ink well and lasts forever. > Tom > > On Thu, 10 Jan 2002 "Kareem, JooJoo" <temp@.............> writes: > >> Does anyone know where one can find tap into an inexpensive supply of >> chart paper for a seismic recording system? >> System: PS2 Kinemetrics Paper is 24"x13" >> Hi Kareem, I suggest that you also check on the available sizes of 'fan fold' paper for printers and rolled paper for printers. At the Uni., we found that you could buy large rolls of 'cut to width' blank paper quite cheaply. We then unrolled this, passed it through a punch machine to make drive holes and rolled it onto suitable coils for chart recorders. We then photocopied genuine chart paper onto a clear sheet and used this as an overlay to read the charts.... Regards, Chris Chapman In a message dated 11/01/2002, twleiper@........ writes:

Go to a restaurant supply company and get a roll of "deli paper". You
can get it in 24" wide rolls, and you can even get a neat little stand that
has a spring action tear-off blade to hold it. I use this stuff for the kids
art work (and my doodles)...it's cheap, takes ink well and lasts forever.
Tom

On Thu, 10 Jan 2002 "Kareem, JooJoo" <temp@.............> writes:
Does a nyone know where one can find tap into an inexpensive supply of chart paper for a seismic recording system?
System: PS2 Kinemetrics Paper is 24"x13"
Kareem
Hi Kareem,
      I suggest that you also check on the available sizes of 'fan fold' paper for printers and rolled paper for printers. At the Uni., we found that you could buy large rolls of 'cut to width' blank paper quite cheaply .  We then unrolled this, passed it through a punch machine to make drive holes and rolled it onto suitable coils for char t recorders. We then photocopied genuine chart paper onto a clear  sheet and used this as  an overlay to read the cha rts....

      Regards,

      Chris Chapman
Subject: Re: Fw: Space Survey Yields New Info On California's Landscape, Quakes From: Jim ODonnell jimo17@........ Date: Fri, 11 Jan 2002 08:14:53 -0800 Hi Larry- Glad you posted this- It is quite pertinent! NASA is finally getting their head out of the clouds and looking down instead of up... BTW, the check went out in yesterday's mail for the new A/D board...Jim ________________________________________________________________ GET INTERNET ACCESS FROM JUNO! Juno offers FREE or PREMIUM Internet access for less! Join Juno today! For your FREE software, visit: http://dl.www.juno.com/get/web/. __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: Article on Capacitor Soakage From: ChrisAtUpw@....... Date: Fri, 11 Jan 2002 13:32:03 EST In a message dated 10/01/2002, karlc@.......... writes: > I came across an article by Bob Pease on dielectric absorption, also known > as soakage in capacitors. This is an important consideration to anyone > building long-period analog filters and integrators. > > http://www.national.com/rap/Application/0,1570,28,00.html Dear Karl, Thanks for this very interesting and usefull reference. Regards, Chris Chapman In a message dated 10/01/2002, karlc@.......... writes:

I came across an article by Bob Pease on dielectric absorption, also known
as soakage in capacitors.  This is an important consideration to anyone
building long-period analog filters and integrators.

http://www.national.com/rap/Application/0,1570,28,00.html
Dear Karl,

      Thanks for this very interesting and usefull reference.

      Regards,

      Chris Chapman Subject: Re: web site question From: The Lahrs johnjan@........ Date: Fri, 11 Jan 2002 21:54:51 -0700 I think that the FAQ page on Larry's site should be updated. See: http://www.seismicnet.com/info/homefaq.txt In particular it states, in part, No one seems to know if the Lehman(n) sensor is named after the author, James D. Lehman, or the famed Danish seismologist, Inge Lehmann, who published a paper in 1936, that postulated that the earth held an inner core estimated to be about the size of our moon within the outer core. If someone has some information on this please forward it to me so I can include it in the next update of the FAQ. Ken Navarre We now know that the Lehman is named for James D. Lehman. I asked Larry about this and he doesn't have time to keep the FAQ up to date. Ken, do you want to take a crack at it again? Someone else? Larry's site has a lot of information on Lehman and other instruments, so perhaps the FAQ page isn't necessary. He has the original Amateur Scientist article of July 1979: http://www.seismicnet.com/lehman.html, links to other sites that have design modifications, etc. John * John C. and Jan H. Lahr * JohnJan@........ * 1925 Foothills Road * Golden, Colorado 80401-1718 * Phone: (303) 215-9913 * http://lahr.org/john--jan/science.html __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Great Seismometer on ebay From: BOB BARNS royb1@........... Date: Sat, 12 Jan 2002 09:41:32 -0500 Hi gang, ebay (www.ebay.com) auction #1689371912 which ends 1/21/02 looks like a powerful instrument. It is a Geotech BB13. specs. and good pics are given, e.g., DC to 20 Hz. Bob __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: Great Seismometer on ebay From: R&L_Thompson rlthompson@................. Date: Sat, 12 Jan 2002 12:18:28 -0330 The last two digits of the item number appear to have been transposed, try item number 1689371921 or http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?MfcISAPICommand=ViewItem&item=1689371921 Ron (in Gander, NF) BOB BARNS wrote: > Hi gang, > ebay (www.ebay.com) auction #1689371912 which ends 1/21/02 looks like > a powerful instrument. It is a Geotech BB13. > specs. and good pics are given, e.g., DC to 20 Hz. > Bob > __________________________________________________________ > > Public Seismic Network Mailing List (PSN-L) > > To leave this list email PSN-L-REQUEST@.............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: Great Seismometer on ebay From: ChrisAtUpw@....... Date: Sat, 12 Jan 2002 11:11:06 EST In a message dated 12/01/2002, royb1@........... writes: > Hi gang, > ebay (www.ebay.com) auction #1689371912 which ends 1/21/02 looks like > a powerful instrument. It is a Geotech BB13. For #number please use #1689371921. Reserve seems to be $199, but watch the weight for delivery costs! Chris Chapman In a message dated 12/01/2002, royb1@........... writes:

Hi gan g,
 ebay (www.ebay.com) auction #1689371912 which ends 1/21/02 looks like
a powerful instrument.  It is a Geotech BB13.
      For #number please use #1689371921. Reserve seems to be $199, but watch the weight for delivery costs!

      Chris Chapman Subject: Time correction program From: "Dewayne Hill" n0ssy@......... Date: Sat, 12 Jan 2002 16:50:47 -0700 I just found a program that will keep the clock in your PC set to the = correct time. This is a 30 day evaluation program with a $10 registration fee. http://www.atomtime.com/
I just found a program that will keep = the clock in=20 your PC set to the correct time.
 
This is a 30 day evaluation program = with a $10=20 registration fee.
 
http://www.atomtime.com/ Subject: Re: Time correction program From: "angel@......... angel@chiriqui.com Date: Sat, 12 Jan 2002 20:04:25 -0500 Hello Dewayne, There are several of these that are free and very good, check out Dimension 4 and if you really want accuracy check out Rightime. angel Saturday, January 12, 2002, 6:50:47 PM, you wrote: DH> I just found a program that will keep the clock in your PC set to the correct time. DH> This is a 30 day evaluation program with a $10 registration fee. DH> http://www.atomtime.com/ -- Best regards, angel mailto:angel@............ __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Changing email addresses. From: "Larry Cochrane" cochrane@.............. Date: Sat, 12 Jan 2002 21:19:22 -0800 All, This is a reminder that you can change your email address on the PSN-L list, as well as the other lists I maintain on my system, by using this web page http://www.seismicnet.com/maillist.html. To change your email address first enter your old address in the web page form and select unsubscribe. Next enter your new email address and select subscribe. When subscribing you can select either the immediate or digest mode. With the digest mode you will only receive one email message per day from my list server. Assuming someone posts a message that day.... Thanks, Larry Cochrane Redwood City, PSN __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: Time correction program From: "Jan D. Marshall" jandmarshall@............ Date: Sat, 12 Jan 2002 22:21:10 -0700 I have used this free one for several years -- It is excellent http://sourceforge.net/project/showfiles.php?group_id=3D10109 Jan D. Marshall WB7COX Nampa, Idaho jandmarshall@............ www.cableone.net/jandmarshall ----- Original Message -----=20 From: Dewayne Hill=20 To: PSN NET=20 Sent: Saturday, January 12, 2002 4:50 PM Subject: Time correction program I just found a program that will keep the clock in your PC set to the = correct time. This is a 30 day evaluation program with a $10 registration fee. http://www.atomtime.com/
I have used this free one for several = years -- It=20 is excellent
ht= tp://sourceforge.net/project/showfiles.php?group_id=3D10109
 
Jan D. Marshall
WB7COX
Nampa, Idaho
jandmarshall@............www.cableone.net/jandmarsha= ll
----- Original Message -----
From:=20 Dewayne = Hill
To: PSN NET
Sent: Saturday, January 12, = 2002 4:50=20 PM
Subject: Time correction = program

I just found a program that will keep = the clock=20 in your PC set to the correct time.
 
This is a 30 day evaluation program = with a $10=20 registration fee.
 
http://www.atomtime.com/ Subject: Re: Time correction program From: "Larry Cochrane" cochrane@.............. Date: Sun, 13 Jan 2002 01:06:03 -0800 There's also a free port of NTP (Network Time Protocol) for NT and Win2k. Not sure if it will work under the other Windows OSs. See this page http://www.five-ten-sg.com/ for download links. Recently I have been using it to test a new feature in WinSDR. This feature allows my new Serial Output A/D board (or the DOS program SDRServr.exe) to use the computer it is sending data too as a time reference source. I can check the accuracy of NTP running on my Win2K system (933Mhz PIII system with 256K of memory) and GPS time with an oscilloscope. One channel of the o-scope is connected to the 1 PPS output of the GPS receiver and the other channel of the o-scope is connected up to the 1 PPS output of the A/D board (pin 12 on the serial A/D board and pin 18 on the ISA A/D board). I was very pleased with the results of my testing. NTP was able to keep my A/D board time accurate to within +-10 milliseconds. Too get this type of accuracy you need a high speed connection to the Internet and you need to find a NTP server near you. -Larry Cochrane Redwood City, PSN ----- Original Message ----- From: "angel@chiriqui" To: "Dewayne Hill" Sent: Saturday, January 12, 2002 5:04 PM Subject: Re: Time correction program > Hello Dewayne, > > There are several of these that are free and very good, check out > Dimension 4 and if you really want accuracy check out Rightime. > > angel > > Saturday, January 12, 2002, 6:50:47 PM, you wrote: > > DH> I just found a program that will keep the clock in your PC set to the correct time. > > DH> This is a 30 day evaluation program with a $10 registration fee. > > DH> http://www.atomtime.com/ > > > > -- > Best regards, > angel mailto:angel@............ > > __________________________________________________________ > > Public Seismic Network Mailing List (PSN-L) > > To leave this list email PSN-L-REQUEST@.............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. > __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: unusual Jan 12 quake near Bermuda? From: "David Saum" DSaum@............ Date: Mon, 14 Jan 2002 14:16:28 -0500 While testing a 4.5 Hz geophone system near Washington, DC on January 12, I seem to have picked up a good signal from a quake near Bermuda (about 800 miles away) http://wwwneic.cr.usgs.gov/neis/bulletin/020112082652.html Here is the WinQuake data file and plot http://www.infiltec.com/seismo/020112a.gif http://www.infiltec.com/seismo/020112a.set Note that my time base was fast by about 290 seconds. Here is a WinQuake map that incorporates my data and PSN data from sites in NJ and Alabama. http://www.infiltec.com/seismo/020112_map.gif A couple of questions: 1. Is it unusual for a signal from a quake 800 miles away to have so much high frequency energy? 2. Am I setting up the S and P markers correctly? My quake location seems a lot further off than the PSN data sets from NY and AL. I am a WinQuake novice. I have put up a new web page on my simplified electronics board for a short period system: http://www.infiltec.com/seismo/inf-qm45.htm ....Dave Saum __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: unusual Jan 12 quake near Bermuda? From: The Lahrs johnjan@........ Date: Mon, 14 Jan 2002 20:56:05 -0700 David, I'm very impressed by you system! You've got a good recording of the Bermuda event. Have you done an FFT in WinQuake to see what the predominate frequence of your signal is? I really like your idea of making an inexpensive system, as cost is a major limitation for most teachers. Are you going to make a long period version as well? Maybe you should check out Meredith's levitated-graphite design as an alternative to a large Lehman-style swinging-gate sensor. What is involved and how difficult is it to program the PIC14000 computer? Are you planning on providing do-it-yourself instructions for your electronics? Cheers, John At 12:16 PM 1/14/2002 , you wrote: >While testing a 4.5 Hz geophone system near >Washington, DC on January 12, I seem >to have picked up a good signal from a >quake near Bermuda (about 800 miles away) >http://wwwneic.cr.usgs.gov/neis/bulletin/020112082652.html > >Here is the WinQuake data file and plot >http://www.infiltec.com/seismo/020112a.gif >http://www.infiltec.com/seismo/020112a.set > >Note that my time base was fast by about 290 seconds. > >Here is a WinQuake map that incorporates >my data and PSN data from sites in NJ and >Alabama. >http://www.infiltec.com/seismo/020112_map.gif > >A couple of questions: > >1. Is it unusual for a signal from a quake 800 miles >away to have so much high frequency energy? > >2. Am I setting up the S and P markers correctly? >My quake location seems a lot further off than >the PSN data sets from NY and AL. I am a >WinQuake novice. > >I have put up a new web page on my simplified >electronics board for a short period system: >http://www.infiltec.com/seismo/inf-qm45.htm > >...Dave Saum > >__________________________________________________________ > >Public Seismic Network Mailing List (PSN-L) > >To leave this list email PSN-L-REQUEST@.............. with >the body of the message (first line only): unsubscribe >See http://www.seismicnet.com/maillist.html for more information. John C. Lahr 1925 Foothills Road Golden, CO 80402 Phone: (303) 215-9913 john@........ http://lahr.org/john-jan/science.html __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Can't connect to PSN web page From: RLLaney@....... Date: Tue, 15 Jan 2002 13:35:55 EST I have been unable to connect to the PSN web page for the past 3 days. Is the system down, or is anyone else having a similar problem? Thanks. Bob Laney Herndon, VA __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: Can't connect to PSN web page From: "Larry Cochrane" cochrane@.............. Date: Tue, 15 Jan 2002 14:02:52 -0800 Bob and Others, At first I thought the PSN.QUAKE.NET domain name finally went away. This was my old domain name when I first got onto the Net. QuakeNet is now out of business but still has a DNS server up and running with the PSN.QUAKE.NET domain pointing to one of my DNS lines. I know that someday this domain name will go away since I have no control over it. I thought that that time has finally happened.....but after doing some more checking, it turn out that my PacHell DSL line was down. This is my backup DSL line so I don't monitor it very often. After doing some more checking I found a loose wire outside in the phone line junction box attached to the house. Reconnecting the wire fixed the problem so everything should be back to normal. Thank God, I didn't want to spend the next 3 hours on hold waiting for someone at PacHell too talk to. If the PSN.QUAKE.NET domain name stops working just start using WWW.SEISMICNET.COM. -Larry Cochrane Redwood City, PSN ----- Original Message ----- From: To: Sent: Tuesday, January 15, 2002 10:35 AM Subject: Can't connect to PSN web page > I have been unable to connect to the PSN web page for the past 3 days. Is > the system down, or is anyone else having a similar problem? > > Thanks. > > Bob Laney > Herndon, VA > __________________________________________________________ > > Public Seismic Network Mailing List (PSN-L) > > To leave this list email PSN-L-REQUEST@.............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. > __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: unusual Jan 12 quake near Bermuda? From: "David Saum" DSaum@............ Date: Wed, 16 Jan 2002 15:58:01 -0500 > Subject: Re: unusual Jan 12 quake near Bermuda? > From: The Lahrs > Date: Mon, 14 Jan 2002 20:56:05 -0700 > > David, > > I'm very impressed by your system! You've got a good recording > of the Bermuda event. Thanks, but I think a quirk of nature had a lot to do with it. Here is some long and short period data from LCSN-PAL in NY: http://www.infiltec.com/seismo/020112pl.gif long period data image http://www.infiltec.com/seismo/020112ps.gif short period data image This quake delivered a lot of seismic energy at high frequencies to the east coast of the US. >Have you done an FFT in WinQuake to > see what the predominate frequency of your signal is? Yes, I often use the WinQuake FFT for debugging my hardware Here is the quake FFT and the data file http://www.infiltec.com/seismo/020112a.gif quake data image http://www.infiltec.com/seismo/020112af.gif quake fft image http://www.infiltec.com/seismo/020112a.set quake data And here is typical background noise FFT and data file http://www.infiltec.com/seismo/020112n.gif noise data image http://www.infiltec.com/seismo/020112nf.gif noise fft image http://www.infiltec.com/seismo/020112n.set quake data The low pass 8 pole bessel filter chip allows me to reduce the sampling rate to about 4.5x the low pass cutoff and still not get much aliasing. > I really like your idea of making an inexpensive system, as > cost is a major limitation for most teachers. Are you going > to make a long period version as well? Yes, the same board works for my long period Lehman. All I have to do is change some a couple of capacitors and resistors to reconfigure it for 1 Hz or any other low pass, plus similar changes for the sensor (coil) characteristics. The microprocessor is programmed so that is can be switched between several sampling rates between 5 to 23.7 SPS. Here is the noise spectra from my Lehman system using a 1 Hz lowpass http://www.infiltec.com/seismo/010129f.gif noise fft image http://www.infiltec.com/seismo/010129n.gif noise data image And here are some teleseismic events http://www.infiltec.com/seismo/010113a.gif 8m quake image http://www.infiltec.com/seismo/010126a.gif ? quake image but I have erased the .SET files, so no FFT. My Lehman has been down for repairs for a few months so I do not have any current data from it. > Maybe you should check > out Meredith's levitated-graphite design as an alternative to > a large Lehman-style swinging-gate sensor. > > What is involved and how difficult is it to program the PIC14000 > computer? I program them in PicBasic Pro with a $400 system from www.mplabs.com. You can take a course on programming them in C from www.phanderson.com The PIC14000 is a little trickier than some of the other PICs that have onboard A/D, but it is the only one with 16 bits. I have more microprocessor resources on my web page http://www.infiltec.com/seismo/#micro > Are you planning on providing do-it-yourself instructions > for your electronics? That is the plan. All I need is some extra time... Ciao, Dave Saum ----- Original Message ----- From: To: Sent: Wednesday, January 16, 2002 3:01 AM Subject: Digest from 01/15/2002 00:01:41 > > .------ ------ ------ ------ ------ ------ ------ ------ ------ ------. > | Message 1 | > '------ ------ ------ ------ ------ ------ ------ ------ ------ ------' > Subject: Can't connect to PSN web page > From: RLLaney@....... > Date: Tue, 15 Jan 2002 13:35:55 EST > > I have been unable to connect to the PSN web page for the past 3 days. Is > the system down, or is anyone else having a similar problem? > > Thanks. > > Bob Laney > Herndon, VA > > > .------ ------ ------ ------ ------ ------ ------ ------ ------ ------. > | Message 2 | > '------ ------ ------ ------ ------ ------ ------ ------ ------ ------' > Subject: Re: Can't connect to PSN web page > From: "Larry Cochrane" > Date: Tue, 15 Jan 2002 14:02:52 -0800 > > Bob and Others, > > At first I thought the PSN.QUAKE.NET domain name finally went away. This was > my old domain name when I first got onto the Net. QuakeNet is now out of > business but still has a DNS server up and running with the PSN.QUAKE.NET > domain pointing to one of my DNS lines. I know that someday this domain name > will go away since I have no control over it. I thought that that time has > finally happened.....but after doing some more checking, it turn out that my > PacHell DSL line was down. This is my backup DSL line so I don't monitor it > very often. After doing some more checking I found a loose wire outside in > the phone line junction box attached to the house. Reconnecting the wire > fixed the problem so everything should be back to normal. Thank God, I > didn't want to spend the next 3 hours on hold waiting for someone at PacHell > too talk to. > > If the PSN.QUAKE.NET domain name stops working just start using > WWW.SEISMICNET.COM. > > -Larry Cochrane > Redwood City, PSN > > ----- Original Message ----- > From: > To: > Sent: Tuesday, January 15, 2002 10:35 AM > Subject: Can't connect to PSN web page > > > > I have been unable to connect to the PSN web page for the past 3 days. Is > > the system down, or is anyone else having a similar problem? > > > > Thanks. > > > > Bob Laney > > Herndon, VA > > __________________________________________________________ > > > > Public Seismic Network Mailing List (PSN-L) > > > > To leave this list email PSN-L-REQUEST@.............. with > > the body of the message (first line only): unsubscribe > > See http://www.seismicnet.com/maillist.html for more information. > > > > > > > __________________________________________________________ > > Public Seismic Network Mailing List (PSN-L) > > To leave this list email PSN-L-DIGEST-REQUEST@.............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. > __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: unusual Jan 12 quake near Bermuda? From: RLLaney@....... Date: Thu, 17 Jan 2002 11:36:08 EST In a message dated 1/16/02 3:59:45 PM Eastern Standard Time, DSaum@............ writes: << This quake delivered a lot of seismic energy at high frequencies to the east coast of the US. >> Dave: Just a comment on the high frequencies. I don't think it is that unusual to have the energy in the higher frequencies. I looked at some of the events I have collected over the past few years in the general distance range of the one near Bermuda and most have most of the energy above 1 hertz or so. The one from the Virgin Islands on January 15, 2002 at 09:13:14 UTC is a good example. Regards, Bob __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: trouble shooting GPS antenna From: MPeffer@....... Date: Sat, 19 Jan 2002 15:27:45 EST unsubscribe __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: volcano in congo From: "JooJoo \(Kareem\)" temp@............. Date: Sat, 19 Jan 2002 14:03:22 -0800 Anyone know of any links to the Volcano in Congo - live cams... Byeeeeee... Kareem J. Lanier Message
Anyone = know of any=20 links to the Volcano in Congo - live cams...
 
 
Byeeeeee...
Kareem = J.=20 Lanier
 
Subject: Volcano in Rwanda From: David Findlay david_j_findlay@............ Date: Mon, 21 Jan 2002 08:48:43 +1000 Has anyone got any traces for the volcanic eruption in Rwanda? How far away has it been detected? Thanks, David __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: New WinQuake and Current Seismicity Images From: "Larry Cochrane" cochrane@.............. Date: Sun, 20 Jan 2002 17:43:13 -0800 Hi all, I have two new things to report.... WinQuake- I released a new version of WinQuake. You can download it from here http://www.seismicnet.com/software.html. The release number is 2.8.6 with a release date of 01/19/2002. This release fixes a problem I and others have notices regarding some of the USGS network reports not loading correctly. It turns out that they changed servers and the new servers require a HTTP 1.1 Get command. WinQuake was issuing a HTTP 1.0 Get command. It took awhile to figure out that one.... I found some code on the net that can change the printing mode to landscape. This code is now part of WinQuake. The Print Margins Settings dialog box has been changed to Printer Setting. In this dialog box you can set the print margins and set the color or b/w and landscape or portrait modes. Also new is support for my new WinSDR program. This feature allows WinSDR to open an event file or display a directory listing after doing a replay. I created two setup programs for WinQuake. One is the full release. The setup file winqk286.exe should be downloaded if you are installing WinQuake for the first time. The file winqk286exeonly.exe can be downloaded if you already have WinQuake installed on your system. If you use the exe only file make sure you select the same directory or folder containing your current copy of WinQuake. Seimicity Images- You may have noticed a new feature on my main web page (www.seismicnet.com). I now display a near real-time GIF image of local seismicity. The image on the main page is the N-S channel of the strong motion FBA-23 sensor I am monitoring (channel LCNH). The image shows the last 1 1/2 hours worth of data. Each line is 5 minutes long and the image is updated every 5 minutes. One other image can be found on this page http://www.seismicnet.com/currentseismicity.html. This page shows the last 24 hours worth of data from the low frequency port of my SG sensor. Right now the GIF image creation process in WinSDR is very crude. Once I add a few more features I would like to create a web page showing GIF images from other PSN stations. Something like this page http://aslwww.cr.usgs.gov/Seismic_Data/heli2.htm would be neat..... Regards, -Larry Cochrane Redwood City, PSN __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: Volcano in Rwanda From: John Hernlund hernlund@............ Date: Mon, 21 Jan 2002 14:13:15 -0800 David Findlay wrote: > Has anyone got any traces for the volcanic eruption in Rwanda? How far away > has it been detected? Thanks, > > David I wouldn't expect to see anything from this one...it's an oozer; something just turned the faucet on. Cheers! John Hernlund Department of Earth and Space Sciences University of California, Los Angeles http://geodyn.ess.ucla.edu/~hernlund/ hernlund@............ __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: New WinQuake v2.8.6 From: Hammonds hammond@........... Date: Mon, 21 Jan 2002 19:44:11 -0900 Larry, when I enter data into the Event Information, Time window, I keep getting ERROR. I'm following the format mm/dd/yyyy. Am I missing something obvious? (which is usually the case!) Bob Hammond Alaska PSN __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: web site question From: "Jack Sandgathe" jacksand@............... Date: Tue, 22 Jan 2002 14:32:15 -0700 Hi gang, I am looking for a replacement filter capacitor for a bench power supply: 3000 mfd at 75 VDC. It is a 'can' type. I am unable to find anything that large locally, does anyone know where to look, please? Jack Sandgathe __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: RE: web site question From: Ron Westfall westfall@....... Date: Tue, 22 Jan 2002 14:14:56 -0800 Hi Jack Try Digikey (www.digikey.com). They have large can aluminum electrolytic capacitors in the range you specified. After a quick look, I did not see exactly 3000 mfd. I wonder if you can use a 2700 or 3300 mfd.? Ron Westfall > -----Original Message----- > From: psn-l-request@.............. > [mailto:psn-l-request@................. Behalf Of Jack Sandgathe > Sent: Tuesday, January 22, 2002 1:32 PM > To: psn-l@.............. > Subject: Re: web site question > > > Hi gang, > > > I am looking for a replacement filter capacitor for a bench power > supply: 3000 mfd at 75 VDC. It is a 'can' type. I am unable to find > anything that large locally, does anyone know where to look, please? > > Jack Sandgathe > > __________________________________________________________ > > Public Seismic Network Mailing List (PSN-L) > > To leave this list email PSN-L-REQUEST@.............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: Volcano in Rwanda From: Dave Nelson davenn@.............. Date: Wed, 23 Jan 2002 17:31:35 +1100 At 08:48 AM 1/21/02 +1000, you wrote: >Has anyone got any traces for the volcanic eruption in Rwanda? How far away >has it been detected? Thanks, >David Hi David, the eruption has been producing a few M4 to M5 events see the NEIC seismicity lists at that size they probably werent recorded for more than a few 100 km away cheers Dave __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Quake in Crete From: "David Saum" DSaum@............ Date: Wed, 23 Jan 2002 14:00:46 -0500 It appears that the 6.2 quake in Crete on 1/22/02 was easier to detect from 8000 km in the US with a short period seismometer than a long period device. Here is some data on this quake that I got from one of my QM-1.0 all-in-one processing boards set to a 1Hz lowpass, and connected it to an old EV-17 seismometer that I got from Larry. http://www.infiltec.com/seismo/020122a.gif quake gif http://www.infiltec.com/seismo/020122af.gif fft gif http://www.infiltec.com/seismo/020122a.set raw data The P wave is strong but the S is undetectable. This EV-17 detection is similar to the LCSN data from NY sensors: http://www.infiltec.com/seismo/020122p.gif As of now there is only one US long period data set on PSN http://www.seismicnet.com/cgi-dos/makegif.exe?/quakes/0201/020122.045332.nc4 ..psn Although the P appears weaker here, this data shows the S wave which the EV-17 was unable to detect. This data is from NJ. ....Dave http://www.infiltec.com/seismo/ __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: Quake in Crete From: RLLaney@....... Date: Wed, 23 Jan 2002 14:18:41 EST In a message dated 1/23/02 2:01:34 PM Eastern Standard Time, DSaum@............ writes: << It appears that the 6.2 quake in Crete on 1/22/02 was easier to detect from 8000 km in the US with a short period seismometer than a long period device. >> Dave: I picked up the Crete event with my Lehman and SG, but only got the P wave. Had to filter out a lot noise both above and below the event. I have tried to download the event record to the PSN web page, but get an error message when I try. Also, when I try to download the new version of Winquake the connection breaks about a third of the way through. Anyone else experiencing these problems with connecting with Larry's web page? Bob Laney Herndon, VA __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: Quake in Crete From: Hammonds hammond@........... Date: Wed, 23 Jan 2002 18:31:38 -0900 Here's what I got in Alaska for the Crete quake: http://apsn.awcable.com/neweq.htm and click on the latest quake. Bob Hammond APSN Fairbanks __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Motorola Oncore GT+ GPS receivers/antennas on eBay From: Hammonds hammond@........... Date: Sat, 26 Jan 2002 16:08:48 -0900 See this link http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=1327188275 __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: EV-17 wiring? From: "David Saum" DSaum@............ Date: Mon, 28 Jan 2002 15:51:29 -0500 Can anyone give me the wiring information for the EV-17 seismometer? Mine has a cable the three pairs of output wires: 1. pair in a green foil shied 2. pair in a blue foil shield 3. pair in a red foil shield Pair 1 has a 5k ohm resistance and seems to give a pretty good signal. The other pairs are much lower resistance. Can I just leave the red (#3) and blue (#2) pairs unconnected? Thanks, Dave http://www.infiltec.com/seismo/ __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: EV-17 wiring? From: ChrisAtUpw@....... Date: Mon, 28 Jan 2002 17:17:48 EST Dear Dave Saum, The data sheets for the EV-17 vertical can still be found at http://www.bc.edu/bc_org/avp/cas/wesobs/seismometers/ev17.pdf The 'standard' coil resistances are 500 and 5000 Ohm. The 0.7 critical damping resistors are 1,300 or 13,000 Ohm. The wiring connections are not given, but the sheet claims 'Use of a standard ETL P14A plug-in connector facilitates quick cable and damping resistor changes when desired'. The photo shows a single connector with a Y jointed lead, suggesting that at least two connections are required. Are they in insulated pairs? One pair may be a calibration coil. Could the other one be a temperature sensor? What are the resistances? Does the output of the 5 K coil change when you put say 1 mA through another pair? Give the case a tap and see if the 5 K output is damped and if the other connectors give any signal at all. Regards, Chris Chapman Dear Dave Saum,

      The data sheets for the EV-17 vertical can still be found at http://www.bc.edu/bc_org/ avp/cas/wesobs/seismometers/ev17.pdf

      The 'standard' coil resistances are 500 and 5000 Ohm. The 0.7 critical damping resisto rs are 1,300 or 13,000 Ohm. The wiring connections are not given, but the sheet claims 'Use of a standard ETL P14A plug-in conn ector facilitates quick cable and damping resistor changes when desired'. The photo shows a single connector with a Y jointed l ead, suggesting that at least two connections are required.

      Are they in insulated pairs? One pair may be a calibration coil. Could the other one b e a temperature sensor? What are the resistances? Does the output of the 5 K coil change when you put say 1 mA through another pair? Give the case a tap and see if the 5 K output is damped and if the other connectors give any signal at all.

      Regards,

      Chris Chapman Subject: RE: EV-17 wiring? From: Jack Ivey ivey@.......... Date: Mon, 28 Jan 2002 15:54:05 -0500 David, On mine, the high resistance coil is the sense coil (5k), and the low resistance appears to be a calibration coil. The third pair was unconnected on my unit There are only 2 pair leading into the case, although there were 3 pair at the circular connector. If you're running a non-feedback arrangement, you can leave the low R coil disconnected. Jack Ivey > -----Original Message----- > From: David Saum [mailto:DSaum@............. > Sent: Monday, January 28, 2002 3:51 PM > To: psn-l@.............. > Subject: EV-17 wiring? > > > Can anyone give me the wiring information > for the EV-17 seismometer? Mine has a cable > the three pairs of output wires: > > 1. pair in a green foil shied > > 2. pair in a blue foil shield > > 3. pair in a red foil shield > > Pair 1 has a 5k ohm resistance > and seems to give a pretty good > signal. The other pairs are much > lower resistance. Can I just leave > the red (#3) and blue (#2) pairs > unconnected? > > Thanks, > > Dave > http://www.infiltec.com/seismo/ > > __________________________________________________________ > > Public Seismic Network Mailing List (PSN-L) > > To leave this list email PSN-L-REQUEST@.............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. > __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: FW: Anchorage Daily News | Quaking lights From: "Bob Hancock" robert.hancock@........... Date: Mon, 28 Jan 2002 21:50:43 -0500 This has some interesting comments about the phenomena of illumination associated with earthquakes. --------------------------------------------------------------- Anchorage Daily News | Quaking lights Scientists drawn to legends of luminous displays that precede temblors By Alberto Enriquez, Anchorage Daily News http://www.adn.com/life/story/753386p-803392c.html Published: January 21, 2002 When it comes to earthquakes, the earth doesn't just move. It often roars. It broadcasts at radio frequencies. And if the conditions are right, it even produces a visible glow. So-called "earthquake lights" are nothing new. The Greek historian Thucydides wrote that "immense columns of flame" foretold the destruction of two ancient cities, Helice and Burls, by earthquake. Far across the ancient world, the author of a traditional Japanese haiku recorded: The earth speaks softly Read the full story online at http://www.adn.com/life/story/753386p-803392c.html --------------------------------------------------------------- This article is protected by copyright and should not be printed or distributed for anything except personal use. For information on reprinting this article or placing it on your Web site, please contact the Daily News marketing department at (907) 257-4429 or marketing@........ __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: quakes in LA area From: John Hernlund hernlund@............ Date: Mon, 28 Jan 2002 22:08:45 -0800 Just felt a few quakes here at UCLA...local Mercalli intensity around 3-4 in the last one a few minutes ago. More small ones as well with intensity 2-3. Anyone in the area record anything? __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: more on quakes From: John Hernlund hernlund@............ Date: Mon, 28 Jan 2002 22:18:30 -0800 Looks like a cluster of events around Ml4, with this being the largest so far... A light earthquake occurred at 9:53:28 PM (PST) on Monday, January 28, 2002. The magnitude 4.2 event occurred 10 km (6 miles) NNE (20 degrees) of Simi Valley, CA. The hypocentral depth is 13 km ( 8 miles). __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: quakes in LA area From: "Larry Cochrane" cochrane@.............. Date: Mon, 28 Jan 2002 23:02:26 -0800 The USGS geophone I am monitoring using telemetry recorded the 4.2 event. The event was ~460km from the sensor. I've posted the event file on my system. I also have more gif file images on this page http://www.seismicnet.com/currentseismicity.html. One of the images shows this sensor. The sensor channel is CNI. -Larry Cochrane Redwood City, PSN ----- Original Message ----- From: "John Hernlund" To: Sent: Monday, January 28, 2002 10:08 PM Subject: quakes in LA area > Just felt a few quakes here at UCLA...local Mercalli intensity around 3-4 in > the last one a few minutes ago. More small ones as well with intensity 2-3. > Anyone in the area record anything? > > __________________________________________________________ > > Public Seismic Network Mailing List (PSN-L) > > To leave this list email PSN-L-REQUEST@.............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. > __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: RE: quakes in LA area From: steve hammond shammon1@............. Date: Tue, 29 Jan 2002 23:16:45 -0800 Larry, I was also amazed to see that my geophone's in Aptos recorded this event. I posted the files to the website. They are listed under 020130 date and the geophones are ATE ATZ ATN the E/W Lehman is ATL my N/S still needs to have the damping adjusted so I didn't put it up. Regards, Steve Hammond PSN Aptos, CA -----Original Message----- From: Larry Cochrane [SMTP:cochrane@............... Sent: Monday, January 28, 2002 11:02 PM To: psn-l@.............. Subject: Re: quakes in LA area The USGS geophone I am monitoring using telemetry recorded the 4.2 event. The event was ~460km from the sensor. I've posted the event file on my system. I also have more gif file images on this page http://www.seismicnet.com/currentseismicity.html. One of the images shows this sensor. The sensor channel is CNI. -Larry Cochrane Redwood City, PSN ----- Original Message ----- From: "John Hernlund" To: Sent: Monday, January 28, 2002 10:08 PM Subject: quakes in LA area > Just felt a few quakes here at UCLA...local Mercalli intensity around 3-4 in > the last one a few minutes ago. More small ones as well with intensity 2-3. > Anyone in the area record anything? > > __________________________________________________________ > > Public Seismic Network Mailing List (PSN-L) > > To leave this list email PSN-L-REQUEST@.............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. > __________________________________________________________ Public Seismic Network Mailing List (PSN-L) __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: RE: quakes in LA area From: steve hammond shammon1@............. Date: Tue, 29 Jan 2002 23:26:26 -0800 Sorry, my goof... The 020130 files are from the Gonzales, CA 3.3 event tonight. The Simi files are under the 020129 date. Regards, Steve Hammond PSN Aptos, CA -----Original Message----- From: steve hammond [SMTP:shammon1@.............. Sent: Tuesday, January 29, 2002 11:17 PM To: 'psn-l@............... Subject: RE: quakes in LA area Larry, I was also amazed to see that my geophone's in Aptos recorded this event. I posted the files to the website. They are listed under 020130 date and the geophones are ATE ATZ ATN the E/W Lehman is ATL my N/S still needs to have the damping adjusted so I didn't put it up. Regards, Steve Hammond PSN Aptos, CA -----Original Message----- From: Larry Cochrane [SMTP:cochrane@............... Sent: Monday, January 28, 2002 11:02 PM To: psn-l@.............. Subject: Re: quakes in LA area The USGS geophone I am monitoring using telemetry recorded the 4.2 event. The event was ~460km from the sensor. I've posted the event file on my system. I also have more gif file images on this page http://www.seismicnet.com/currentseismicity.html. One of the images shows this sensor. The sensor channel is CNI. -Larry Cochrane Redwood City, PSN ----- Original Message ----- From: "John Hernlund" To: Sent: Monday, January 28, 2002 10:08 PM Subject: quakes in LA area > Just felt a few quakes here at UCLA...local Mercalli intensity around 3-4 in > the last one a few minutes ago. More small ones as well with intensity 2-3. > Anyone in the area record anything? > > __________________________________________________________ > > Public Seismic Network Mailing List (PSN-L) > > To leave this list email PSN-L-REQUEST@.............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. > __________________________________________________________ Public Seismic Network Mailing List (PSN-L) __________________________________________________________ Public Seismic Network Mailing List (PSN-L) __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Please change your links to the Alaska Public Seismic Network From: Hammonds hammond@........... Date: Wed, 30 Jan 2002 05:24:04 -0900 The Alaska Public Seismic Network web page has moved from: http://www.ptialaska.net/~whammond to http://apsn.awcable.com Please update your links to this site. thanks Bob Hammond Fairbanks, Alaska __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Earthquakes and pendulum clocks From: BOB BARNS royb1@........... Date: Wed, 30 Jan 2002 11:28:13 -0500 Hi gang, There is an interesting story about earthquakes and pendulum clocks at: http://www.bmumford.com/mset/tech/quake/ Bill Scolnik is a friend here in northern New Jersey. He is on this net and has a rather elaborate seismograph station. Bob __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: Earthquakes and pendulum clocks From: Doug Crice dcrice@............ Date: Wed, 30 Jan 2002 07:20:28 -0800 In the 1989 Loma Prieta earthquake, my pendulum clock fell over on its face and the weights went the glass, so I guess you could say the earthquake stopped it. It's now screwed to the wall, but the mechanism is still flakey. Doug BOB BARNS wrote: > > Hi gang, > There is an interesting story about earthquakes and pendulum clocks > at: > > http://www.bmumford.com/mset/tech/quake/ > __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Integration of data From: "Randall Pratt" randallpratts@.......... Date: Wed, 30 Jan 2002 10:28:15 -0600 Hi All, I was looking at an integrated file from my long period horizontal and = several questions arose. First, since this is a velocity sensor the = integration should provide displacement. What I am finding is that the = integrated data does not start at zero. I would anticipate that with no = starting conditions known the displacement would be constrained to zero = initially. Secondly, this particular data begins with positive velocity = but the integration gives a negative displacement. Here are the first 8 = points of data and the integration. I used the PSN2TEXT.exe to extract = the data file and I used cursor position on the WinQuake screen to get = the integrated points. The DC offset is about -5 for the file so data = should be reduced by that amount and the rate is about 1.2 sps. Does = anyone have an explanation? Data: integrated =20 7 -73=20 =20 7 -71=20 =20 -1 -76=20 =20 -1 -81=20 =20 2 -83=20 =20 3 -85=20 =20 5 -86=20 =20
Hi All,
I was looking at an integrated file = from my long=20 period horizontal and several questions arose.  First, since this = is a=20 velocity sensor the integration should provide displacement.  What = I am=20 finding is that the integrated data does not start at zero.  I = would=20 anticipate that with no starting conditions known the displacement would = be=20 constrained to zero initially.  Secondly, this particular data = begins with=20 positive velocity but the integration gives a negative = displacement.  Here=20 are the first 8 points of data and the integration.  I used the=20 PSN2TEXT.exe to extract the data file and I used cursor position on the = WinQuake=20 screen to get the integrated points.  The DC offset is about -5 for = the=20 file so data should be reduced by that amount and the rate is about 1.2=20 sps.  Does anyone have an explanation?
 

Data:

integrated

7

-73

7

-71

-1

-76

-1

-81

2

-83

3

-85

5

-86 =

Subject: RE: Earthquakes and pendulum clocks From: steve hammond shammon1@............. Date: Wed, 30 Jan 2002 09:02:18 -0800 Thanks Bob-- that was interesting. During the Lomp Prieta earthquake my grandfather clock was bolted to the wall and it stopped. Regards, Steve Hammond PSN Apttos, CA -----Original Message----- From: Doug Crice [SMTP:dcrice@............. Sent: Wednesday, January 30, 2002 7:20 AM To: psn-l@.............. Subject: Re: Earthquakes and pendulum clocks In the 1989 Loma Prieta earthquake, my pendulum clock fell over on its face and the weights went the glass, so I guess you could say the earthquake stopped it. It's now screwed to the wall, but the mechanism is still flakey. Doug BOB BARNS wrote: > > Hi gang, > There is an interesting story about earthquakes and pendulum clocks > at: > > http://www.bmumford.com/mset/tech/quake/ > __________________________________________________________ Public Seismic Network Mailing List (PSN-L) __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: PSN website missing link URL letters... From: meredithlamb meredithlamb@............. Date: Thu, 31 Jan 2002 20:56:28 -0700 Hi all, Note that the front page website is missing afew URL letters; specifically with reference to three link URL's on the front page underneath "New-Winquake Release 2.8.6" "New Earthquake Data Files" ( it will show: http:/cgi-dos/event.exe ) On your browser, just enter in: http://psn.quake.net/cgi-dos/event.exe "Earthquake Data Files" ( it will show: http:/quakes ) On your browser, just enter in: http://psn.quake.net/quakes "search" ( it will show: http:/cgi-dos/eqfiles.exe ) On your browser, just enter in http://psn.quake.net/cgi-dos/eqfiles.exe Hope its not a bug.... Take care everyone, Meredith __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: PSN website quake files... From: meredithlamb meredithlamb@............. Date: Thu, 31 Jan 2002 22:59:57 -0700 Hi all, Apparently all the quake files are also missing letters in their URL's links specifically in relation to the "gif" images. One has to add: http://psn.quake.net in your browser URL typeable address selection bar, PRIOR, to that shown by your monitor cursor illustrated URL, shown over the selected "gif" link. Take care all, Meredith __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: PSN website missing link URL letters... From: "Larry Cochrane" cochrane@.............. Date: Fri, 1 Feb 2002 02:31:39 -0800 Has anyone else seen this problem? When I access my web pages everything works correctly. Most of the links on my web site are relative meaning the web server adds the domain name part as it sends out the data. This way I can have two DSL lines with different IP address that can serve my web pages. The two domain names are www.seismicnet.com and psn.seismicnet.com or www.webtronics.com.com and psn.webtronics.com. The psn.quake.net domain is the same as psn.seismicnet.com. -Larry Cochrane Redwood City, PSN ----- Original Message ----- From: "meredithlamb" To: Sent: Thursday, January 31, 2002 7:56 PM Subject: PSN website missing link URL letters... > Hi all, > > Note that the front page website is missing afew URL letters; > specifically with reference to three link URL's on the front > page underneath "New-Winquake Release 2.8.6" > > "New Earthquake Data Files" > ( it will show: http:/cgi-dos/event.exe ) > On your browser, just enter in: http://psn.quake.net/cgi-dos/event.exe > > "Earthquake Data Files" > ( it will show: http:/quakes ) > On your browser, just enter in: http://psn.quake.net/quakes > > "search" > ( it will show: http:/cgi-dos/eqfiles.exe ) > On your browser, just enter in http://psn.quake.net/cgi-dos/eqfiles.exe > > Hope its not a bug.... > > Take care everyone, Meredith > > > > > > __________________________________________________________ > > Public Seismic Network Mailing List (PSN-L) > > To leave this list email PSN-L-REQUEST@.............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. > __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: PSN website missing link URL letters... From: "Mark Robinson" mark.robinson@............... Date: Sat, 2 Feb 2002 00:36:15 +1300 I've tested it with IE5.5, konqueror 2.2.2 and Netscap 4.77 and all seems fine. Mark ----- Original Message ----- From: "Larry Cochrane" To: Sent: Friday, February 01, 2002 11:31 PM Subject: Re: PSN website missing link URL letters... > Has anyone else seen this problem? When I access my web pages everything > works correctly. Most of the links on my web site are relative meaning the > web server adds the domain name part as it sends out the data. This way I > can have two DSL lines with different IP address that can serve my web > pages. The two domain names are www.seismicnet.com and psn.seismicnet.com or > www.webtronics.com.com and psn.webtronics.com. The psn.quake.net domain is > the same as psn.seismicnet.com. > > -Larry Cochrane > Redwood City, PSN > > > ----- Original Message ----- > From: "meredithlamb" > To: > Sent: Thursday, January 31, 2002 7:56 PM > Subject: PSN website missing link URL letters... > > > > Hi all, > > > > Note that the front page website is missing afew URL letters; > > specifically with reference to three link URL's on the front > > page underneath "New-Winquake Release 2.8.6" > > > > "New Earthquake Data Files" > > ( it will show: http:/cgi-dos/event.exe ) > > On your browser, just enter in: http://psn.quake.net/cgi-dos/event.exe > > > > "Earthquake Data Files" > > ( it will show: http:/quakes ) > > On your browser, just enter in: http://psn.quake.net/quakes > > > > "search" > > ( it will show: http:/cgi-dos/eqfiles.exe ) > > On your browser, just enter in http://psn.quake.net/cgi-dos/eqfiles.exe > > > > Hope its not a bug.... > > > > Take care everyone, Meredith > > > > > > > > > > > > __________________________________________________________ > > > > Public Seismic Network Mailing List (PSN-L) > > > > To leave this list email PSN-L-REQUEST@.............. with > > the body of the message (first line only): unsubscribe > > See http://www.seismicnet.com/maillist.html for more information. > > > > > __________________________________________________________ > > Public Seismic Network Mailing List (PSN-L) > > To leave this list email PSN-L-REQUEST@.............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. > __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Seismograph on EBAY From: Doug Crice dcrice@............ Date: Fri, 01 Feb 2002 06:04:47 -0800 http://cgi.ebay.aol.com/aw-cgi/eBayISAPI.dll?ViewItem&item=1069685175 A Sprengnether S-6000 seismometer and VS-1100 recorder is for sale on EBAY -- Doug Crice http://www.georadar.com 19623 Via Escuela Drive phone 408-867-3792 Saratoga, California 95070 USA fax 408-867-4900 __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: seismograph on ebay From: BOB BARNS royb1@........... Date: Fri, 01 Feb 2002 09:54:15 -0500 Hi, A Sprengnether S-6000 sensor and a VS-1100 recorder are up for auction on ebay. It is said to be for blast waves. The item no. is 1069685175 and the auction ends on 2/7. Bob __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: PSN website missing link URL letters... From: meredithlamb meredithlamb@............. Date: Fri, 01 Feb 2002 09:50:51 -0700 Larry and Mark, Apparently you both are correct in being able to access the quake files; I tried 3 other browsers (Earthlink 5, IE 6, and Netscape 4.5), and they all worked....its evidently my Netscape 6.2 browser (downloaded on the web), thats "defunct" somehow. Had several disconnects in downloading Netscape 6.2 as I recall; which could have caused a loss of code, etc. Thanks for the checkout by you both, to pinpoint the cause here. Meredith Lamb __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: PSN website missing link URL letters... From: ian ian@........... Date: Fri, 01 Feb 2002 07:23:30 -1000 my netscape 6.2 also has the same problem, so nothing to do with difficult downloads of netscape. Looking at the html for say New Earthquake files...
  • New Earthquake Data Files. clearly not an absolute reference. It's as if the other browsers know to stick psn.quake.net/ in between the :/ and the cgi Ian Smith meredithlamb wrote: > Larry and Mark, > > Apparently you both are correct in being able to access the quake files; > I tried 3 other browsers (Earthlink 5, IE 6, and Netscape 4.5), and they > all worked....its evidently my Netscape 6.2 browser (downloaded on > the web), thats "defunct" somehow. Had several disconnects in > downloading Netscape 6.2 as I recall; which could have caused a loss > of code, etc. Thanks for the checkout by you both, to pinpoint the > cause here. > > Meredith Lamb > > > > > > > __________________________________________________________ > > Public Seismic Network Mailing List (PSN-L) > > To leave this list email PSN-L-REQUEST@.............. with the body of > the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. > > __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: PSN website missing link URL letters... From: "Larry Cochrane" cochrane@.............. Date: Fri, 1 Feb 2002 10:06:28 -0800 As an experiment I remove the http part of the URL for the New Earthquake Data Files link. The link is now
  • New Earthquake Data Files. IE still seems to work fine. Meredith or Ian, please try the link with Netscape 6.2 an let me know if this fixes the problem. -Larry Cochrane Redwood City, PSN ----- Original Message ----- From: "ian" To: Sent: Friday, February 01, 2002 9:23 AM Subject: Re: PSN website missing link URL letters... > my netscape 6.2 also has the same problem, so nothing to do with > difficult downloads of netscape. > > Looking at the html for say New Earthquake files... > >
  • New Earthquake Data Files. > > clearly not an absolute reference. It's as if the other browsers know > to stick psn.quake.net/ in between the :/ and the cgi > > Ian Smith > > meredithlamb wrote: > > > Larry and Mark, > > > > Apparently you both are correct in being able to access the quake files; > > I tried 3 other browsers (Earthlink 5, IE 6, and Netscape 4.5), and they > > all worked....its evidently my Netscape 6.2 browser (downloaded on > > the web), thats "defunct" somehow. Had several disconnects in > > downloading Netscape 6.2 as I recall; which could have caused a loss > > of code, etc. Thanks for the checkout by you both, to pinpoint the > > cause here. > > > > Meredith Lamb > > > > > > > > > > > > > > __________________________________________________________ > > > > Public Seismic Network Mailing List (PSN-L) > > > > To leave this list email PSN-L-REQUEST@.............. with the body of > > the message (first line only): unsubscribe > > See http://www.seismicnet.com/maillist.html for more information. > > > > > > > __________________________________________________________ > > Public Seismic Network Mailing List (PSN-L) > > To leave this list email PSN-L-REQUEST@.............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. > __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: PSN website missing link URL letters... From: ian ian@........... Date: Fri, 01 Feb 2002 08:12:54 -1000 Hi, netscape 6 works now with the new links. Thanks Ian Smith Larry Cochrane wrote: >As an experiment I remove the http part of the URL for the New Earthquake >Data Files link. The link is now > >
  • New Earthquake Data Files. > >IE still seems to work fine. Meredith or Ian, please try the link with >Netscape 6.2 an let me know if this fixes the problem. > >-Larry Cochrane >Redwood City, PSN > > > >----- Original Message ----- >From: "ian" >To: >Sent: Friday, February 01, 2002 9:23 AM >Subject: Re: PSN website missing link URL letters... > > >>my netscape 6.2 also has the same problem, so nothing to do with >>difficult downloads of netscape. >> >>Looking at the html for say New Earthquake files... >> >>
  • New Earthquake Data Files. >> >>clearly not an absolute reference. It's as if the other browsers know >>to stick psn.quake.net/ in between the :/ and the cgi >> >>Ian Smith >> >>meredithlamb wrote: >> >>>Larry and Mark, >>> >>>Apparently you both are correct in being able to access the quake files; >>>I tried 3 other browsers (Earthlink 5, IE 6, and Netscape 4.5), and they >>>all worked....its evidently my Netscape 6.2 browser (downloaded on >>>the web), thats "defunct" somehow. Had several disconnects in >>>downloading Netscape 6.2 as I recall; which could have caused a loss >>>of code, etc. Thanks for the checkout by you both, to pinpoint the >>>cause here. >>> >>>Meredith Lamb >>> >>> >>> >>> >>> >>> >>>__________________________________________________________ >>> >>>Public Seismic Network Mailing List (PSN-L) >>> >>>To leave this list email PSN-L-REQUEST@.............. with the body of >>>the message (first line only): unsubscribe >>>See http://www.seismicnet.com/maillist.html for more information. >>> >>> >> >>__________________________________________________________ >> >>Public Seismic Network Mailing List (PSN-L) >> >>To leave this list email PSN-L-REQUEST@.............. with >>the body of the message (first line only): unsubscribe >>See http://www.seismicnet.com/maillist.html for more information. >> > > >__________________________________________________________ > >Public Seismic Network Mailing List (PSN-L) > >To leave this list email PSN-L-REQUEST@.............. with >the body of the message (first line only): unsubscribe >See http://www.seismicnet.com/maillist.html for more information. > > Hi,

    netscape 6 works now with the new links.

    Thanks

    Ian Smith

    Larry Cochrane wrote:
    As an experiment I remove the http part of the URL for the New Earthquake
    Data Files link. The link is now

    <li><a HREF="/cgi-dos/event.exe">New Earthquake Data Files.

    IE still seems to work fine. Meredith or Ia
n, please try the link with
    Netscape 6.2 an let me know if this fixes the problem.

    -Larry Cochrane
    Redwood City, P
SN



    ----- Original Message -----
    From: "ian"     &l
t;ian@...........>
    To: <psn-l@..............&g
t;
    Sent: Friday, February 01, 2002 9:23 AM
    Subject: Re: PSN website missing link URL letters...


    my netscape 6.2 also has the same problem, so nothing to do with
    difficult downloads of netscape.

    Lo
oking at the html for say New Earthquake files...

    <li><a HREF="http:/cgi-dos/event.exe">New Earthquake Data Files.

    clearly not an absolute reference.  It's as i
f the other browsers know
    to stick psn.quake.net/ in between the :/ and the cgi

    Ian Smith

    meredithlamb wrote:<
br>
    Larry and Mark,

    Apparently you both are correct in being able to access the quake files;
    I tried 3
 other browsers (Earthlink 5, IE 6, and Netscape 4.5), and they
    all worked....its evidently my Netscape 6.2 browser (downloa
ded on
    the web), thats "defunct" somehow.  Had several disconnects in
    downloading Netscape 6.2 as I recall; which could h
ave caused a loss
    of code, etc.  Thanks for the checkout by you both, to pinpoint the
    cause here.

    Meredith Lamb






    __________________________________________________________

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(PSN-L)

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QUEST@.............. with the body of
    the message (first line only): unsubscribe
    See http://www.seismicnet.com/maillist.html for more
 information.



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SN-L)

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EST@.............. with
    the body of the message (first line only): unsubscribe
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ing List (PSN-L)

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    Subject: Re: PSN website missing link URL letters... From: meredithlamb meredithlamb@............. Date: Fri, 01 Feb 2002 11:28:32 -0700 Hi Larry and everyone, Your experiment with "New Earthquake Data Files" worked here also, except of course the followup "gif" images doesn't, along with the "Earthquake Data Files", and the link: "search" in the same line. Perhaps the same change/s would solve the Netscape 6.2 problem. Hope it doesn't unset other browsers though. Also note that the web upload on Netscape 6.2 browser isn't available on other browsers this a.m. Perhaps they are aware of other problems with it? Thanks for the effort Larry. Meredith Lamb Larry Cochrane wrote: >As an experiment I remove the http part of the URL for the New Earthquake >Data Files link. The link is now > >
  • New Earthquake Data Files. > >IE still seems to work fine. Meredith or Ian, please try the link with >Netscape 6.2 an let me know if this fixes the problem. > >-Larry Cochrane >Redwood City, PSN > > > __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: seismograph on ebay From: meredithlamb meredithlamb@............. Date: Fri, 01 Feb 2002 11:44:07 -0700 Bob, Doug and all, Obviously the S-6000 is a older, not currently manufactured 3 component, coil/magnet sensor, 2hz, .5s natural periods/s unit. No idea on the VS-1100 at the moment; but likely older also. Most important, there is no E-Bay note that either actually work at the moment. Meredith BOB BARNS wrote: >Hi, > A Sprengnether S-6000 sensor and a VS-1100 recorder are up for auction >on ebay. It is said to be for blast waves. > The item no. is 1069685175 and the auction ends on 2/7. >Bob > __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: PSN website missing link URL letters... From: "Larry Cochrane" cochrane@.............. Date: Fri, 1 Feb 2002 12:31:49 -0800 Since it looks like this is a problem with Netscape 6.2, I won't make any changes to my web site. -Larry Cochrane Redwood City, ----- Original Message ----- From: "meredithlamb" To: Sent: Friday, February 01, 2002 10:28 AM Subject: Re: PSN website missing link URL letters... > Hi Larry and everyone, > > Your experiment with "New Earthquake Data Files" worked here also, > except of course the followup "gif" images doesn't, along with the > "Earthquake Data Files", and the link: "search" in the same line. Perhaps > the same change/s would solve the Netscape 6.2 problem. Hope it > doesn't unset other browsers though. > > Also note that the web upload on Netscape 6.2 browser isn't > available on other browsers this a.m. Perhaps they are aware of > other problems with it? > > Thanks for the effort Larry. > > Meredith Lamb > > Larry Cochrane wrote: > > >As an experiment I remove the http part of the URL for the New Earthquake > >Data Files link. The link is now > > > >
  • New Earthquake Data Files. > > > >IE still seems to work fine. Meredith or Ian, please try the link with > >Netscape 6.2 an let me know if this fixes the problem. > > > >-Larry Cochrane > >Redwood City, PSN > > > > > > > > > > > __________________________________________________________ > > Public Seismic Network Mailing List (PSN-L) > > To leave this list email PSN-L-REQUEST@.............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. > __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Netscape 6.2 not too great? From: BOB BARNS royb1@........... Date: Fri, 01 Feb 2002 20:16:43 -0500 Hi gang, About Netscape 6.2: I had a major problem with the conversion of my cable service from excite to comcast. I installed the stuff from a cd-rom sent by comcast. This made a mess of my computer which I could not fix. It installed IE properly but Netscape wouldn't work and I use the mail handler in Netscape. I finally discovered (in Netscape's web site) an ad for an outfit called decisionone.com. They claim to solve any problem with well-known software for 30 bucks and that sounded cheap at the price considering all the time I had spent. So I signed up with them and sure enough they solved the problem in about 30 mins. decisionone.com connected me to an >employee of Netscape<. He downloaded a program to my computer which allowed him to operate it exactly as if he were sitting in my chair--he saw my screens and the mouse worked, etc. It was very entertaining. He installed Netscape 4.79 and said that >he preferred it to 6.2Hi gang, > About Netscape 6.2: > I had a major problem with the conversion of my cable service from >excite to comcast. I installed the stuff from a cd-rom sent by >comcast. This made a mess of my computer which I could not fix. > It installed IE properly but Netscape wouldn't work and I use the >mail handler in Netscape. I finally discovered (in Netscape's >web site) an ad for an outfit called decisionone.com. > They claim to solve any problem with well-known software for 30 bucks >and that sounded cheap at the price considering all the time I had >spent. So I signed up with them and sure enough they solved the problem >in about 30 mins. > decisionone.com connected me to an >employee of Netscape<. He >downloaded a program to my computer which allowed him to operate it >exactly as if he were sitting in my chair--he saw my screens and the >mouse worked, etc. It was very entertaining. > He installed Netscape 4.79 and said that >he preferred it to 6.2I did not ask why. > Bob We will probably get told that this is off topic and shouldn't be on this mailing list, but I felt that I needed to add my 2 cents worth. I converted from having excite also, but had no problems. I have found that I need 3 different browsers. I used to use Netscape 4.7 but found that there were some web sites that had links or features that I could not use. So, I got Netscape 6.2. The unfortunate truth is that I have found that I need THREE browsers (Netscape 4.7, 6.2, and Internet Explorer) to do ALL of the functions I run into. "JD" Cooley Poway, California __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: RE: Netscape 6.2 not too great? From: Ron Westfall westfall@....... Date: Fri, 01 Feb 2002 20:21:23 -0800 Hi The IETF (www.ietf.org) defines many of the standards that govern the behaviour of the Internet. The format of URLs is defined by the standard known as RFC 2396. RFC 2396 indicates that URLs such as http:/quakes were allowed by an earlier version of the same standard (RFC 1630), but they have since been recognized to cause problems in some situations (not related to web URLs). For this reason, such URLs are deprecated in favour of the preferred form /quakes. RFC 2396 further indicates that software which supports URLs may choose to correct the deprecated form by inserting the host name, but the software does not have to. Obviously the other browsers have chosen to correct the problem. Netscape 6.2 should be more tolerant and correct the problem as well, but strictly speaking, it is adhering to the standard. Ron > -----Original Message----- > From: psn-l-request@.............. > [mailto:psn-l-request@................. Behalf Of JD Cooley > Sent: Friday, February 01, 2002 7:29 PM > To: psn-l@.............. > Subject: Re: Netscape 6.2 not too great? > > > At 05:16 PM 2/1/02, Bob Barns wrote: > >Hi gang, > > About Netscape 6.2: > > I had a major problem with the conversion of my cable service from > >excite to comcast. I installed the stuff from a cd-rom sent by > >comcast. This made a mess of my computer which I could not fix. > > It installed IE properly but Netscape wouldn't work and I use the > >mail handler in Netscape. I finally discovered (in Netscape's > >web site) an ad for an outfit called decisionone.com. > > They claim to solve any problem with well-known software for 30 bucks > >and that sounded cheap at the price considering all the time I had > >spent. So I signed up with them and sure enough they solved the problem > >in about 30 mins. > > decisionone.com connected me to an >employee of Netscape<. He > >downloaded a program to my computer which allowed him to operate it > >exactly as if he were sitting in my chair--he saw my screens and the > >mouse worked, etc. It was very entertaining. > > He installed Netscape 4.79 and said that >he preferred it to 6.2 >I did not ask why. > > Bob > > We will probably get told that this is off topic and shouldn't be on this > mailing list, but I felt that I needed to add my 2 cents worth. > > I converted from having excite also, but had no problems. I have found > that I need 3 different browsers. I used to use Netscape 4.7 but found > that there were some web sites that had links or features that I could not > use. So, I got Netscape 6.2. The unfortunate truth is that I have found > that I need THREE browsers (Netscape 4.7, 6.2, and Internet Explorer) to do > ALL of the functions I run into. > > "JD" Cooley > Poway, California > > __________________________________________________________ > > Public Seismic Network Mailing List (PSN-L) > > To leave this list email PSN-L-REQUEST@.............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: Netscape 6.2 not too great? From: meredithlamb meredithlamb@............. Date: Fri, 01 Feb 2002 22:29:45 -0700 Hi all, JD.....sounds about the same here, with all the browsers. Tried to download a FTP upgrade on Winquake but couldn't do it with any browser except Netscape 6.2. On the other hand; there was another different download that wouldn't work; except it would for IE 5. Wonder what Linux Red Hat does.....ha. Meredith JD Cooley wrote: >> > > We will probably get told that this is off topic and shouldn't be on > this mailing list, but I felt that I needed to add my 2 cents worth. > > I converted from having excite also, but had no problems. I have > found that I need 3 different browsers. I used to use Netscape 4.7 > but found that there were some web sites that had links or features > that I could not use. So, I got Netscape 6.2. The unfortunate truth > is that I have found that I need THREE browsers (Netscape 4.7, 6.2, > and Internet Explorer) to do ALL of the functions I run into. > > "JD" Cooley > Poway, California > __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: O'neil Fault System From: steve hammond shammon1@............. Date: Mon, 28 Jan 2002 14:57:06 -0800 http://quake.wr.usgs.gov/recenteqs/latest.htm Is it just me... or is the O'neil Fault system in central California moving? I can't remember seeing much action along this fault for awhile. Over the past few days there has been a number of 2's and one 3 down near Avenal. There was also a two in Parkfield. Steve Hammond PSN Aptos, CA __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Authors (and Admirers) of Out-of-Print Books From: "Frances Reed" FReed@.................. Date: Sat, 2 Feb 2002 10:57:37 -0500 Dear PSN-L Members: We are a relatively new publishing company dedicated to keeping in print = and available for purchase book titles which larger publishers have lost interest in and have declared "out of print". We are especially = interested in scholarly book titles. If you are author whose book is out of print, or if you are aware of an = out of print book which you believe has value and should be returned to = print, please contact us. Keeping valuable book titles in print and available = is what we do. Frances Reed Publisher The Blackburn Press freed@.................. www.blackburnpress.com 973-228-7077 973-228-7276 (fax) Subject: Hrubetz experimental vertical From: meredithlamb meredithlamb@............. Date: Sat, 02 Feb 2002 12:31:30 -0700 Hi all, John Cole...I noted your seismogram with the "Hrubetz experimental vertical" on the PSN quake files; of Jan 30th 2002. It seems to have a strong sensor (?), or the gain was high? Any kind of description of the seismometer....just to give some kind of curiosity whetting? Couldn't find anything right off on a web search of the "Hrubetz". Thanks, Meredith __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: New WinQuake and Current Seismicity Images From: johnc c cole johnccole1@........ Date: Sat, 2 Feb 2002 21:05:01 -0600 Meredith, I am doing some preliminary construction work on a design submitted to me by Al Hrubetz of Dallas, Texas. Al is a member of our group. We have worked together on other coil and seismometer designs in the past and continue to do so. This particular design is a radical departure from anything i am aware of that is being used by the amateur fraternity and the development is still in a very early experimental stage. For this reason and because we are still working on the prototype , it is too early to pass on any information at this point in time since our work is in flux. In fact , I made some construction changes only last week based on some design modifications . I will make postings as the work progresses , if the seismogram seem appropriate to post . We would appreciate any comments on these postings . The gain was set at a minimum on Larry's board . I reduced the gain even more using Larry's instructions . Take care . JC ________________________________________________________________ GET INTERNET ACCESS FROM JUNO! Juno offers FREE or PREMIUM Internet access for less! Join Juno today! For your FREE software, visit: http://dl.www.juno.com/get/web/. __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: New WinQuake and Current Seismicity Images From: meredithlamb meredithlamb@............. Date: Sat, 02 Feb 2002 21:42:31 -0700 Hi John & Al, and all, OK John....you know...this just creates more intense curiosity ....ha. Take care, Meredith johnc c cole wrote: > Meredith, > I am doing some preliminary construction work on a design submitted > to me by Al Hrubetz of Dallas, Texas. Al is a member of our group. We > have worked together on other coil and seismometer designs in the past > and continue to do so. This particular design is a radical departure from > anything i am aware of that is being used by the amateur fraternity and > the development is still in a very early experimental stage. For this > reason and because we are still working on the prototype , it is too > early to pass on any information at this point in time since our work is > in flux. In fact , I made some construction changes only last week based > on some design modifications . I will make postings as the work > progresses , if the seismogram seem appropriate to post . We would > appreciate any comments on these postings . > The gain was set at a minimum on Larry's board . I reduced the gain > even more using Larry's instructions . Take care . JC __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Turkey's large quake From: "Francesco" franuc@......... Date: Sun, 3 Feb 2002 12:34:51 +0100 A large event - Ms 6.3 - occurred this morning in central Turkey. Many damnages and, until now, 30 victmis I have posted the files of our italian station on Psn event list. Regards Francesco , Italy
    A large event - Ms 6.3 - occurred this = morning in=20 central Turkey.
    Many damnages and, until now, 30=20 victmis
    I have posted the files of our italian = station on=20 Psn event list.
     
    Regards
     
    Francesco  ,  =20 Italy
    Subject: Re: Turkey's large quake From: Hammonds hammond@........... Date: Sun, 03 Feb 2002 09:50:14 -0900 Here's my record of the Italian quake: http://apsn.awcable.com/neweq.htm Bob Hammond APSN http://apsn.awcable.com __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: History of Redwood City From: "Larry Cochrane" cochrane@.............. Date: Sun, 3 Feb 2002 20:38:59 -0800 All, I found this interesting paragraph while reading over the history of RWC. From the page on http://www.ci.redwood-city.ca.us/about/local_history/exhibits/redwood_city/r wc_history.html "The San Francisco earthquake of 1906 displaced thousands of people, and Redwood City welcomed them with open arms. Real estate companies sprang up overnight, much like the shipping industry had fifty years before. Many of the large estates west of El Camino were subdivided and homes were constructed on smaller lots." -Larry Cochrane, Redwood City, PSN __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: New WinQuake Relase was Netscape 6.2 not too great? From: "Larry Cochrane" cochrane@.............. Date: Mon, 4 Feb 2002 01:15:54 -0800 Ron, Thanks for the information. I can see how http:/quake/ could be ambiguous. Over the last few days I made some changes to my web site to make most of the links relative and to removed any ambiguous links. The changes I made also effect some of the CGI scripts that interact with the user like the New Earthquake Data Files link. The information returned by the scripts have relative links rather then absolute links. I also made some changes to the event files and index.html pages that are in each directory containing the event files. All of the event files on my system now end in .psn. I also changed the download method for each event file. Before the download was using my ftp server now it uses my web server. I think using the web server should be a little faster. If you download event files from my system please let me know if this change is an improvement or not. Since I changed each link to the event files from ftp://.... to http://... I needed to make a change to the PSNExplorer Web browser program that's included with the WinQuake and WinSDR releases. See this page http://www.seismicnet.com/WinSDR/psnexplorer.html for more information on PSNExplorer. The new WinQuake release version 2.8.7 has the updated version of PSNExplorer in it. If you use PSNExplorer to download event files from my system you will need to upgrade to the new release. The only thing different with WinQuake is a bug fix around reading in SAC files. I wasn't using one of the time fields correctly, so the data start time was not getting calculated correctly for some event files. The new release can be downloaded from here http://www.seismicnet.com/software.html. If anyone see any problems with my web site like broken links etc or with the new software releases please let me know. Regards, Larry Cochrane Redwood City, PSN ----- Original Message ----- From: "Ron Westfall" To: Sent: Friday, February 01, 2002 8:21 PM Subject: RE: Netscape 6.2 not too great? > Hi > > The IETF (www.ietf.org) defines many of the standards that govern the > behaviour of the Internet. The format of URLs is defined by the standard > known as RFC 2396. RFC 2396 indicates that URLs such as http:/quakes > were allowed by an earlier version of the same standard (RFC 1630), but > they have since been recognized to cause problems in some situations (not > related to web URLs). For this reason, such URLs are deprecated in favour > of the preferred form /quakes. RFC 2396 further indicates that software > which supports URLs may choose to correct the deprecated form by inserting > the host name, but the software does not have to. > > Obviously the other browsers have chosen to correct the problem. Netscape > 6.2 should be more tolerant and correct the problem as well, but strictly > speaking, it is adhering to the standard. > > Ron > > > -----Original Message----- > > From: psn-l-request@.............. > > [mailto:psn-l-request@................. Behalf Of JD Cooley > > Sent: Friday, February 01, 2002 7:29 PM > > To: psn-l@.............. > > Subject: Re: Netscape 6.2 not too great? > > > > > > At 05:16 PM 2/1/02, Bob Barns wrote: > > >Hi gang, > > > About Netscape 6.2: > > > I had a major problem with the conversion of my cable service from > > >excite to comcast. I installed the stuff from a cd-rom sent by > > >comcast. This made a mess of my computer which I could not fix. > > > It installed IE properly but Netscape wouldn't work and I use the > > >mail handler in Netscape. I finally discovered (in Netscape's > > >web site) an ad for an outfit called decisionone.com. > > > They claim to solve any problem with well-known software for 30 bucks > > >and that sounded cheap at the price considering all the time I had > > >spent. So I signed up with them and sure enough they solved the problem > > >in about 30 mins. > > > decisionone.com connected me to an >employee of Netscape<. He > > >downloaded a program to my computer which allowed him to operate it > > >exactly as if he were sitting in my chair--he saw my screens and the > > >mouse worked, etc. It was very entertaining. > > > He installed Netscape 4.79 and said that >he preferred it to 6.2 > >I did not ask why. > > > Bob > > > > We will probably get told that this is off topic and shouldn't be on this > > mailing list, but I felt that I needed to add my 2 cents worth. > > > > I converted from having excite also, but had no problems. I have found > > that I need 3 different browsers. I used to use Netscape 4.7 but found > > that there were some web sites that had links or features that I could not > > use. So, I got Netscape 6.2. The unfortunate truth is that I have found > > that I need THREE browsers (Netscape 4.7, 6.2, and Internet Explorer) to do > > ALL of the functions I run into. > > > > "JD" Cooley > > Poway, California > > > > __________________________________________________________ > > > > Public Seismic Network Mailing List (PSN-L) > > > > To leave this list email PSN-L-REQUEST@.............. with > > the body of the message (first line only): unsubscribe > > See http://www.seismicnet.com/maillist.html for more information. > __________________________________________________________ > > Public Seismic Network Mailing List (PSN-L) > > To leave this list email PSN-L-REQUEST@.............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. > __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: New WinQuake Relase was Netscape 6.2 not too great? From: johnc c cole johnccole1@........ Date: Mon, 4 Feb 2002 12:39:17 -0600 Larry All of these changes are killing me. They are great for someone with a decent working knowledge of the computer but, for some of us they are murder. I need some relief brother. HELP JC PS, K I S ( keep it simple) ________________________________________________________________ GET INTERNET ACCESS FROM JUNO! Juno offers FREE or PREMIUM Internet access for less! Join Juno today! For your FREE software, visit: http://dl.www.juno.com/get/web/. __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: History of Redwood City From: John Hernlund hernlund@............ Date: Mon, 04 Feb 2002 14:46:22 -0800 Thanks for that story Larry. I've heard the same concerning Los Angeles, especially with respect to the Chinese immigrant community which was not welcome in San Fran after the EQ of 1906. Instead they went to the budding town of Los Angeles and set up a community near Olvera street, where historians say LA first began as a primarily hispanic settlement. Now, of course, LA is the second largest city in the US, and is still a favorite place for immigrants to settle down after being displaced from other parts of the country/world. At any rate, it is amazing to think that if not for that quake in 1906, the demographics of CA might have ended up quite different from the current situation. Larry Cochrane wrote: > All, > I found this interesting paragraph while reading over the history of RWC. > >From the page on > http://www.ci.redwood-city.ca.us/about/local_history/exhibits/redwood_city/r > wc_history.html > "The San Francisco earthquake of 1906 displaced thousands of people, and > Redwood City welcomed them with open arms. Real estate companies sprang up > overnight, much like the shipping industry had fifty years before. Many of > the large estates west of El Camino were subdivided and homes were > constructed on smaller lots." __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: soldering pad tips... From: "Kareem" temp@............. Date: Tue, 5 Feb 2002 13:41:15 -0800 Hi all, I'm preparing to unsolder a pad on a circuit board and I'm not exactly sure where unsolder. If anyone is familiar with electronic circuitry, please let me know. I seems that I just need to remove the solder from a particular pad - the only problem is that I'm not certain what the pad actually looks like. Any links or websites with pictures on how to unsolder this would be greatly appreciated. Thanks, Kareem Message
    Hi=20 all,
     
    I'm = preparing to=20 unsolder a pad on a circuit board and I'm not exactly sure where = unsolder. If=20 anyone is familiar with electronic circuitry, please let me know. I = seems that I=20 just need to remove the solder from a particular pad - the only problem = is that=20 I'm not certain what the pad actually looks like. Any links or websites = with=20 pictures on how to unsolder this would be greatly=20 appreciated.
     
     
    Thanks,
     
    Kareem
     
    Subject: Sound Files From: Arie Verveer ajbv@............ Date: Wed, 06 Feb 2002 20:45:46 +0800 Hi All, Lately I've been tinkering around with some code that produces report files from PSN or "Seisan" data. A minor part of the program is to convert PSN or "Seisan" input files to audio files. I thought you might be interested in the output. Have a listen to the latest big quakes at: http://members.iinet.net.au/~ajbv/Sound/Sound.html (note the first character is in upper case - Sound) Just click on the image you are interested in. One file is from the PSN archive; ( "Resia Ud" ) I'm not sure who the author is, by thanks in advance. I have only included the file due to the quakes intensity not for its destructive nature, the other file is from my station. The image and audio file in the HTML document was automatically generated. On the more humours side, one local quake sounded like, click, bang, followed by a quack? It would be rather interesting to have two close seismic stations on the left and right audio channel. Stereo. Cheers Arie __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: R: Sound Files From: "Mauro Mariotti" mariotti@......... Date: Wed, 6 Feb 2002 14:01:53 +0100 Hello, i experienced this kind of analysis from since April 1999. I used SOX to convert binary raw data in WAV files. You can find a special web page at: http://www.infoeq.it/doc12_e.htm I and Andrea Cellini coined the term "phonoseismology" and we published an article on an Italian scientific magazine sometimes ago about it. The pourpose was to catch out precursors signals. Something happened, try to listen the quakes on my web site. The ideas of Arie to use stereo channel for two different station located let's say 10km away could VERY interesting to locatethe source of an event. I suspected that when i started to use sound analysis as precursor research method. Unfortunately i have no possibility to monitor two identical station so far. I would strongly encourage each of you to do something in this direction i firmly believe will bring interesting results. My compliments to Arie! Cheers Mauro ----- Original Message ----- From: Arie Verveer To: Sent: Wednesday, February 06, 2002 1:45 PM Subject: Sound Files > Hi All, Lately I've been tinkering around with some code that produces > report files from PSN or "Seisan" data. A minor part of the program is to > convert PSN or "Seisan" input files to audio files. I thought you might > be interested in the output. > > Have a listen to the latest big quakes at: > > http://members.iinet.net.au/~ajbv/Sound/Sound.html > (note the first character is in upper case - Sound) > > Just click on the image you are interested in. One file is from the PSN > archive; ( "Resia Ud" ) I'm not sure who the author is, by thanks in > advance. I have only included the file due to the quakes intensity not > for its destructive nature, the other file is from my station. The > image and audio file in the HTML document was automatically generated. > > On the more humours side, one local quake sounded like, click, bang, followed > by a quack? > > It would be rather interesting to have two close seismic stations on the left > and right audio channel. Stereo. > > Cheers > > Arie > __________________________________________________________ > > Public Seismic Network Mailing List (PSN-L) > > To leave this list email PSN-L-REQUEST@.............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. > __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: Sound Files From: jmhannon@........ Date: Wed, 6 Feb 2002 08:45:19 -0600 (CST) I have had a sound file of a quake on my web site for a couple of years now. http://soli.inav.net/~jmhannon/950516a.au . Also there is an interesting paper on this subject at http://geology.heroy.smu.edu/~hayward/Sounds/ICAD.pdf -- Jim Hannon http://soli.inav.net/~jmhannon/ 42,11.90N,91,39.26W WB0TXL __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: Sound Files From: ChrisAtUpw@....... Date: Wed, 6 Feb 2002 11:51:34 EST In a message dated 06/02/02, mariotti@......... writes: I > experienced this kind of analysis from since April 1999. I used SOX to > convert binary raw data in WAV files. You can find a special web page at: > http://www.infoeq.it/doc12_e.htm > > I and Andrea Cellini coined the term "phonoseismology" and we published an > article on an Italian scientific magazine sometimes ago about it. > > The purpose was to catch out precursor signals. > Something happened, try to listen the quakes on my web site. > > The ideas of Arie to use stereo channel for two different stations located > let's say 10km away could VERY interesting to locate the source of an event. > I suspected that when i started to use sound analysis as precursor research > method. Unfortunately i have no possibility to monitor two identical > station so far. > I would strongly encourage each of you to do something in this direction i > firmly believe will bring interesting results. > My compliments to Arie! > Cheers > Mauro > > ----- Original Message ----- > From: Arie Verveer > > > Hi All, Lately I've been tinkering around with some code that produces > > report files from PSN or "Seisan" data. A minor part of the program is to > > convert PSN or "Seisan" input files to audio files. I thought you might > > be interested in the output. > > > > Have a listen to the latest big quakes at: > >> http://members.iinet.net.au/~ajbv/Sound/Sound.html > > Just click on the image you are interested in...... > > It would be rather interesting to have two close seismic stations on the > left and right audio channel. Stereo. > >> Cheers > >> Arie Hi Arie & Mauro, The initial part of the recording, which presumably contains the P wave, sounds as if it has a much greater high frequency content than the subsequent section. Is this evident from the FFT of the source, when you divide it up into two relevant sections? There are two methods of making very low frequency signals audible to the human ear in real time, rather than in 'accelerated time'. One method is to generate a continuous tone at say 1 KHz and then use a gain control chip to control the output amplitude. The other way is to use the signal to control the frequency of a Voltage / Frequency converter. It might have an output frequency of 1 KHz with zero input and be modulated by the signal around this value. Do you know if either of these methods have been tried out and if they have provided useful information, either listening to them directly or from a recording? Regards, Chris Chapman In a message dated 06/02/02, mariotti@......... writes:

    I
    exper ienced this kind of analysis from since April 1999. I used SOX to convert binary raw data in WAV files. You can find a special web page at:
    http://www.infoeq.it/doc12_e.htm

    I and Andrea Cellini coined the term "phonoseismology" and we published an article on an Italian scientific magazine someti mes ago about it.

    The purpose was to catch out precursor signals.
    Something happened, try to listen the quakes on my web site.

    The ideas of Arie to use stereo channel for two different stations located let's say 10km away could VERY interesting to lo cate the source of an event.
    I suspected that when i started to use sound analysis as precursor research
    method. Unfortunately i have no possibility to monitor two identical station so far.
    I would strongly encourage each of you to do something in this direction i
    firmly believe will bring interesting results.
    My compliments to Arie!
    Cheers
    Mauro

    ----- Original Message -----
    From: Arie Verveer <ajbv@............>
    Subject: Sound Files


    > H i All, Lately I've been tinkering around with some code that produces
    > report files from PSN or "Seisan" data. A minor part of the program is to
    > convert PSN or "Seisan" input files to audio files. I thought you might
    > be interested in the output.
    >
    > Have a listen to the latest big quakes at:
    >>    http://members.iinet.net.au/~ajbv/Sound/Sound.html
    > Just click on the image you are interested in......
    > It would be rather interesting to have two close seismic stations on the
    left and right audio channel. Stereo.
    >> Cheers
    >> Arie
    Hi Arie & Mauro,

          The initial part of the recording, which presumably contains the P wave, sounds as if it has a much greater high frequency content than the subsequent section. Is this evident from the FFT of the source, when you divide it up into two relevant sections?

          There are two methods of making very low frequency signals audible to the human ear in real time, rather than in 'accelerated time'. One method is to generate a continuous tone at say 1 KHz and then use a gain con trol chip to control the output amplitude. The other way is to use the signal to control the frequency of a Voltage / Frequency converter. It might have an output frequency of 1 KHz with zero input and be modulated by the signal around this value.

          Do you know if either of these methods have been tried out and if they have provided u seful information, either listening to them directly or from a recording?

          Regards,

          Chris Chapman     Subject: New Utility Software From: Arie Verveer ajbv@............ Date: Thu, 07 Feb 2002 12:35:05 +0800 Hi All, This may be of interest. Lately, I've written a program that produces "GIF" image report files from PSN or "Seisan" data. Though, it may have a limited use you may wish to download it from my web site. Please read the documentation that goes with the program. http://members.iinet.net.au/~ajbv/ The program reads PSN and SEISAN input files and produces: Event Image Report Drum Image Report Power Spectrum Report File conversions Audio file generation Digital Filtering HTML Report web page Generation also it: Reads PSN Format type 3 or 4 Reads SEISAN "WAV" format of SUN, LINUX or PC WinSDR Compatible has Debug messages has documentation See: http://members.iinet.net.au/~ajbv/ftp/Drum.html and click the [N} button for one output form, assuming an seismic event occurred. The [Au4] spectrum and any other button, shows the other type's of reports. You can also generate audio files with some types of reports. Have fun after you read the manual! Cheers Arie __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: 2 items of seis interest on ebay From: BOB BARNS royb1@........... Date: Thu, 07 Feb 2002 10:25:56 -0500 Hi, On ebay: Bison Signal Enhancement Seismograph 1570B Item # 1701927467 ends 2/13 SoilTest MD-5 Engineering Seismograph Geophon Item # 1701923739 ends 2/13 Bob __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: 2 items of seis interest on ebay From: Doug Crice dcrice@............ Date: Thu, 07 Feb 2002 07:59:30 -0800 These are "exploration" seismographs, commonly used by engineering geologists and such to look at geologic structure for the first several meters below the surface. You use a sledgehammer as the energy source and a single geophone as the receiver. You start the survey with the hammer and geophone about 3 meters apart, hit the ground, and display the seismic record on a small CRT. An impact switch on the hammer determines the zero time and the arrival time at the geophone is measured with a cursor on the CRT. Next, you move the hammer to say 6 meters and do it again, continuing the move-hammer-move process untill you are far enough to see what you are looking for or until the hammer isn't strong enough to overcome the background vibrations. Each of the arrival times are plotted on a graph, which the operator uses to calculate the seismic velocities and the thickness of the geologic layers (which usually are things like soil, weathered rock, groundwater level, and bedrock). These type of instruments are still in use. These particular ones are over 30 years old. If they are broken, repair parts may not be available and of course they are absolutly no use for earthquake measurements. The seller's price expectations seem ambitious to me, but you only need two suckers to get a good price. Doug BOB BARNS wrote: > > Hi, > On ebay: > Bison Signal Enhancement Seismograph > 1570B Item # 1701927467 > ends 2/13 > > SoilTest MD-5 Engineering Seismograph > Geophon Item # 1701923739 > ends 2/13 > > Bob > __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: RE: 2 items of seis interest on ebay From: Jack Ivey ivey@.......... Date: Thu, 7 Feb 2002 11:42:21 -0500 Doug, It sounds like most of the people on this list would have the equipment needed to reproduce the gadgets listed. Would it be practical to throw a geophone in the back yard and try this as a weekend project or is some magic done inside the box? What kind of sample rate would they use? I might not see much in my case, since I live on top of a thick layer of glacial muck (Southeast Michigan). Jack Ivey > -----Original Message----- > From: Doug Crice [mailto:dcrice@............. > Sent: Thursday, February 07, 2002 11:00 AM > To: psn-l@.............. > Subject: Re: 2 items of seis interest on ebay > > > These are "exploration" seismographs, commonly used by engineering > geologists and such to look at geologic structure for the > first several > meters below the surface. You use a sledgehammer as the energy source > and a single geophone as the receiver. > > You start the survey with the hammer and geophone about 3 > meters apart, > hit the ground, and display the seismic record on a small > CRT. An impact > switch on the hammer determines the zero time and the arrival time at > the geophone is measured with a cursor on the CRT. > > Next, you move the hammer to say 6 meters and do it again, continuing > the move-hammer-move process untill you are far enough to see what you > are looking for or until the hammer isn't strong enough to > overcome the > background vibrations. > > Each of the arrival times are plotted on a graph, which the operator > uses to calculate the seismic velocities and the thickness of the > geologic layers (which usually are things like soil, weathered rock, > groundwater level, and bedrock). > > These type of instruments are still in use. These particular ones are > over 30 years old. If they are broken, repair parts may not > be available > and of course they are absolutly no use for earthquake > measurements. The > seller's price expectations seem ambitious to me, but you > only need two > suckers to get a good price. > > Doug > > BOB BARNS wrote: > > > > Hi, > > On ebay: > > Bison Signal Enhancement Seismograph > > 1570B Item # 1701927467 > > ends 2/13 > > > > SoilTest MD-5 Engineering Seismograph > > Geophon Item # 1701923739 > > ends 2/13 > > > > Bob > > > __________________________________________________________ > > Public Seismic Network Mailing List (PSN-L) > > To leave this list email PSN-L-REQUEST@.............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. > __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: 2 items of seis interest on ebay From: Doug Crice dcrice@............ Date: Thu, 07 Feb 2002 09:29:49 -0800 For hammer work, you use sample rates on the order of 100 microseconds (10,000 sample/sec). The veolcities might run something like this: Soil 1000-2000 ft/sec (300-600 m/s) clays, weathered rock 2000-5000 ft/sec (600-1500 m/s) groundwater 5000 ft/sec (1500 m/s) bedrock 5000-15000 ft/sec (1500-7500 m/s) So, even though the block diagram is similar, you scale the frequencies about three orders of magnitude. Modern exploration seismographs can be seen at my old company http://www.geometrics.com/ Anybody who wants to look at the solutions in more detail should go to http://www.geometrics.com/sci.html and download the booklet "Seismic Refraction Exploration for Engineering Site Investigations" Doug Jack Ivey wrote: > > Doug, > It sounds like most of the people on this list would have > the equipment needed to reproduce the gadgets listed. > Would it be practical to throw a geophone in the > back yard and try this as a weekend project or is some > magic done inside the box? What kind of sample rate would > they use? > __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: RE: New Utility Software From: steve hammond shammon1@............. Date: Thu, 7 Feb 2002 10:57:43 -0800 Wow Arie, that's a nice software program. The reports are really well formatted and informative. FYI-- I'm using Ted's EMON software to capture data and Winquake to maintain the database. I'm able to generate the GIF for each dataset, however the drum report does not seem to work. My question is, is this the expected behavior because I'm not using Larry's SDR software? I also received a message about the HTML header and footer info not found, so I set the HTML_File_Generation = 0 as the message suggested. What HTML is the message talking about? Also, one minor usability issue. The next time you update the RECENT user manual (nice work--- ) you might want to add page numbering. I dropped it coming out of the printer and think I have it in the correct order... Really a cool program-- Thanks. Steve Hammond PSN Aptos, California -----Original Message----- From: Arie Verveer [SMTP:ajbv@............. Sent: Wednesday, February 06, 2002 8:35 PM To: PSN-L@.............. Subject: New Utility Software Hi All, This may be of interest. Lately, I've written a program that produces "GIF" image report files from PSN or "Seisan" data. Though, it may have a limited use you may wish to download it from my web site. Please read the documentation that goes with the program. http://members.iinet.net.au/~ajbv/ The program reads PSN and SEISAN input files and produces: Event Image Report Drum Image Report Power Spectrum Report File conversions Audio file generation Digital Filtering HTML Report web page Generation also it: Reads PSN Format type 3 or 4 Reads SEISAN "WAV" format of SUN, LINUX or PC WinSDR Compatible has Debug messages has documentation See: http://members.iinet.net.au/~ajbv/ftp/Drum.html and click the [N} button for one output form, assuming an seismic event occurred. The [Au4] spectrum and any other button, shows the other type's of reports. You can also generate audio files with some types of reports. Have fun after you read the manual! Cheers Arie __________________________________________________________ Public Seismic Network Mailing List (PSN-L) __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Arrival time calculator From: "Randall Pratt" randallpratts@.......... Date: Thu, 7 Feb 2002 13:57:33 -0600 Recalling the difficulties some of us had with connecting to the NEIC = listings some time back, I'm now unable to use the arrival time = calculator at http://geohazards.cr.usgs.gov/tt/artim.html for the most = recent 21 events. It works fine for other data set selections but over = the last several days always returns 0 events when calling the 21 event = listing. Does anyone else have this trouble? Thanks for the new program Arie. I haven't tried the drum portion but = the other options work great for my EMON files. Randy =20
    Recalling the difficulties some of us = had with=20 connecting to the NEIC listings some time back, I'm now unable to use = the=20 arrival time calculator at http://geohazards.cr= ..usgs.gov/tt/artim.html for=20 the most recent 21 events.  It works fine for other data set = selections but=20 over the last several days always returns 0 events when calling the 21 = event=20 listing.  Does anyone else have this trouble?
     
    Thanks for the new program Arie.  I haven't tried the drum = portion but=20 the other options work great for my EMON = files.
     
    Randy 
    Subject: Re: Arrival time calculator From: The Lahrs johnjan@........ Date: Thu, 07 Feb 2002 21:03:11 -0700 Hi Randy, This is, in a way, related to the "difficulties" of December. The screws are being tightened every day on security and recently we lost all ability both to use finger ourselves and supply "finger quake" information to others. I've just updated the tt web site so that the only file available is the combined ANSS catalog of events for the past 7 days. This file will include events both from the NEIC as well as the regional US networks. Almost all of the regional networks are currently participating, and those who are not should be soon. This same 7-day ANSS catalog file is also available at: ftp://ghtftp.cr.usgs.gov/pub/cnss/cnss.fing Cheers, John At 12:57 PM 2/7/2002, you wrote: >Recalling the difficulties some of us had with connecting to the NEIC >listings some time back, I'm now unable to use the arrival time calculator >at >http://geohazards.cr.usgs.gov/tt/artim.html >for the most recent 21 events. It works fine for other data set >selections but over the last several days always returns 0 events when >calling the 21 event listing. Does anyone else have this trouble? > >Thanks for the new program Arie. I haven't tried the drum portion but the >other options work great for my EMON files. > >Randy John C. Lahr lahr@........ (work) john@........ (home) Central Region Geologic Hazards Team U.S. Geological Survey PO Box 25046 Denver, CO 80225 Work: Phone (303) 273-8596 FAX (303) 273-8600 Home: Phone (303) 215-9913 __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: RE: soldering pad tips... From: Ron Westfall westfall@....... Date: Thu, 07 Feb 2002 23:13:38 -0800 MessageHi Kareem I am assuming that you are removing a component from the circuit board. The circular or square pad surrounds a hole drilled through the circuit board. The sides of the hole are plated with metal. The component lead passes through the hole and solder fastens it to the pad on either side of the board and to the plating on the sides of the hole. The pad is actually copper underneath. What you see on the surface is a solder coating on the copper. The danger with unsoldering components is that the copper pad substrate may lift off the PCB board if the pad is heated too hot and/or too long. If this happens, you are in deep trouble. If you are real careful, you can heat the component lead, and when the solder liquifies, gently pull the component lead out through the hole. Remove the lead in stages rather than let the pad get too hot. Alternatively, you can buy a device called a Soldevac that uses a brief burst of vacuum to suck molten solder out of the component lead hole. If done right, its quick and you are left with a dry hole which the component will almost fall out of. Hope I interpreted your question correctly and that this helps. Ron -----Original Message----- From: psn-l-request@.............. [mailto:psn-l-request@................. Behalf Of Kareem Sent: Tuesday, February 05, 2002 1:41 PM To: PSN Subject: soldering pad tips... Hi all, I'm preparing to unsolder a pad on a circuit board and I'm not exactly sure where unsolder. If anyone is familiar with electronic circuitry, please let me know. I seems that I just need to remove the solder from a particular pad - the only problem is that I'm not certain what the pad actually looks like. Any links or websites with pictures on how to unsolder this would be greatly appreciated. Thanks, Kareem Message
    Hi Kareem
     
    I am assuming that you are removing a component from the circuit board.  The circular or square pad surrounds a hole drilled through the circuit board.  The sides of the hole are plated with metal.  The component lead passes through the hole and solder fastens it to the pad on either side of the board and to the plating on the sides of the hole.  The pad is actually copper underneath.  What you see on the surface is a solder coating on the copper.
     
    The danger with unsoldering components is that the copper pad substrate may lift off the PCB board if the pad is heated too hot and/or too long.  If this happens, you are in deep trouble.
     
    If you are real careful, you can heat the component lead, and when the solder liquifies, gently pull the component lead out through the hole.  Remove the lead in stages rather than let the pad get too hot.  Alternatively, you can buy a device called a Soldevac that uses a brief burst of vacuum to suck molten solder out of the component lead hole.  If done right, its quick and you are left with a dry hole which the component will almost fall out of.
     
    Hope I interpreted your question correctly and that this helps.
     
    Ron
     
    -----Original Message-----
    From: psn-l-request@.............. [mailto:psn-l-request@...............On Behalf Of Kareem
    Sent: Tuesday, February 05, 2002 1:41 PM
    To: PSN
    Subject: soldering pad tips...

    Hi all,
     
    I'm preparing to unsolder a pad on a circuit board and I'm not exactly sure where unsolder. If anyone is familiar with electronic circuitry, please let me know. I seems that I just need to remove the solder from a particular pad - the only problem is that I'm not certain what the pad actually looks like. Any links or websites with pictures on how to unsolder this would be greatly appreciated.
     
     
    Thanks,
     
    Kareem
     
    Subject: Re: New Utility Software From: Arie Verveer ajbv@............ Date: Fri, 08 Feb 2002 16:23:02 +0800 Hi Steve, The easy bit, When the "HTML_File_Generation = 1" switch is set to On (1) then the program looks in the "HTML_Input_Dir" dirctory for two files called "Footer.txt" and "Header.txt". These are acctually one HTML document brocken in two. What happens; it places the newly generated links for your seismic events between two parts. Anyhow just place the two files supplied with the program in a valid directory point the switch "HTML_Input_Dir" to that directory. Say I had these files in D:\Gif\ then the switch becomes. HTML_Input_Dir = D:\Gif\ The good bit, is you can make your own HTML document, then split it in two bits and call them Header.txt and Footer.txt and bingo a customised Web page. Also it would be good in the testing stage to set these swiches Off. HTML_Num_Events = 2 (ON) *HTML_Num_Events = 2 (OFF) Max_Time_Hours = 6 (ON) *Max_Time_Hours = 6 (OFF) I'm not sure about using Ted's EMON program, The utility program "PsnDrum" is used to request regular event files from Larry's SDR software. These are then used to generate the "drum" output. If you can send EMON a request to generate data for a start time and a duration then I could write some code to create these regular seismic files, and thus generate a "Drum" output or a Power Spectrum. Just drop me a line if you think EMON can accept an external request. You could request, say 12 two hours seismic files and place them in a folder and then run the drum option. For a test. Good idea about the page numbering, i'll fix that. Cheers Arie steve hammond wrote: > The reports are really well formatted and informative. FYI-- I'm using > Ted's EMON software to capture data and Winquake to maintain the database. > I'm able to generate the GIF for each dataset, however the drum report does > not seem to work. My question is, is this the expected behavior because I'm > not using Larry's SDR software? I also received a message about the HTML > header and footer info not found, so I set the HTML_File_Generation = 0 as > the message suggested. What HTML is the message talking about? Also, one > minor usability issue. The next time you update the RECENT user manual > (nice work--- ) you might want to add page numbering. I dropped it coming > out of the printer and think I have it in the correct order... > -----Original Message----- > > Hi All, This may be of interest. Lately, I've written a program that > produces "GIF" image report files from PSN or "Seisan" data. Though, > it may have a limited use you may wish to download it from my web site. > Please read the documentation that goes with the program. > http://members.iinet.net.au/~ajbv/ > > The program reads PSN and SEISAN input files and produces: > Event Image Report > > Drum Image Report > Power Spectrum Report > File conversions > Audio file generation > Digital Filtering > HTML Report web page Generation > also it: > Reads PSN Format type 3 or 4 > Reads SEISAN "WAV" format of SUN, LINUX or PC > WinSDR Compatible > has Debug messages > has documentation > > See: http://members.iinet.net.au/~ajbv/ftp/Drum.html > and click the [N} button for one output form, assuming > an seismic event occurred. The [Au4] spectrum and any > other button, shows the other type's of reports. You can > also generate audio files with some types of reports. > Have fun after you read the manual! __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: RE: soldering pad tips... From: "Kareem" temp@............. Date: Fri, 8 Feb 2002 06:15:42 -0800 Thanks Ron Your interpretation was adequate because it helped. -----Original Message----- From: psn-l-request@.............. [mailto:psn-l-request@............... On Behalf Of Ron Westfall Sent: Thursday, February 07, 2002 11:14 PM To: psn-l@.............. Subject: RE: soldering pad tips... Hi Kareem I am assuming that you are removing a component from the circuit board. The circular or square pad surrounds a hole drilled through the circuit board. The sides of the hole are plated with metal. The component lead passes through the hole and solder fastens it to the pad on either side of the board and to the plating on the sides of the hole. The pad is actually copper underneath. What you see on the surface is a solder coating on the copper. The danger with unsoldering components is that the copper pad substrate may lift off the PCB board if the pad is heated too hot and/or too long. If this happens, you are in deep trouble. If you are real careful, you can heat the component lead, and when the solder liquifies, gently pull the component lead out through the hole. Remove the lead in stages rather than let the pad get too hot. Alternatively, you can buy a device called a Soldevac that uses a brief burst of vacuum to suck molten solder out of the component lead hole. If done right, its quick and you are left with a dry hole which the component will almost fall out of. Hope I interpreted your question correctly and that this helps. Ron -----Original Message----- From: psn-l-request@.............. [mailto:psn-l-request@................. Behalf Of Kareem Sent: Tuesday, February 05, 2002 1:41 PM To: PSN Subject: soldering pad tips... Hi all, I'm preparing to unsolder a pad on a circuit board and I'm not exactly sure where unsolder. If anyone is familiar with electronic circuitry, please let me know. I seems that I just need to remove the solder from a particular pad - the only problem is that I'm not certain what the pad actually looks like. Any links or websites with pictures on how to unsolder this would be greatly appreciated. Thanks, Kareem Message
    Thanks=20 Ron
    Your=20 interpretation was adequate because it helped.
    -----Original Message-----
    From:=20 psn-l-request@.............. [mailto:psn-l-request@............... = On=20 Behalf Of Ron Westfall
    Sent: Thursday, February 07, 2002 = 11:14=20 PM
    To: psn-l@..............
    Subject: RE: soldering = pad=20 tips...

    Hi=20 Kareem
     
    I am=20 assuming that you are removing a component from the circuit = board. =20 The circular or square pad surrounds a hole drilled through the = circuit=20 board.  The sides of the hole are plated with metal.  The = component=20 lead passes through the hole and solder fastens it to the pad on = either side=20 of the board and to the plating on the sides of the hole.  The = pad is=20 actually copper underneath.  What you see on the surface is a = solder=20 coating on the copper.
     
    The=20 danger with unsoldering components is that the copper pad substrate = may lift=20 off the PCB board if the pad is heated too hot and/or too long.  = If this=20 happens, you are in deep trouble.
     
    If=20 you are real careful, you can heat the component lead, and when the = solder=20 liquifies, gently pull the component lead out through the hole.  = Remove=20 the lead in stages rather than let the pad get too hot.  = Alternatively,=20 you can buy a device called a Soldevac that uses a brief burst of = vacuum to=20 suck molten solder out of the component lead hole.  If done = right, its=20 quick and you are left with a dry hole which the component will almost = fall=20 out of.
     
    Hope=20 I interpreted your question correctly and that this = helps.
     
    Ron
     
    -----Original Message-----
    From:=20 psn-l-request@.............. = [mailto:psn-l-request@...............On=20 Behalf Of Kareem
    Sent: Tuesday, February 05, 2002 1:41 = PM
    To: PSN
    Subject: soldering pad=20 tips...

    Hi = all,
     
    I'm preparing to=20 unsolder a pad on a circuit board and I'm not exactly sure where = unsolder.=20 If anyone is familiar with electronic circuitry, please let me know. = I seems=20 that I just need to remove the solder from a particular pad - the = only=20 problem is that I'm not certain what the pad actually looks like. = Any links=20 or websites with pictures on how to unsolder this would be greatly=20 appreciated.
     
     
    Thanks,
     
    Kareem
     
    Subject: Re: soldering pad tips... From: "bobshannon.org" earth@........... Date: Fri, 8 Feb 2002 07:22:52 -0800 MessageI wonder if some solder genius can tell me what happened to me 30 = years ago. I was an electronics tech for Seeburg Corp and usually worked = in the field, but many days I spent at the bench fixing things I had = replaced....On one day I was real bored as the only stuff I had to do = were a very common part replacement...so I got out my solder gun and = found a bottlecap and melted solder into it...Then a notion came to = mind.....Why not be creative? I put a silver dime into the bottlecap and = melted solder around it. And just then I had a service call and went = out...There were only two techs and nobody knew I was goofing = around...so I put the bottlecap in my toolbox.... the next day I picked = up the bottlecap to see what I had done....I took it out of the = cap...and there was no dime...so I figured the art test was a flop...so = I heated the solder to see what had happened....Guess what? NO = DIME...the dime was like gone...only solder left....so what in the heck = happened...this happened in 1967.. Anyone got a clue? I have never = solved the problem, nor have been able to re-create the thing... ----- Original Message -----=20 From: Kareem=20 To: psn-l@................. Sent: Friday, February 08, 2002 6:15 AM Subject: RE: soldering pad tips... Thanks Ron=20 Your interpretation was adequate because it helped. -----Original Message----- From: psn-l-request@.............. = [mailto:psn-l-request@............... On Behalf Of Ron Westfall Sent: Thursday, February 07, 2002 11:14 PM To: psn-l@.............. Subject: RE: soldering pad tips... Hi Kareem =20 I am assuming that you are removing a component from the circuit = board. The circular or square pad surrounds a hole drilled through the = circuit board. The sides of the hole are plated with metal. The = component lead passes through the hole and solder fastens it to the pad = on either side of the board and to the plating on the sides of the hole. = The pad is actually copper underneath. What you see on the surface is = a solder coating on the copper. =20 The danger with unsoldering components is that the copper pad = substrate may lift off the PCB board if the pad is heated too hot and/or = too long. If this happens, you are in deep trouble. =20 If you are real careful, you can heat the component lead, and when = the solder liquifies, gently pull the component lead out through the = hole. Remove the lead in stages rather than let the pad get too hot. = Alternatively, you can buy a device called a Soldevac that uses a brief = burst of vacuum to suck molten solder out of the component lead hole. = If done right, its quick and you are left with a dry hole which the = component will almost fall out of. =20 Hope I interpreted your question correctly and that this helps. =20 Ron =20 -----Original Message----- From: psn-l-request@.............. = [mailto:psn-l-request@................. Behalf Of Kareem Sent: Tuesday, February 05, 2002 1:41 PM To: PSN Subject: soldering pad tips... Hi all, =20 I'm preparing to unsolder a pad on a circuit board and I'm not = exactly sure where unsolder. If anyone is familiar with electronic = circuitry, please let me know. I seems that I just need to remove the = solder from a particular pad - the only problem is that I'm not certain = what the pad actually looks like. Any links or websites with pictures on = how to unsolder this would be greatly appreciated. =20 =20 Thanks, =20 Kareem Message
    I wonder if some solder genius can tell me what happened to me 30 = years=20 ago. I was an electronics tech for Seeburg Corp and usually worked in = the field,=20 but many days I spent at the bench fixing things I had = replaced....On one=20 day I was real bored as the only stuff I had to do were a very common = part=20 replacement...so I got out my solder gun and found a bottlecap and = melted solder=20 into it...Then a notion came to mind.....Why not be creative? I put a = silver=20 dime into the bottlecap and melted solder around it. And just then I had = a=20 service call and went out...There were only two techs and nobody knew I = was=20 goofing around...so I put the bottlecap in my toolbox.... the next day I = picked=20 up the bottlecap to see what I had done....I took it out of the = cap...and there=20 was no dime...so I figured the art test was a flop...so I heated the = solder to=20 see what had happened....Guess what? NO DIME...the dime was like = gone...only=20 solder left....so what in the heck happened...this happened in 1967.. = Anyone got=20 a clue? I have never solved the problem, nor have been able to re-create = the=20 thing...
    ----- Original Message -----
    From:=20 Kareem
    • Sent: Friday, February 08, 2002 = 6:15=20 AM
    Subject: RE: soldering pad = tips...

    Thanks Ron
    Your=20 interpretation was adequate because it helped.
    -----Original Message-----
    From: psn-l-request@............... =20 [mailto:psn-l-request@webtron= ics.com]=20 On Behalf Of Ron Westfall
    Sent: Thursday, February = 07, 2002=20 11:14 PM
    To: psn-l@..............
    Subje= ct:=20 RE: soldering pad tips...

    Hi=20 Kareem
     
    I=20 am assuming that you are removing a component from the circuit=20 board.  The circular or square pad surrounds a hole drilled = through the=20 circuit board.  The sides of the hole are plated with = metal.  The=20 component lead passes through the hole and solder fastens it to the = pad on=20 either side of the board and to the plating on the sides of the = hole. =20 The pad is actually copper underneath.  What you see on the = surface is=20 a solder coating on the copper.
     
    The danger with unsoldering components is that the copper = pad=20 substrate may lift off the PCB board if the pad is heated too hot = and/or too=20 long.  If this happens, you are in deep = trouble.
     
    If=20 you are real careful, you can heat the component lead, and when the = solder=20 liquifies, gently pull the component lead out through the = hole.  Remove=20 the lead in stages rather than let the pad get too hot.  = Alternatively,=20 you can buy a device called a Soldevac that uses a brief burst of = vacuum to=20 suck molten solder out of the component lead hole.  If done = right, its=20 quick and you are left with a dry hole which the component will = almost fall=20 out of.
     
    Hope I interpreted your question correctly and that this=20 helps.
     
    Ron
     
    -----Original Message-----
    From:=20 psn-l-request@.............. = [mailto:psn-l-request@...............On=20 Behalf Of Kareem
    Sent: Tuesday, February 05, 2002 = 1:41=20 PM
    To: PSN
    Subject: soldering pad=20 tips...

    Hi=20 all,
     
    I'm preparing=20 to unsolder a pad on a circuit board and I'm not exactly sure = where=20 unsolder. If anyone is familiar with electronic circuitry, please = let me=20 know. I seems that I just need to remove the solder from a = particular pad=20 - the only problem is that I'm not certain what the pad actually = looks=20 like. Any links or websites with pictures on how to unsolder this = would be=20 greatly appreciated.
     
     
    Thanks,
     
    Kareem
    =
     
    Subject: Re: soldering pad tips... From: "Mark Robinson" mark.robinson@............... Date: Sat, 9 Feb 2002 06:25:52 +1300 MessageWas that one of those really old dimes ... back when they were = 95% sikver ? I suspect that it was still there, but had done a shape shifter trick. Mark New Zealand ps: what's a dime ? ----- Original Message -----=20 From: bobshannon.org=20 To: psn-l@................. Sent: Saturday, February 09, 2002 4:22 AM Subject: Re: soldering pad tips... I wonder if some solder genius can tell me what happened to me 30 = years ago. I was an electronics tech for Seeburg Corp and usually worked = in the field, but many days I spent at the bench fixing things I had = replaced....On one day I was real bored as the only stuff I had to do = were a very common part replacement...so I got out my solder gun and = found a bottlecap and melted solder into it...Then a notion came to = mind.....Why not be creative? I put a silver dime into the bottlecap and = melted solder around it. And just then I had a service call and went = out...There were only two techs and nobody knew I was goofing = around...so I put the bottlecap in my toolbox.... the next day I picked = up the bottlecap to see what I had done....I took it out of the = cap...and there was no dime...so I figured the art test was a flop...so = I heated the solder to see what had happened....Guess what? NO = DIME...the dime was like gone...only solder left....so what in the heck = happened...this happened in 1967.. Anyone got a clue? I have never = solved the problem, nor have been able to re-create the thing... ----- Original Message -----=20 From: Kareem=20 To: psn-l@................. Sent: Friday, February 08, 2002 6:15 AM Subject: RE: soldering pad tips... Thanks Ron=20 Your interpretation was adequate because it helped. -----Original Message----- From: psn-l-request@.............. = [mailto:psn-l-request@............... On Behalf Of Ron Westfall Sent: Thursday, February 07, 2002 11:14 PM To: psn-l@.............. Subject: RE: soldering pad tips... Hi Kareem I am assuming that you are removing a component from the circuit = board. The circular or square pad surrounds a hole drilled through the = circuit board. The sides of the hole are plated with metal. The = component lead passes through the hole and solder fastens it to the pad = on either side of the board and to the plating on the sides of the hole. = The pad is actually copper underneath. What you see on the surface is = a solder coating on the copper. The danger with unsoldering components is that the copper pad = substrate may lift off the PCB board if the pad is heated too hot and/or = too long. If this happens, you are in deep trouble. If you are real careful, you can heat the component lead, and when = the solder liquifies, gently pull the component lead out through the = hole. Remove the lead in stages rather than let the pad get too hot. = Alternatively, you can buy a device called a Soldevac that uses a brief = burst of vacuum to suck molten solder out of the component lead hole. = If done right, its quick and you are left with a dry hole which the = component will almost fall out of. Hope I interpreted your question correctly and that this helps. Ron -----Original Message----- From: psn-l-request@.............. = [mailto:psn-l-request@................. Behalf Of Kareem Sent: Tuesday, February 05, 2002 1:41 PM To: PSN Subject: soldering pad tips... Hi all, I'm preparing to unsolder a pad on a circuit board and I'm not = exactly sure where unsolder. If anyone is familiar with electronic = circuitry, please let me know. I seems that I just need to remove the = solder from a particular pad - the only problem is that I'm not certain = what the pad actually looks like. Any links or websites with pictures on = how to unsolder this would be greatly appreciated. Thanks, Kareem Message
    Was that one of those really = old dimes ...=20 back when they were 95% sikver ?
     
    I suspect that it was still = there, but had=20 done a shape shifter trick.
     
    Mark
    New Zealand
     
    ps: what's a dime = ?
    ----- Original Message -----
    From:=20 bobshannon.org=20
    Sent: Saturday, February 09, = 2002 4:22=20 AM
    Subject: Re: soldering pad = tips...

    I wonder if some solder genius can tell me what happened to me 30 = years=20 ago. I was an electronics tech for Seeburg Corp and usually worked in = the=20 field, but many days I spent at the bench fixing things I had=20 replaced....On one day I was real bored as the only stuff I had to do = were a=20 very common part replacement...so I got out my solder gun and found a=20 bottlecap and melted solder into it...Then a notion came to = mind.....Why not=20 be creative? I put a silver dime into the bottlecap and melted solder = around=20 it. And just then I had a service call and went out...There were only = two=20 techs and nobody knew I was goofing around...so I put the bottlecap in = my=20 toolbox.... the next day I picked up the bottlecap to see what I had = done....I=20 took it out of the cap...and there was no dime...so I figured the art = test was=20 a flop...so I heated the solder to see what had happened....Guess = what? NO=20 DIME...the dime was like gone...only solder left....so what in the = heck=20 happened...this happened in 1967.. Anyone got a clue? I have never = solved the=20 problem, nor have been able to re-create the thing...
    ----- Original Message -----
    From:=20 Kareem=20
    Sent: Friday, February 08, = 2002 6:15=20 AM
    Subject: RE: soldering pad=20 tips...

    Thanks Ron
    Your interpretation was adequate because it=20 helped.
    -----Original Message-----
    From: = psn-l-request@............... =20 [mailto:psn-l-request@webtron= ics.com]=20 On Behalf Of Ron Westfall
    Sent: Thursday, = February 07,=20 2002 11:14 PM
    To: psn-l@..............
    Subje= ct:=20 RE: soldering pad tips...

    Hi Kareem
     
    I am assuming that you are removing a component from = the=20 circuit board.  The circular or square pad surrounds a hole = drilled=20 through the circuit board.  The sides of the hole are plated = with=20 metal.  The component lead passes through the hole and solder = fastens=20 it to the pad on either side of the board and to the plating on = the sides=20 of the hole.  The pad is actually copper underneath.  = What you=20 see on the surface is a solder coating on the = copper.
     
    The danger with unsoldering components is that the copper = pad=20 substrate may lift off the PCB board if the pad is heated too hot = and/or=20 too long.  If this happens, you are in deep=20 trouble.
     
    If you are real careful, you can heat the component lead, = and when=20 the solder liquifies, gently pull the component lead out through = the=20 hole.  Remove the lead in stages rather than let the pad get = too=20 hot.  Alternatively, you can buy a device called a Soldevac = that uses=20 a brief burst of vacuum to suck molten solder out of the component = lead=20 hole.  If done right, its quick and you are left with a dry = hole=20 which the component will almost fall out of.
     
    Hope I interpreted your question correctly and that this=20 helps.
     
    Ron
     
    -----Original Message-----
    From:=20 psn-l-request@.............. = [mailto:psn-l-request@...............On=20 Behalf Of Kareem
    Sent: Tuesday, February 05, 2002 = 1:41=20 PM
    To: PSN
    Subject: soldering pad=20 tips...

    Hi=20 all,
     
    I'm=20 preparing to unsolder a pad on a circuit board and I'm not = exactly sure=20 where unsolder. If anyone is familiar with electronic circuitry, = please=20 let me know. I seems that I just need to remove the solder from = a=20 particular pad - the only problem is that I'm not certain what = the pad=20 actually looks like. Any links or websites with pictures on how = to=20 unsolder this would be greatly appreciated.
     
     
    Thanks,
     
    Kareem
    =
     
    Subject: Re: soldering pad tips... From: "Charles R. Patton" charles.r.patton@........ Date: Fri, 08 Feb 2002 09:33:01 -0800 Bob Shannon wrote: "So I heated the solder to see what had happened....Guess what? NO DIME." My guess is that the dime went into solution. Dimes were silver which is very soluble in lead/tin (solder.) This is why there are solder alloys with 1 to 2 % silver available for electronics, primarily SMT components which used to commonly use silver terminations, in order to avoid dissolving the termination when the component was soldered on. Charles R. Patton __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: soldering pad tips... From: twleiper@........ Date: Fri, 8 Feb 2002 13:04:57 -0500 Were any of your fellow technicians impaled in the superstructure... or did they briefly show up at places hundreds of miles away? Was the building being energized by large high-voltage generators? Did you here the whup-whup of black helicopter blades overhead? On Fri, 8 Feb 2002 07:22:52 -0800 "bobshannon.org" writes: .....Guess what? NO DIME...the dime was like gone...only solder left....so what in the heck happened...this happened in 1967.. Anyone got a clue? Message
    Were any of your fellow technicians impaled in the superstructure...
    or did they briefly show up at places hundreds of miles away? Was
    the building being energized by large high-voltage generators? Did
    you here the whup-whup of black helicopter blades overhead?
     
    On Fri, 8 Feb 2002 07:22:52 -0800 "bobshannon.org" <earth@...........> writes:
    ....Guess what? NO DIME...the dime was like gone...only solder left.= ....so=20 what in the heck happened...this happened in 1967.. Anyone got a clue?=20
    Subject: Re: soldering pad tips... From: "bobshannon.org" earth@........... Date: Fri, 8 Feb 2002 10:26:19 -0800 MessageI liked whats a dime:-) Tres' Cool....It was indeed an older dime = with high silver concentrate...I sort of figured it melted into the = solder...but that was only a guess that many years ago... I do agree with this one tho': >"My guess is that the dime went into solution. Dimes were silver which >is very soluble in lead/tin (solder.) This is why there are solder >alloys with 1 to 2 % silver available for electronics, primarily SMT >components which used to commonly use silver terminations, in order to >avoid dissolving the termination when the component was soldered on." That is my best guess also...It would be interesting if anyone has an = old silver dime and tried to do this..Mind you I was very young and very bored...so = I left the tip in the bottlecap of solder to heat it up...My original notion came from = when I was a kid...broke a thermometer and the mercury covered my dimes...it was very = interesting...I am sure some others have done that trick...??!! ...and finally this one which I am sure you all read: >Were any of your fellow technicians impaled in the superstructure... >or did they briefly show up at places hundreds of miles away? Was >the building being energized by large high-voltage generators? Did >you here the whup-whup of black helicopter blades overhead? Ha!..We I am a sceptic and have a heavy belief in science... so that = conspiratorial theory was not plausible...My only other notion was that someone saw me do it = and after I left for a service call, melted solder and took dime...but = knowing the other tech...probably not... Thanks guys! Was that one of those really old dimes ... back when they were 95% = sikver ? =20 I suspect that it was still there, but had done a shape shifter trick. =20 Mark New Zealand =20 ps: what's a dime ? Message
    I liked whats a dime:-) Tres' Cool....It was indeed an older dime = with high=20 silver concentrate...I sort of figured it melted into the solder...but = that was=20 only a guess that many years ago...
     
    I do agree with  this one tho':
     
    >"My guess is that the dime went into solution.  Dimes were = silver=20 which
    >is very soluble in lead/tin (solder.)  This is why = there are=20 solder
    >alloys with  1 to 2 % silver available for = electronics,=20 primarily SMT
    >components which used to commonly use silver = terminations,=20 in order to
    >avoid dissolving the termination when the component = was=20 soldered on."
     
    That is my best guess also...It would be interesting if anyone has = an old=20 silver
    dime and tried to do this..Mind you I was very young and very = bored...so I=20 left the tip in
    the bottlecap of solder to heat it up...My original notion came = from when I=20 was a kid...broke
    a thermometer and the mercury covered my dimes...it was very=20 interesting...I am sure some
    others have done that trick...??!!
     
    ..and finally this one which I am sure you all read:
    >Were any of your fellow technicians impaled in the=20 superstructure...
    >or did they briefly show up at places hundreds of miles away? = Was
    >the building being energized by large high-voltage generators?=20 Did
    >you here the whup-whup of black helicopter blades = overhead?
     
    Ha!..We I am a sceptic and have a heavy belief in science... so = that=20 conspiratorial theory
    was not plausible...My only other notion was that someone saw me do = it=20 and
    after I left for a service call, melted solder and took dime...but = knowing=20 the other
    tech...probably not...
    Thanks guys!

    Was that one of those really = old dimes=20 ... back when they were 95% sikver ?
     
    I suspect that it was still = there, but=20 had done a shape shifter trick.
     
    Mark
    New Zealand
     
    ps: what's a dime = ?
     
    Subject: Re: soldering pad tips...& tricks From: meredithlamb meredithlamb@............. Date: Fri, 08 Feb 2002 12:14:49 -0700 "Charles R. Patton" wrote: > Bob Shannon wrote: > "So I heated the solder to see what had happened....Guess what? NO > DIME." > Sounds too me like work place "shinagins" from the co-workers. Remember the "Rubickz" cube puzzle; twist the layers/colors around to get all the colors on one side? Years ago, I noted one fellow co-worker spending hours trying to work out the puzzle. He left on a errand, and the co-worker, got a knife took apart the cube, and snapped it back together with the colors all co-ordinated on the sides. Well....of course the worker who was originally trying to do it, was "absolutely amazed" that his co-worker had worked out the puzzle!....ha. Meredith __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: Sound Files From: "Barry" gbl@....... Date: Sat, 9 Feb 2002 08:44:56 -0800 Hi Arie Chris was mentioning about a way to make seismic files audible. How did you do it? Was the voltage to frequency a product function? Regards Barry __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: soldering pad tips... From: Karl Cunningham karlc@.......... Date: Sat, 09 Feb 2002 08:48:58 -0800 Charles -- Sounds plausible, but I'm not so sure. Some rectifiers used to have silver leads for improved heat sinking, or so the manufacturers said. The leads did have the look of silver and were VERY soft and often tarnished, but they didn't dissolve into the solder (at least not enough that you'd notice). I do know that dissolving of copper into solder is a problem, but only with very fine wire (~#44 & smaller). Anyone care to try the old dime test?1 Karl Cunningham --On Friday, February 08, 2002 09:33 -0800 "Charles R. Patton" wrote: > Bob Shannon wrote: > "So I heated the solder to see what had happened....Guess what? NO > DIME." > > My guess is that the dime went into solution. Dimes were silver which > is very soluble in lead/tin (solder.) This is why there are solder > alloys with 1 to 2 % silver available for electronics, primarily SMT > components which used to commonly use silver terminations, in order to > avoid dissolving the termination when the component was soldered on. > > Charles R. Patton __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: 60Hz Synchronous sampling? From: "ERIC GUINN" GUINNE@........... Date: Sat, 9 Feb 2002 12:50:26 -0500 Hey all. I'm trying to get my ducks in a row for my first LP station with computer logging, and I'm pulling my hair out trying to find an old piece of data. Could someone please help? Where have I heard of a sampling rate of 60Hz (or 30Hz?) which was synchronous and zero-crossing-locked with line frequency to allow elimination of 60Hz and aliases without multiple-pole filters? I think I'd like to replicate this bit of Kung-Fu in my design. Did I just make this up or did Larry or someone publish an article like that? Thanks in advance, Eric Guinn, AC4LS Sevierville, TN __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: Silver & soldering pad tips... From: "Erich Kern" efkern@............. Date: Sat, 9 Feb 2002 11:52:51 -0800 My apologies to those list members who find this somewhat off topic, but some find it interesting. Karl, I agree with Charles that the dime was dissolved in the molten solder. Long ago, I made some small metal sculptures using pre-1964 silver quarters hammered flat then cut into strips with tin shears. Since I didn't have a very hot torch at the time, I used 60-40 solder to start the process, the thin strips of coin silver were partially dissolved in the solder, which raised the melting point of the molten mix, but when finished, enough silver went into solution that the finished product had the characteristic color of silver, which is similar to pure tin in color, but tin doesn't tarnish to black the way silver does. Pre-1964 dimes, quarters and half dollars are 90% silver, 10% copper. Sterling silver is 92.5% silver, 7.5% copper. The leads on older rectifier diodes were silver plated, soft drawn copper, I doubt they were pure silver. Regards, Erich Kern ----- Original Message ----- From: "Karl Cunningham" To: Sent: Saturday, February 09, 2002 8:48 AM Subject: Re: soldering pad tips... Charles -- Sounds plausible, but I'm not so sure. Some rectifiers used to have silver leads for improved heat sinking, or so the manufacturers said. The leads did have the look of silver and were VERY soft and often tarnished, but they didn't dissolve into the solder (at least not enough that you'd notice). I do know that dissolving of copper into solder is a problem, but only with very fine wire (~#44 & smaller). Anyone care to try the old dime test?1 Karl Cunningham --On Friday, February 08, 2002 09:33 -0800 "Charles R. Patton" wrote: > Bob Shannon wrote: > "So I heated the solder to see what had happened....Guess what? NO > DIME." > > My guess is that the dime went into solution. Dimes were silver which > is very soluble in lead/tin (solder.) This is why there are solder > alloys with 1 to 2 % silver available for electronics, primarily SMT > components which used to commonly use silver terminations, in order to > avoid dissolving the termination when the component was soldered on. > > Charles R. Patton __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: 60Hz Synchronous sampling? From: Karl Cunningham karlc@.......... Date: Sat, 09 Feb 2002 13:33:11 -0800 Don't know if this helps, but many older digital voltmeters used line-synchronous dual-slope sampling to prevent this king of aliasing. You may need a multi-pole filter in front of the zero-crossing detector, though. Otherwise, noise on the line near zero crossing will cause phase errors from cycle to cycle, and defeat some of the filtering. Karl Cunningham --On Saturday, February 09, 2002 12:50 -0500 ERIC GUINN wrote: > Hey all. > > I'm trying to get my ducks in a row for my first LP station with computer > logging, and I'm pulling my hair out trying to find an old piece of data. > Could someone please help? Where have I heard of a sampling rate of 60Hz > (or 30Hz?) which was synchronous and zero-crossing-locked with line > frequency to allow elimination of 60Hz and aliases without multiple-pole > filters? I think I'd like to replicate this bit of Kung-Fu in my design. > Did I just make this up or did Larry or someone publish an article like > that? > > Thanks in advance, > Eric Guinn, AC4LS > Sevierville, TN __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: Sound Files From: Arie Verveer ajbv@............ Date: Sun, 10 Feb 2002 09:09:43 +0800 Hi Barry, > Chris was mentioning about a way to make seismic files audible. How did > you do it? Was the voltage to frequency a product function? I used the digital data in a typical "PSN" file. Its easy to do, just remove the header, replace it with the "wave" header and fill data segment with the PSN data (short). To make the sound audible just play back the PSN file at a higher rate. Say, a 10 minute file (600 seconds ) with a sample rate of 50 samples per second would be played back as follows. Maximum upper frequency you require is say 4000 hertz. Samples per second = 50 600 / (4000 / 50) = 7.5 thus the 600 second file will be played back in 7.5 seconds. the data in the audio file is identical to the PSN data. If you want, download the program "Recent" from my web site and convert a few files. About two years ago a chap, converted a months worth of seismic data and converted it to audio. He sold it, on a CD, with all sorts of unusual sounds. It was interesting to hear a large overseas quake followed by the reflections from the earths core. The site is : http://members.iinet.net.au/~ajbv/ Cheers Arie > Chris was mentioning about a way to make seismic files audible. How did > you do it? Was the voltage to frequency a product function? __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: RE: 60Hz Synchronous sampling? From: "David Saum" DSaum@............ Date: Sun, 10 Feb 2002 11:44:32 -0500 You can reject 60Hz if you have control of your a/d sampling rate, or if you can integrate after the a/d. For instance, suppose each of your a/d takes 1ms. The period of 60Hz is 1000/60ms= 16.67ms, so if you can do each of your 1ms a/d separated by 16.67ms you will catch 60Hz interference at the same phase each time and it will appear as a DC component. Another way to do this is to take a 1ms sample every 1ms, and then average each block of 16 or 17 together, so that the 60Hz components approximately average out. Of course neither of these techniques gets rid of noise that is not at 60Hz or a multiple of it. I use a microprocessor with an onboard 16 bit a/d that takes about 1/60sec, so it rejects 60Hz without further fuss. Check your a/d chip data sheet to see if it gives guidance on minimizing 60Hz. Hope this helps, Dave The Inexpensive Seismometer Project http://www.infiltec.com/seismo/ > From: "ERIC GUINN" > Date: Sat, 9 Feb 2002 12:50:26 -0500 > > Hey all. > > I'm trying to get my ducks in a row for my first LP station with computer > logging, and I'm pulling my hair out trying to find an old piece of data. > Could someone please help? Where have I heard of a sampling rate of 60Hz > (or 30Hz?) which was synchronous and zero-crossing-locked with line > frequency to allow elimination of 60Hz and aliases without multiple-pole > filters? I think I'd like to replicate this bit of Kung-Fu in my design. > Did I just make this up or did Larry or someone publish an article like > that? > > Thanks in advance, > Eric Guinn, AC4LS > Sevierville, TN __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: 60Hz Synchronous sampling? From: "Mauro Mariotti" mariotti@......... Date: Sun, 10 Feb 2002 19:42:08 +0100 David, Sorry David, I'm not completely agree on this interpretation. Your clock will never be syncronized with the 60Hz noise, so you will have a resonance signal detected by the a/d and you'll se a very slow signal moving from the minimum to the maximum of the 60Hz noise. This will be more evident if you disconnect your sensor from the amp. Eric says he would syncronize the a/d clock with the 60Hz detecting the zerocrossing phase of the a/d signal with a detector directly connected to the power grid. (I suggest to do so using a optocoupler used picking the signal from the secondary coild of the transformer you use to supply the circuit.) This is correct, but you will MUST sample always at 60Hz or 120 or 30 or 15 or 240 and soo on twice and halfs. This will not save you from other interference source, and in my opinion a good antialias filter and other proper filters will cutoff even 60Hz and others RF signals (spikes, motor noise, interruptors and so on...) Cheers Mauro ----- Original Message ----- From: "David Saum" To: Sent: Sunday, February 10, 2002 5:44 PM Subject: RE: 60Hz Synchronous sampling? > You can reject 60Hz if you have control of your a/d sampling rate, > or if you can integrate after the a/d. For instance, suppose each > of your a/d takes 1ms. The period of 60Hz is 1000/60ms= 16.67ms, > so if you can do each of your 1ms a/d separated by 16.67ms you > will catch 60Hz interference at the same phase each time and it will > appear as a DC component. Another way to do this is to take > a 1ms sample every 1ms, and then average each block of 16 or 17 together, > so that the 60Hz components approximately average out. Of course > neither of these techniques gets rid of noise that is not at 60Hz > or a multiple of it. I use a microprocessor with an onboard > 16 bit a/d that takes about 1/60sec, so it rejects 60Hz without > further fuss. Check your a/d chip data sheet to see if it gives > guidance on minimizing 60Hz. > > Hope this helps, > > Dave > The Inexpensive Seismometer Project > http://www.infiltec.com/seismo/ > > > From: "ERIC GUINN" > > Date: Sat, 9 Feb 2002 12:50:26 -0500 > > > > Hey all. > > > > I'm trying to get my ducks in a row for my first LP station with computer > > logging, and I'm pulling my hair out trying to find an old piece of data. > > Could someone please help? Where have I heard of a sampling rate of 60Hz > > (or 30Hz?) which was synchronous and zero-crossing-locked with line > > frequency to allow elimination of 60Hz and aliases without multiple-pole > > filters? I think I'd like to replicate this bit of Kung-Fu in my design. > > Did I just make this up or did Larry or someone publish an article like > > that? > > > > Thanks in advance, > > Eric Guinn, AC4LS > > Sevierville, TN > > > __________________________________________________________ > > Public Seismic Network Mailing List (PSN-L) > > To leave this list email PSN-L-REQUEST@.............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. > __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: 60Hz Synchronous sampling? From: ChrisAtUpw@....... Date: Sun, 10 Feb 2002 14:34:53 EST In a message dated 10/02/02, DSaum@............ writes: > You can reject 60Hz if you have control of your a/d sampling rate, > or if you can integrate after the a/d. I used to set up our 12 Bit Integrating A/Ds so that they Integreted for a whole number of mains cycles, to eliminate mains noise almost completely. They gave me 10 SPS without any problems. Another alternative is to include a Twin Tee notch filter set to the mains frequency. They can give >55 dB rejection, which is often good enough. The Set Frequency is 2xPixRxC. You may also find that there is a tiny bit of 120 Hz feedthrough from the rectified AC. Some rectifiers have a snap action turn off which can cause problems. Voltage spikes which are synchronised with the mains can also give trouble. Regards, Chris Chapman In a message dated 10/02/02, DSaum@............ writes:

    You ca n reject 60Hz if you have control of your a/d sampling rate,
    or if you can integrate after the a/d.

          I used to set up our 12 Bit Integrating A/Ds so that they Integreted for a whole numbe r of mains cycles, to eliminate mains noise almost completely. They gave me 10 SPS without any problems.

          Another alternative is to include a Twin Tee notch filter set to the mains frequency. They can give >55 dB rejection, which is often good enough. The Set Frequency is 2xPixRxC. You may also find that there is a tiny bit of 120 Hz feedthrough from the rectified AC. Some rectifiers have a snap action turn off which can cause problems. Vo ltage spikes which are synchronised with the mains can also give trouble.

          Regards,

          Chris Chapman     Subject: homebrew shake table? From: "David Saum" DSaum@............ Date: Mon, 11 Feb 2002 11:27:47 -0500 I am working on some feedback electronics to improve the low frequency response of geophones, and I need some way to test my systems. It looks like a need a "shake table" that can operate in the 0.1 to 10 Hz range. Can anyone help me with a simple (cheap!) design? Thanks, Dave http://www.infiltec.com/seismo/ __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: RE: homebrew shake table? From: "Finke, John" John.Finke@.......... Date: Mon, 11 Feb 2002 11:46:14 -0500 One of the cheapest shake tables I've seen involves a couple of small sheets of plywood (one for the base and one for the actual table), 2-aluminum rods, 2-aluminum pipes, a crankshaft made of a length of wire hanger, and finally a variable speed drill. It works great for kids/displays at school. If I'm not mistaken this was put together by John Lahr and is(was) shown on his website. If you need some more information and can't get it from him, let me know and I will sketch something up. John Finke, P.E., S.E. Jacobs Engineering 314-335-4059 john.finke@.......... -----Original Message----- From: David Saum [mailto:DSaum@............. Sent: Monday, February 11, 2002 10:28 AM To: psn-l@.............. Subject: homebrew shake table? I am working on some feedback electronics to improve the low frequency response of geophones, and I need some way to test my systems. It looks like a need a "shake table" that can operate in the 0.1 to 10 Hz range. Can anyone help me with a simple (cheap!) design? Thanks, Dave http://www.infiltec.com/seismo/ __________________________________________________________ Public Seismic Network Mailing List (PSN-L) ====================================================================================== NOTICE - This message may contain confidential and privileged information that is for the sole use of the intended recipient. Any viewing, copying or distribution of, or reliance on this message is strictly prohibited. If you have received this message in error, please notify us immediately by replying to the message and deleting it from your computer. ============================================================================== __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: homebrew shake table? From: "angel@......... angel@chiriqui.com Date: Mon, 11 Feb 2002 12:03:47 -0500 Hello David, I've been tempted to make one by taking something long and rigid like aircraft honeycomb from Boeing surplus and hinging it at one end and moving the other end; up and down with a small stepper motor with and eccentric on the shaft at the other end. then I could find the amplitude I wanted somewhere on the "rigid board" and the frequency would be controlled by the motor. A basic stamp could do the job. angel Monday, February 11, 2002, 11:27:47 AM, you wrote: DS> I am working on some feedback electronics to DS> improve the low frequency response of geophones, DS> and I need some way to test my systems. DS> It looks like a need a "shake table" that can operate DS> in the 0.1 to 10 Hz range. Can anyone help me DS> with a simple (cheap!) design? DS> Thanks, DS> Dave DS> http://www.infiltec.com/seismo/ DS> __________________________________________________________ DS> Public Seismic Network Mailing List (PSN-L) DS> To leave this list email PSN-L-REQUEST@.............. with DS> the body of the message (first line only): unsubscribe DS> See http://www.seismicnet.com/maillist.html for more information. -- Best regards, angel mailto:angel@............ __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: 60Hz Synchronous sampling? From: "ERIC GUINN" GUINNE@........... Date: Tue, 12 Feb 2002 00:13:45 -0500 Thanks Karl, Dave, Mauro, Chris. You've given me plenty of good suggestions! It sounds like good filtering and shielding can do more than synchronous sampling. I'll let you know how it works out. (IF I ever finish this project!) Thanks again, Eric Guinn, AC4LS Sevierville, TN. __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: RE: homebrew shake table? From: The Lahrs johnjan@........ Date: Tue, 12 Feb 2002 20:06:23 -0700 I don't think my shake table design would work well for low amplitudes and low frequencies. It's good for shaking down model buildings and things like that. How about using a piezoelectric crystal under the edge of a stiff board. A low frequency electrical signal would drive the crystal. Cheers, John At 09:46 AM 2/11/2002, you wrote: >One of the cheapest shake tables I've seen involves a couple of small sheets >of plywood (one for the base and one for the actual table), 2-aluminum rods, >2-aluminum pipes, a crankshaft made of a length of wire hanger, and finally >a variable speed drill. It works great for kids/displays at school. If I'm >not mistaken this was put together by John Lahr and is(was) shown on his >website. __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: AD From: The Lahrs johnjan@........ Date: Tue, 12 Feb 2002 20:27:50 -0700 I would like to find a source for an AD to replace the DATAQ DI 151RS that is not made any longer! At $99 this AD was a reasonable deal. At $150 their new AD is not. Specifications needed: sample rate: 1 to 240 Hz AD sensitivity: 12 bit, +/- 10 Volt maximum output: connect to serial port of PC power: from PC serial port price: $99 maximum ($50 preferred!) It seems that this should be possible with relatively few components, as AD's are getting ever more integrated. If nothing is available commercially, then a design for such an AD would be second choice. John __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: kilauea awaking? From: ian ian@........... Date: Tue, 12 Feb 2002 17:38:19 -1000 Hi, 5 quakes so far today on Kilauea volcano, hawaii. Hope nothing is afoot... Ian Smith http://iasmith.com/quakes.htm __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: A/D From: ChrisAtUpw@....... Date: Wed, 13 Feb 2002 07:21:14 EST In a message dated 13/02/02, johnjan@........ writes: > I would like to find a source for an AD to replace the DATAQ > DI 151RS that is not made any longer! At $99 this AD was > a reasonable deal. At $150 their new AD is not. > > Specifications needed: > > sample rate: 1 to 240 Hz > AD sensitivity: 12 bit, +/- 10 Volt maximum > output: connect to serial port of PC > power: from PC serial port > price: $99 maximum ($50 preferred!) John, What do you want to do with it? You did not say how many channels you required? Thurlby at http://www.tti-test.com/ do the VPS10 4 ch 12 bit 10 microSec @$135 Pico seem to want far too much http://www.picotech.com/ I think that they effectively charge for the 'free' software in their module prices. We really need someone to design a Kit boards that work with the free software available!! Regards, Chris Chapman In a message dated 13/02/02, johnjan@........ writes:

    I woul d like to find a source for an AD to replace the DATAQ
    DI 151RS that is not made any longer!  At $99 this AD was
    a reasonable deal.  At $150 their new AD is not.

    Specifications needed:

    sample rate:  1 to 240 Hz
    AD sensitivity:  12 bit, +/- 10 Volt maximum
    output: connect to serial port of PC
    power: from PC serial port
    price: $99 maximum ($50 preferred!)

    John,

          What do you want to do with it?
          You did not say how many channels you required?

          Thurlby at http://www.tti-test.com/ do the VPS10 4 ch 12 bit 10 microSec @$135

          Pico seem to want far too much http://www.picotech.com/

          I think that they effectively charge for the 'free' software in their module prices.

          We really need someone to design a Kit boards that work with the free software availab le!!

          Regards,

          Chris Chapman     Subject: Re: A/D From: The Lahrs johnjan@........ Date: Wed, 13 Feb 2002 08:28:11 -0700 Hi Chris, What I need is a 1-channel AD for use in schools. The DATAQ DI 151-RS was ideal for school seismometer use, as it could be used with the excellent software provided by DATAQ with the unit or with Alan Jones' AmaSeis software. I would like to see developed a very simple seismometer for classroom use that when combined with an AD and AmaSeis would register teleseisms from around the world. If the cost of the entire package (seismometer, amplifier, AD) can be kept under $150, then this instrument could be proposed for use in the Globe program. http://www.globe.gov/ The GLOBE Program - Students and teachers from over 3500 schools in 51 countries work with research scientists to learn more about our planet. Students make and submit environmental observations via the Internet. Scientists use GLOBE data in their research and provide feedback to the students to enrich their science education and post student data sets daily on the WWW. A lot of compromises may be required to get the price so low, but I think it's possible. A minimal school instrument need not be exactly linear nor calibrated. Need not be stable for months at a time. Need not be sensitive to only one component of ground motion. Need not have a pendulum period longer than 8 seconds - as an amplifier/filter combination will still be able to pull out surface waves at periods of 15 to 20 seconds, as is done with the AS1 instrument. The other purpose for the AD is to record a small geophone on a table top. That's why the 240 Hz sample rate is specified. This is used in demonstrations, such as for the Table Top Seismology Demonstration. Cheers, John >>Specifications needed: One channel sample rate: 1 to 240 Hz AD sensitivity: 12 bit, +/- 10 Volt maximum output: connect to serial port of PC power: from PC serial port price: $99 maximum ($50 preferred!) >John, > > What do you want to do with it? > You did not say how many channels you required? > > Thurlby at http://www.tti-test.com/ do the VPS10 4 ch 12 bit 10 > microSec @$135 > > Pico seem to want far too much http://www.picotech.com/ > > I think that they effectively charge for the 'free' software in > their module prices. > > We really need someone to design a Kit boards that work with the > free software available!! > > Regards, > > Chris Chapman * John C. and Jan H. Lahr * JohnJan@........ * 1925 Foothills Road * Golden, Colorado 80401-1718 * Phone: (303) 215-9913 * http://lahr.org/john--jan/science.html __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re[2]: A/D From: "angel@......... angel@chiriqui.com Date: Wed, 13 Feb 2002 10:38:25 -0500 Hello John, Wednesday, February 13, 2002, 10:28:11 AM, you wrote: TL> What I need is a 1-channel AD for use in schools. TL> The DATAQ DI 151-RS was ideal for school seismometer use, as TL> it could be used with the excellent software provided by DATAQ TL> with the unit or with Alan Jones' AmaSeis software. I would like TL> to see developed a very simple seismometer for classroom use TL> that when combined with an AD and AmaSeis would register TL> teleseisms from around the world. If the cost of the entire TL> package (seismometer, amplifier, AD) can be kept under $150, TL> then this instrument could be proposed for use in the Globe TL> program. Have you check out David Saum's stuff, I think that you could easily get under the $150 for the whole setup with his amp, adc, filter and a geophone. angel __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: AD From: Gary Thurmond w6str@....... Date: Wed, 13 Feb 2002 08:25:03 -0800 Check out the B & B Electronics 232SDA12 RS-232 Data Acquisition Module w/11 12 bit A/D. $59.95 Manual and specs on line at - http://www.bb-elec.com/product.asp?sku=232SDA12&dept_id=83 I have used many of them in different projects at MBARI and they have been very adequate. The included example software makes it easy to do your own Quick Basic program. C and Pascal examples also included. Sampling rate is aprox 120/sec for one channel down to 25/sec for all 11 channels. Also has three bits digital input and output. I'll be using one with my vertical seismometer to collect it's output and enviormental data until I buy one of Larry's. Best Regards, Gary Thurmond http://www.mcn.org/m/w6str/ The Lahrs wrote: > I would like to find a source for an AD to replace the DATAQ > DI 151RS that is not made any longer! At $99 this AD was > a reasonable deal. At $150 their new AD is not. > > Specifications needed: > > sample rate: 1 to 240 Hz > AD sensitivity: 12 bit, +/- 10 Volt maximum > output: connect to serial port of PC > power: from PC serial port > price: $99 maximum ($50 preferred!) > > It seems that this should be possible with relatively few > components, as AD's are getting ever more integrated. > > If nothing is available commercially, then a > design for such an AD would be second choice. > > John > > __________________________________________________________ > > Public Seismic Network Mailing List (PSN-L) > > To leave this list email PSN-L-REQUEST@.............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: RE: homebrew shake table? From: "David Saum" DSaum@............ Date: Wed, 13 Feb 2002 12:46:22 -0500 I bought a $2 piezo speaker from RS, broke it apart to get the element, put it under my geophone, drove it with a few mv of 1 Hz sine wave directly from my function generator, and it works great! Thanks for all the suggestions, Dave http://www.infiltec.com/seismo/ > From: The Lahrs > Date: Tue, 12 Feb 2002 20:06:23 -0700 > > I don't think my shake table design would work well for low amplitudes > and low frequencies. It's good for shaking down model buildings and > things like that. > > How about using a piezoelectric crystal under the edge of a > stiff board. A low frequency electrical signal would drive the > crystal. > > Cheers, > John __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: AD From: "Randall Pratt" randallpratts@.......... Date: Wed, 13 Feb 2002 12:30:18 -0600 John, Check into the MAX 186 or 188 AD chips. I don't know cost right now. They are 12 bit and you can easily connect to the parallel port for input. I am using one and I get +5 volts and Gnd from a game port on the back of the machine. I have also seen some schematics for a couple of newer chips from MAX that look even easier to implement. I'll have to search for their web site and more details. Also search on "Sky and Telescope" which is where I found the original info. Randy ----- Original Message ----- From: "The Lahrs" To: Sent: Tuesday, February 12, 2002 9:27 PM Subject: AD > > I would like to find a source for an AD to replace the DATAQ > DI 151RS that is not made any longer! At $99 this AD was > a reasonable deal. At $150 their new AD is not. > > Specifications needed: > > sample rate: 1 to 240 Hz > AD sensitivity: 12 bit, +/- 10 Volt maximum > output: connect to serial port of PC > power: from PC serial port > price: $99 maximum ($50 preferred!) > > It seems that this should be possible with relatively few > components, as AD's are getting ever more integrated. > > If nothing is available commercially, then a > design for such an AD would be second choice. > > John > > __________________________________________________________ > > Public Seismic Network Mailing List (PSN-L) > > To leave this list email PSN-L-REQUEST@.............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. > __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: RE: A/D From: "Kareem" temp@............. Date: Wed, 13 Feb 2002 20:16:39 -0800 Does anyone know if Radio Shack carries an A-D board or something similar to it? I would like to connect my drum recorder (PS2) to my PC. -----Original Message----- From: psn-l-request@.............. [mailto:psn-l-request@............... On Behalf Of The Lahrs Sent: Wednesday, February 13, 2002 7:28 AM To: psn-l@.............. Subject: Re: A/D Hi Chris, What I need is a 1-channel AD for use in schools. The DATAQ DI 151-RS was ideal for school seismometer use, as it could be used with the excellent software provided by DATAQ with the unit or with Alan Jones' AmaSeis software. I would like to see developed a very simple seismometer for classroom use that when combined with an AD and AmaSeis would register teleseisms from around the world. If the cost of the entire package (seismometer, amplifier, AD) can be kept under $150, then this instrument could be proposed for use in the Globe program. http://www.globe.gov/ The GLOBE Program - Students and teachers from over 3500 schools in 51 countries work with research scientists to learn more about our planet. Students make and submit environmental observations via the Internet. Scientists use GLOBE data in their research and provide feedback to the students to enrich their science education and post student data sets daily on the WWW. A lot of compromises may be required to get the price so low, but I think it's possible. A minimal school instrument need not be exactly linear nor calibrated. Need not be stable for months at a time. Need not be sensitive to only one component of ground motion. Need not have a pendulum period longer than 8 seconds - as an amplifier/filter combination will still be able to pull out surface waves at periods of 15 to 20 seconds, as is done with the AS1 instrument. The other purpose for the AD is to record a small geophone on a table top. That's why the 240 Hz sample rate is specified. This is used in demonstrations, such as for the Table Top Seismology Demonstration. Cheers, John >>Specifications needed: One channel sample rate: 1 to 240 Hz AD sensitivity: 12 bit, +/- 10 Volt maximum output: connect to serial port of PC power: from PC serial port price: $99 maximum ($50 preferred!) >John, > > What do you want to do with it? > You did not say how many channels you required? > > Thurlby at http://www.tti-test.com/ do the VPS10 4 ch 12 bit 10 > microSec @$135 > > Pico seem to want far too much http://www.picotech.com/ > > I think that they effectively charge for the 'free' software in > their module prices. > > We really need someone to design a Kit boards that work with the > free software available!! > > Regards, > > Chris Chapman * John C. and Jan H. Lahr * JohnJan@........ * 1925 Foothills Road * Golden, Colorado 80401-1718 * Phone: (303) 215-9913 * http://lahr.org/john--jan/science.html __________________________________________________________ Public Seismic Network Mailing List (PSN-L) __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: RE: A/D From: The Lahrs johnjan@........ Date: Wed, 13 Feb 2002 22:26:46 -0700 Kareem, Radio Shack used to carry the $100 DATAQ DI-151RS 2-channel AD that connects to the serial port. DATAQ has replaced this with a 4-channel DI-154RS unit that costs $150; however they offer an education discount that brings the price down to $100 again. Their web site states: Special Offer for Educational Facilities We are currently offering the DI-154 at a special rate of 33% off for educational facilities! If you purchase the DI-154 with a purchase order from an educational facility, you will receive this special price. Call 1-800-553-9006 to qualify and to purchase your DI-154! I don't know if Radio Shack will carry the DI-154RS. This is great because it takes the pressure off of finding an alternative AD source. The DI-151RS works with Alan Jones' AmaSeis software and I hope the DI-154RS will also work. Cheers, John PS Thanks everyone for all of the tips on other AD options. I'll keep them in mind. At 09:16 PM 2/13/2002, you wrote: >Does anyone know if Radio Shack carries an A-D board or something >similar to it? I would like to connect my drum recorder (PS2) to my PC. __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Inexpensive AD converters From: "Randall Pratt" randallpratts@.......... Date: Thu, 14 Feb 2002 11:26:27 -0600 Here are some AD links pertaining to the chip I am using with EMON. http://www.radiosky.com/a2dmax.html Circuit I am using with EMON. = RadioSky sells the chip for $18. http://www.radiosky.com/dcla2d.html Simple one channel 12 bit with $15 = chip. http://dbserv.maxim-ic.com/ADCDACRef.cfm Maxim reference material. I currently have my seismometer at the local high school in a 9th grade = classroom. This is the second year I have moved it up there for a 3 -4 = week period. It is in a very bouncy second floor location but last year = we picked up the Seattle quake. The kids get good experience but a = Lehman is not ideal for masses of untrained fingers. Think durability = in your efforts. =20 Randy
    Here are some AD links pertaining to = the chip I am=20 using with EMON.
     
    http://www.radiosky.com/a2dm= ax.html =20 Circuit I am using with EMON.  RadioSky sells the chip for=20 $18.
     
    http://www.radiosky.com/dcla= 2d.html =20 Simple one channel 12 bit with $15 chip.
     
    http://dbserv.maxim-ic.= com/ADCDACRef.cfm =20 Maxim reference material.
     
    I currently have my seismometer at the = local high=20 school in a 9th grade classroom.  This is the second year I have = moved it=20 up there for a 3 -4 week period.  It is in a very bouncy second = floor=20 location but last year we picked up the Seattle quake.  The = kids get=20 good experience but a Lehman is not ideal for masses of untrained=20 fingers.  Think durability in your efforts. 
     
    Randy
    Subject: Re: homebrew shake table? From: "Barry" gbl@....... Date: Thu, 14 Feb 2002 19:35:46 -0800 David et al I did the same with a peizo with the same good result. You can slow it way down with a home brewed sine wave oscillator. I also put it under one of the balancing legs of a horiz seismo and was going to try it with STM's vrdt design.. Regards Barry ----- Original Message ----- From: "David Saum" To: Sent: Wednesday, February 13, 2002 9:46 AM Subject: RE: homebrew shake table? > I bought a $2 piezo speaker from RS, broke > it apart to get the element, put it under my > geophone, drove it with a few mv of 1 Hz > sine wave directly from my function > generator, and it works great! > > Thanks for all the suggestions, > > Dave __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: homebrew shake table? From: ChrisAtUpw@....... Date: Thu, 14 Feb 2002 23:04:51 EST In a message dated 15/02/02, gbl@....... writes: > I did the same with a peizo with the same good result. You can slow it > way down with a home brewed sine wave oscillator. I also put it under one of > the balancing legs of a horiz seismo and was going to try it with STM's vrdt > design. Hi Barry, You can buy really strong chunks of PZT for use replacing gas igniters. They will take several pounds load, but you may need quite large driving voltages. I put a disk of thin rubber over a large loudspeaker, a circle of 1/2" polystyrene sheet on top and the geophone on top of that. The centre of the speaker had an airtight dome. If you also mount a small magnet on the sheet, you can sense the movement with either a coil or a linear Hall chip. Regards, Chris Chapman In a message dated 15/02/02, gbl@....... writes:

      ;  I did the same with a peizo with the same good result. You can slow it
    way down with a home brewed sine wave oscillator. I also put it under one of
    the balancing legs of a horiz seismo and was going to try it with STM's vrdt
    design.
    Hi Barry,

          You can buy really strong chunks of PZT for use replacing gas igniters. They will take several pounds load, but you may need quite large driving voltages.
          I put a disk of thin rubber over a large loudspeaker, a circle of 1/2" polystyrene she et on top and the geophone on top of that. The centre of the speaker had an airtight dome. If you also mount a small magnet on the sheet, you can sense the movement with either a coil or a linear Hall chip.

          Regards,

          Chris Chapman     Subject: 2 ebay auctions From: BOB BARNS royb1@........... Date: Fri, 15 Feb 2002 10:11:18 -0500 Hi, Ebay # 1074461084 is a Sprengnether S-6000 sensor and a VS-1100 recorder. The auction ends 2/21. Ebay # 1705739083 is a Soil Test MD-5 unit. The auction ends 2/21. Caution:"The unit does not power-up--sold asis." Bob __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Historical perspective for hidden science From: Bob Fryer bfryer@............ Date: Sun, 17 Feb 2002 15:59:06 -0800 Hello friends, Tonight -- Sunday, Feb. 17 -- The History Channel offers a series which will provide the discriminating viewer with important insights into the psychology which results in hidden science. The series is about "The Silent Service" -- the U.S. Navy's submarine war against Japan in WW II. The viewer should consider many elements, including: 1) National security; 2) behavior - macho/warrior psychology; 3) behavior - egotism of 'trained scientists' (espec. engineers regarding torpedo problems); 4) behavior - approches to problem solving; 5) developing technologies; and many others. Please share this message. Take care, Bob Fryer -- earthquake WARNING research Animals, People, Scientific Evidence www.earthquakewarning.org __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Best orientation for one Lehman From: "Jan D. Marshall" jandmarshall@............ Date: Mon, 18 Feb 2002 11:05:52 -0700 I live in Nampa Idaho, (near Boise), I am finishing my first Lehman = sensor -- would a NS orientation probably be the best fpr the first = one?? Jan D. Marshall WB7COX Nampa, Idaho jandmarshall@............ www.cableone.net/jandmarshall
    I live in Nampa Idaho, (near Boise), I = am finishing=20 my first Lehman sensor -- would a NS orientation probably be the best = fpr the=20 first one??
     
    Jan D. Marshall
    WB7COX
    Nampa, = Idaho
    jandmarshall@............www.cableone.net/jandmarsha= ll
    Subject: Re: Best orientation for one Lehman From: "angel@......... angel@chiriqui.com Date: Mon, 18 Feb 2002 21:45:49 -0500 Hello Jan, Yes, Yes!! I think that N/S would be best, that is what I did with my first Lehman. Congratulations on getting it built!! angel Monday, February 18, 2002, 1:05:52 PM, you wrote: JDM> I live in Nampa Idaho, (near Boise), I am finishing my first Lehman sensor -- would a NS orientation probably be the best fpr the first one?? __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: A timely Note From: Raul Alvarez ralvarez@........ Date: Wed, 20 Feb 2002 18:26:07 -0700 Hello All, Received a note on an event you may be interested in: As the clock ticks over from 8:01PM on Wednesday, February 20th, 2002, time will (for sixty seconds only) read in perfect symmetry. To be more precise: 20:02, 20/02, 2002. It is an event which has only happened once before, and is something which will never be repeated. The last occasion that time read in such a symmetrical pattern was long before the days of the digital watch (or the 24-hour clock): 10:01AM, on October 1, 1001. And because the clock only goes up to 23.59, it is something that will never happen again. Raul Alvarez LaEstrellitaObservatory.org __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: A timely Note From: Dave Nelson davenn@.............. Date: Thu, 21 Feb 2002 22:07:23 +1100 Not quite the last time Raul try ....... 2112 2112 2112 yr 2112 day month 2112 (21st dec) 2112 hrs (9:12 pm) cheers Dave > As the clock ticks over from 8:01PM on Wednesday, February 20th, 2002, > time will (for sixty seconds only) read in perfect symmetry. > To be more precise: 20:02, 20/02, 2002. It is an event which has only > happened once before, and is something which will never be repeated. > The last occasion that time read in such a symmetrical pattern was long > before the days of the digital watch (or the 24-hour clock): 10:01AM, >on October 1, 1001. > And because the clock only goes up to 23.59, it is something that will > never happen again. >Raul Alvarez >LaEstrellitaObservatory.org __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Geophone Sensitivity? From: Karl Cunningham karlc@.......... Date: Fri, 22 Feb 2002 13:33:51 -0800 There seem to be more and more local events in Southern California that saturate all my sensors, so I'm planning to connect up a geophone I've had lying around. It's a Geosource MD-105, and says 8Hz, 872 ohms on the case. Does anyone know its sensitivity in V/m/s? Thanks. Karl Cunningham __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: Geophone Sensitivity? From: Doug Crice dcrice@............ Date: Fri, 22 Feb 2002 14:08:54 -0800 I don't have a datasheet for that unit, but I would guess that with a coil resistance that high it's about 1 volt/in/sec +/- 40%. I'll leave the metric conversion as an exercise for the student. Doug Karl Cunningham wrote: > > There seem to be more and more local events in Southern California that > saturate all my sensors, so I'm planning to connect up a geophone I've had > lying around. It's a Geosource MD-105, and says 8Hz, 872 ohms on the case. > Does anyone know its sensitivity in V/m/s? > > Thanks. > > Karl Cunningham > > __________________________________________________________ > > Public Seismic Network Mailing List (PSN-L) > > To leave this list email PSN-L-REQUEST@.............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. -- Doug Crice http://www.georadar.com 19623 Via Escuela Drive phone 408-867-3792 Saratoga, California 95070 USA fax 408-867-4900 __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: FW: volcano websites From: "Bob Hancock" robert.hancock@........... Date: Sun, 24 Feb 2002 21:41:15 -0500 This recently received email on volcanos may be of interest to some PSN folks. Since plate tectonics are the source of not only earthquakes, but also volcanos, there is a lot of overlap in the two fields. The second web site, How Volcanos Works, has several sites with graphics that also covers earthquakes, and also good representation of various faults, and how they slip. The first web site, on volcanic lakes was also of interest. Enjoy.......Bob -----Original Message----- From: VOLCANO [mailto:VOLCANO@.......... Behalf Of Lisa Koenig Sent: Friday, February 22, 2002 11:57 To: VOLCANO@....... Subject: volcano websites Here are announcements for several new websites that may be of interest to volcano subscribers: 1. IAVCEI Commission on Volcanic Lakes 2. How Volcanoes Work 3. Montreal website on volcanoes (in French) 4. language translation ********************************* IAVCEI Commission Volcanic Lakes ********************************* From: Alain Bernard Dear Volcanophiles, The official web site of the IAVCEI Commission of Volcanic lakes is now open at: http://www.ulb.ac.be/sciences/cvl/index.html Enjoy! Alain BERNARD (abernard@.......... Universite Libre de Bruxelles Belgium ********************************* How Volcanoes Work website ********************************* From: Vic Camp For those that may not be familiar with the 'How Volcanoes Work' website, it is a comprehensive educational resource on volcanoes and volcanic processes, geared toward undergraduate and graduate education. The URL is: http://www.geology.sdsu.edu/how_volcanoes_work/ Dr. Vic Camp Department of Geological Sciences San Diego State University San Diego, CA 92182 vcamp@................ ********************************* New Web Site from Montreal ********************************* From: "Hélène Gaonac'h" Dear colleagues, I would like to announce the creation of a new web site about volcanoes and their current activities; it has been on line since February 15 2002. It is in French and is prepared for a general audience. Hence, you may surf in depth or not depending on your interest and basic knowledge. Every month we give information on two distinct volcanic activities or related subjects including internet-links for more details. We want it to be as interactive as possible via paintings, drawings, and soon stories provided by the public. The site is based on the fictional character Vicki Volka who is a dynamic young girl who leaves in Montreal and is very curious about volcanoes around the world. The site is supported by the Université du Québec à Montréal and the research center GEOTOP, as we would like to better strengthen the relationships between the academic research community and the public. If you want to know more about it, click on: http://www.vickivolka.uqam.ca/ Or you may give this address to young people or older ones around you. Hélène Gaonac'h ********************************* Translation Website ********************************* From: Dan Shackelford I just stumbled across the following URL that will translate web pages from one language to another. The reason I mention it, it seems to produce a more readable "machine translation" than other sites I use. Since some of those neat volcano sites I visit are not in English, a web site that translates for me is a useful item. On the theory that others of you on the mailing list might like that capability as well, take a look at: http://www.teletranslator.com:8080/ Hope this helps, Dan ============================================================== To unsubscribe from the volcano list, send the message: signoff volcano to: listserv@........ or write to: volcano-request@........ To contribute to the volcano list, send your message to: volcano@........ ============================================================== __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Connecting the DATAQ... From: "Kareem" temp@............. Date: Tue, 26 Feb 2002 21:39:02 -0800 Can anyone help me with connecting the "output" wires from a PS2 portable recording system to a DATAQ unit? The output wires from the PS2 include the following: 1. Aux. signal Out 2. 60Hz Out 3. Ground I assumed that I connect the 'aux signal out' to the input connector of the DataQ, right? And that I should connect the 'ground' to the ground connector on the DataQ, right? I'm not getting any reading on the DataQ software (oscilloscope view). Can anyone help? Kareem Message
    Can = anyone help me=20 with connecting the "output" wires from a PS2 portable recording system = to a=20 DATAQ unit? The output wires from the PS2 include the=20 following:
    1. = Aux. signal=20 Out
    2. = 60Hz=20 Out
    3.=20 Ground
     
     
    I = assumed that I=20 connect the 'aux signal out' to the input connector of = the DataQ,=20 right?
    And = that I should=20 connect the 'ground' to the ground connector on the DataQ,=20 right? 
     
    I'm = not getting any=20 reading on the DataQ software (oscilloscope view). Can anyone=20 help?
     
     
    Kareem
    Subject: Re: Connecting the DATAQ... From: The Lahrs johnjan@........ Date: Tue, 26 Feb 2002 22:54:41 -0700 Hi Kareem, You can test if the DATAQ is working correctly with it's software by connecting a 1.5 volt battery to the input of one of the channels. You should see the trace deflect from 0 to either +1.5 or -1.5 depending on the polarity of the connection. Once you know that the DATAQ is working correctly, then connect the aux signal out and ground wires. You may need to increase the sensitivity of the DATAQ software (I think the PgUP key does this). When the pen moves on the PS2 you should see some indication on the computer screen. If not, then the aux signal out must be disconnected or the gain is set too low. John At 10:39 PM 2/26/2002, you wrote: >Can anyone help me with connecting the "output" wires from a PS2 portable >recording system to a DATAQ unit? The output wires from the PS2 include >the following: >1. Aux. signal Out >2. 60Hz Out >3. Ground > > >I assumed that I connect the 'aux signal out' to the input connector of >the DataQ, right? >And that I should connect the 'ground' to the ground connector on the >DataQ, right? > >I'm not getting any reading on the DataQ software (oscilloscope view). Can >anyone help? > > >Kareem John C. Lahr 1925 Foothills Road Golden, CO 80402 Phone: (303) 215-9913 john@........ http://lahr.org/john-jan/science.html __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: seismo. on ebay From: BOB BARNS royb1@........... Date: Thu, 28 Feb 2002 20:42:07 -0500 Hi gang, There is an old Navy clockwork seismograph on ebay, # 1078963863. The auction ends 3/7. N. B. Why did the Navy need a seis? Bob __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: seismo. on ebay From: Hammonds hammond@........... Date: Thu, 28 Feb 2002 17:19:20 -0900 Bob, it looks to me as if this is an old recording barometer but it is definitely not a seismograph. Bob Hammond At 04:42 PM 2/28/02, you wrote: >Hi gang, > There is an old Navy clockwork seismograph on ebay, # 1078963863. >The auction ends 3/7. >N. B. Why did the Navy need a seis? >Bob >__________________________________________________________ > >Public Seismic Network Mailing List (PSN-L) > >To leave this list email PSN-L-REQUEST@.............. with >the body of the message (first line only): unsubscribe >See http://www.seismicnet.com/maillist.html for more information. __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: seismo. on ebay From: Raul Alvarez ralvarez@........ Date: Thu, 28 Feb 2002 19:28:18 -0700 Hi Bob and all, Friez made a lot of weather instruments and it they always showing up on ebay. I check ebay often, and it is amazing how many temperature, pressure, and humidity instruments are "seismos" !! 8>) If it has a drum and a pen - it's a seismograph - right??? Raul Alvarez (seismoman on ebay!!) Hammonds wrote: > Bob, it looks to me as if this is an old recording barometer but it is > definitely not a seismograph. > > Bob Hammond > > At 04:42 PM 2/28/02, you wrote: > >Hi gang, > > There is an old Navy clockwork seismograph on ebay, # 1078963863. > >The auction ends 3/7. > >N. B. Why did the Navy need a seis? > >Bob > >__________________________________________________________ > > > >Public Seismic Network Mailing List (PSN-L) > > > >To leave this list email PSN-L-REQUEST@.............. with > >the body of the message (first line only): unsubscribe > >See http://www.seismicnet.com/maillist.html for more information. > > __________________________________________________________ > > Public Seismic Network Mailing List (PSN-L) > > To leave this list email PSN-L-REQUEST@.............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: seismo. on ebay From: Dave Nelson davenn@.............. Date: Sat, 02 Mar 2002 01:06:23 +1100 At 07:28 PM 2/28/02 -0700, you wrote: >Hi Bob and all, > >If it has a drum and a pen - it's a seismograph - right??? >Raul Alvarez Not necessiarly.... many of the older analog barometers were drum and paper units i used to fondly admire the one at my local airport met office when i was a young kid cheers Dave __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: seismo. on ebay From: Raul Alvarez ralvarez@........ Date: Fri, 01 Mar 2002 08:46:43 -0700 Hi Dave, Sorry, my statement was meant as a joke! Yes, I have a collection of such weather instruments. I was implying how so many people think about drums and pens when selling on ebay. Raul Dave Nelson wrote: > At 07:28 PM 2/28/02 -0700, you wrote: > >Hi Bob and all, > > > >If it has a drum and a pen - it's a seismograph - right??? > >Raul Alvarez > > Not necessiarly.... many of the older analog barometers were drum and > paper units i used to fondly admire the one at my local airport met > office when i was a young kid > > cheers > Dave > > __________________________________________________________ > > Public Seismic Network Mailing List (PSN-L) > > To leave this list email PSN-L-REQUEST@.............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Recording thermoeter info? From: "Larry Conklin" lconklin@............ Date: Fri, 1 Mar 2002 11:16:24 -0500 I have an old Taylor insruments recording thermometer. It works fine, but somewhere along the line the mechanical linkage that drive the pen arm got loosened up and the thing is out of calibration. There are three separate adjustments in the linkange, and I can't find a combination that results in the correct temperature reading and the proper scale factor (amount of movement per degree of temperature change). Evidently the company is no longer in business? I wasn't able to find any info on them when I did a search of the net. I wonder if anyone has one of these things and still has any sort of manual that explains the proper calibration procedure? Larry Conklin lconklin@............ __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: RE: Recording thermoeter info? From: "Osterwald, Ray" Ray.Osterwald@.............. Date: Fri, 1 Mar 2002 09:36:27 -0700 Larry I'll bet you would eventually find the instruction book on ebay....do a search, and then save the search in "my ebay" and the system will notify you when it shows up. I found both correct manuals for my K&E Cooke radio slide rule this way. Best Regards, Ray Osterwald -----Original Message----- From: Larry Conklin [mailto:lconklin@............. Sent: Friday, March 01, 2002 9:16 AM To: PSN List Subject: Recording thermoeter info? I have an old Taylor insruments recording thermometer. It works fine, but somewhere along the line the mechanical linkage that drive the pen arm got loosened up and the thing is out of calibration. There are three separate adjustments in the linkange, and I can't find a combination that results in the correct temperature reading and the proper scale factor (amount of movement per degree of temperature change). Evidently the company is no longer in business? I wasn't able to find any info on them when I did a search of the net. I wonder if anyone has one of these things and still has any sort of manual that explains the proper calibration procedure? Larry Conklin lconklin@............ __________________________________________________________ Public Seismic Network Mailing List (PSN-L) __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Fw: Sean-Thomas Morrissey From: "Larry Cochrane" cochrane@.............. Date: Tue, 5 Mar 2002 14:44:50 -0800 All, I have some sad news to forward to the group. Yesterday Chris Chapman forwarded too me some email from a co-worker of Sean-Thomas Morrissey. Below are the emails. Unfortunately it doesn't look good.... > Subj: Re: Enquirey after Sean Thomas Morrissey > Date: 30/01/02 17:01:07 GMT Standard Time > From: Laurie Hausmann > To: Chris > Hi, Chris! > Thanks for asking about Sean Morrissey. I really should have written > to you all before but have been too busy. A bad excuse, I know! > Sean was released from the hospital on Sept. 5, after having been > there for 3 months. Two weeks after that, he went to California to stay with > family. The hope was that he would be able to return to St. Louis in a few > months, close out the small farm he rents here, and then either get a small > place here or move to California to be closer to relatives. > Unfortunately, he is not recovering as well as we'd hoped. He has a > prosthesis (his left leg was amputated below the knee due to diabetic > complications) and is able to walk on it, but is very, very frail. At this > time, he still is not able to live without assistance. His family hopes to > get him to move to a trailer on his sister's property in > Redding, CA (he is with his mother now in McKinleyville, CA) --- it is very > unlikely that he could ever return to St. Louis. His job at the University > was terminated when he went on disability. However, his school seismograph > project still technically lives and is considered to be his project > whatever --- but the pieces of it are in St. Louis, and at this point, he's > not able to work on it anyway. Perhaps someday he will be able to work on it > again --- I will pack it and ship it to California if he wants it. > He has not looked at his email since he went into the hospital in early > June, nor is he getting email in California. > I wish there was good news I could give you, but it really isn't very > good. Hopefully he will improve and will get back to work on his project > and get back with the PSN net beforre long --- I know he really enjoyed it. > Laurie > > Subj: Re: Enquiry after Sean Thomas Morrissey > Date: 04/03/02 20:02:02 GMT Standard Time > From: Laurie Hausmann > To: Chris > Dear Chris, > I wanted to let you know that Sean Morrissey has now entered a nursing > home. It is past the stage of miracles, and we don't expect him to recover > to where he could live independently again. > Could you ask the list owner of the psn list to remove his name, > please? He hasn't even looked at email since he went into the hospital last > summer, and it's obvious he isn't looking at it now. > If anyone has any questions, they can contact me directly. > Thanks! > Laurie Hausmann > hausmann@........... > ----- Original Message ----- From: Laurie Hausmann To: Larry Cochrane Sent: Tuesday, March 05, 2002 4:26 AM Subject: Re: Sean-Thomas Morrissey > Dear Larry, > > Please, go ahead and post my message to the list. I'm sure everyone is > wondering what has happened to Sean. Honestly, he didn't even check his > email after he got out of the hospital --- it was too overwhelming for > him and his concentration level never has come back to what it was. > > I'll also let you know if anything happens. When I talked with his mom > yesterday, she's figuring on days to weeks left --- but as stubborn as > Sean is, you never know! > > Laurie -Larry Cochrane Redwood City, PSN __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: Sean-Thomas Morrissey From: "bobshannon.org" earth@........... Date: Tue, 5 Mar 2002 15:58:30 -0800 Larry etal; What can we do to help out in this situation? I have no facilities but am blessed with a few dollars....and maybe a bit of common sense.....What would you suggest for us to do? Bob Shannon Pinpoint ----- Original Message ----- From: Larry Cochrane To: Sent: Tuesday, March 05, 2002 2:44 PM Subject: Fw: Sean-Thomas Morrissey > All, > > I have some sad news to forward to the group. Yesterday Chris Chapman > forwarded too me some email from a co-worker of Sean-Thomas Morrissey. Below > are the emails. Unfortunately it doesn't look good.... . __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: Sean-Thomas Morrissey From: dave dalex@........... Date: Tue, 05 Mar 2002 18:36:25 -0800 if he is in a rest home, one thing of value would be snailmail letters to sean. something to cheer him up i know it is harder to do then e-mail but he isn't seeing e-mail. dave alexander "bobshannon.org" wrote: > > Larry etal; > What can we do to help out in this situation? I have no facilities but > am blessed with a few dollars....and maybe a bit of common sense.....What > would you suggest for us to do? > > Bob Shannon Pinpoint > > ----- Original Message ----- > From: Larry Cochrane > To: > Sent: Tuesday, March 05, 2002 2:44 PM > Subject: Fw: Sean-Thomas Morrissey > > > All, > > > > I have some sad news to forward to the group. Yesterday Chris Chapman > > forwarded too me some email from a co-worker of Sean-Thomas Morrissey. > Below > > are the emails. Unfortunately it doesn't look good.... > . > > __________________________________________________________ > > Public Seismic Network Mailing List (PSN-L) > > To leave this list email PSN-L-REQUEST@.............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: Fw: Sean-Thomas Morrissey From: Jan Froom Froom@............. Date: Tue, 05 Mar 2002 19:03:25 -0800 The only Morrissey I can fine in McKinleyville, CA is: T G Morrissey 707-839-8643 1750 Oakdale Dr Mckinleyville, CA 95519 But rather than a gazillion of us calling, I think we should limit to.... say.... Larry. Larry Cochrane wrote: > All, > > I have some sad news to forward to the group. Yesterday Chris Chapman > forwarded too me some email from a co-worker of Sean-Thomas Morrissey. Below > are the emails. Unfortunately it doesn't look good.... __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Update on Sean-Thomas Morrissey From: "Larry Cochrane" cochrane@.............. Date: Thu, 7 Mar 2002 12:08:18 -0800 All, I have some sad news to pass on. I just received an email from Laurie Hausmann. Sean died last night. He will be greatly missed. -Larry Cochrane Redwood City, PSN __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: Sean-Thomas Morrissey From: John Hernlund hernlund@............ Date: Thu, 07 Mar 2002 13:02:11 -0800 "bobshannon.org" wrote: > Larry etal; > What can we do to help out in this situation? I have no facilities but > am blessed with a few dollars....and maybe a bit of common sense.....What > would you suggest for us to do? > > Bob Shannon Pinpoint Perhaps a contribution to the American Diabetes Association? John Hernlund Department of Earth and Space Sciences University of California, Los Angeles http://geodyn.ess.ucla.edu/~hernlund/ hernlund@............ __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: Sean-Thomas Morrissey From: CapAAVSO@....... Date: Thu, 7 Mar 2002 17:00:21 EST In a message dated 03/07/2002 4:02:31 PM Eastern Standard Time, hernlund@............ writes: << "bobshannon.org" wrote: > Larry etal; > What can we do to help out in this situation? I have no facilities but > am blessed with a few dollars....and maybe a bit of common sense.....What > would you suggest for us to do? > > Bob Shannon Pinpoint >> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Sean - Thomas posted many long letters that answered questions about seismographs and seismology that were asked on PSN. He was an expert who could explain things in a way I found very interesting and useful. If Bob Shannon would publish the Sean - Thomas letters (with the questions they answered) in hard copy I would like to buy a copy and probably others would too. This would be a nice way to remember Sean - Thomas that I believe he would appreciate. Best regards, Cap (Casper Hossfield) __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: Sean-Thomas Morrissey From: "bobshannon.org" earth@........... Date: Thu, 7 Mar 2002 14:09:04 -0800 I am not in a good position to publish at this time, having some serious health problems myself....however I would certainly be willing to help any others who wanted to contribute to this endeavor. My website has many folks interested in this subject. It would be nice if I could post some excepts of a possible upcoming publication. I am more than willing to do what I can....either on the web or off... Bob Shannon Pinpoint __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: Update on Sean-Thomas Morrissey From: Richard Webb dwebb002@............. Date: Thu, 07 Mar 2002 17:34:25 -0500 Perhaps it would help if we were to contact Sean-Thomas' colleague at SLU and see if she could find out the wishes of the family. Then we could make contributions to that cause. Dick Webb At 12:08 PM 3/7/02 -0800, you wrote: >All, > >I have some sad news to pass on. I just received an email from Laurie >Hausmann. Sean died last night. He will be greatly missed. > >-Larry Cochrane >Redwood City, PSN > > >__________________________________________________________ > >Public Seismic Network Mailing List (PSN-L) > >To leave this list email PSN-L-REQUEST@.............. with >the body of the message (first line only): unsubscribe >See http://www.seismicnet.com/maillist.html for more information. __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: Sean-Thomas Morrissey From: Raul Alvarez ralvarez@........ Date: Thu, 07 Mar 2002 15:35:13 -0700 Hello all, To the many who followed Sean's work, you may want to download the work he published at the SLU website. It is difficult to say how long they will keep the data there. Sean, we will all miss you. Raul Alvarez __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: weight of lead From: "Jan D. Marshall" jandmarshall@............ Date: Sat, 9 Mar 2002 18:53:12 -0700 I know I should of asked here before heading to the vast World Wide Web = of filth to find out how much lead weighs per cubic inch so I could make = a 5 pound weight for my Lehman -- but I didn't, and I also didn't find = buried in the vast archives of the listserver either -- so for those = that might want to know now or in the future--- 12 cubic inches of lead weighs right at 5 pounds Jan D. Marshall WB7COX Nampa, Idaho jandmarshall@............ www.cableone.net/jandmarshall
    I know I should of asked here before = heading to the=20 vast World Wide Web of filth to find out how much lead weighs per cubic = inch so=20 I could make a 5 pound weight for my Lehman -- but I didn't, and I also = didn't=20 find buried in the vast archives of the listserver either -- so for = those that=20 might want to know now or in the future---
     
    12 cubic inches of lead weighs right at = 5=20 pounds
     
    Jan D. Marshall
    WB7COX
    Nampa, = Idaho
    jandmarshall@............www.cableone.net/jandmarsha= ll
    Subject: Re: weight of lead From: ChrisAtUpw@....... Date: Sat, 9 Mar 2002 22:08:55 EST In a message dated 10/03/02, jandmarshall@............ writes: > I know I should of asked here before heading to the vast World Wide Web of > filth to find out how much lead weighs per cubic inch so I could make a 5 > Hi there Jan, Enlightenment comes in many ways! Round here, you only have to ask.... Lead weighs 0.408 lb / cu inch ---> 5 lbs = 12.25 cu in For anyone thinking of making a copper plate 'weight', which can be directly damped using a magnetic field, Copper weighs 0.322 lb / cu in. Regards, Chris Chapman In a message dated 10/03/02, jandmarshall@............ writes:

    I know I should of asked here before heading to the vast World Wide Web of filth to find out how much lead weighs per cubic inch so I could make a 5 pound weight for my Lehman


    Hi there Jan,

          Enlightenment comes in many ways! Round here, you only have to ask....

          Lead weighs 0.408 lb / cu inch ---> 5 lbs = 12.25 cu in

          For anyone thinking of making a copper plate 'weight', which can be directly damped us ing a magnetic field,

          Copper weighs 0.322 lb / cu in.

          Regards,

          Chris Chapman     Subject: Smokeing paper From: "Office of Emperor Norton, Bummer and Lazarus" SFQUAKE06@........... Date: Fri, 14 Jun 2002 19:57:38 -0700 Hello all: Can anyone please describe to me the art of smoking paper?=20 No, I do not mean that kind! I mean the kind that was used with the old = mechanical seismic systems. Dave
    Hello all:
     
    Can anyone please describe to me the art of smoking = paper?=20
    No, I do not mean that kind!  I mean the = kind that=20 was used with the old mechanical
    seismic systems.
     
     
    Dave
     
     
     
     
     
    Subject: Re: Smokeing paper From: ChrisAtUpw@....... Date: Sat, 9 Mar 2002 23:28:36 EST In a message dated 10/03/02, SFQUAKE06@........... writes: > Can anyone please describe to me the art of smoking paper? No, I do not mean > that kind! I mean the kind that was used with the old mechanical seismic > Hi Dave, You clamp the paper tightly onto the drum so that it is well in contact all over. Then you make up a wick for a paraffin burner, usually in a bit of copper / brass tube soldered through the lid of an 8 oz tin. Put paraffin in the bottom of the tin and dip in the wick. Light the wick when it gets wet. Adjust the length of the wick with pliers to give a good smoky flame and rotate the paper on the drum in the smoke till it is black all over. You can 'write' on the trace with a pointed scriber or similar. To permanantly fix the eventual trace, carefully remove the paper from the drum and spray THE BACK with hair lacquer so that it is saturated. If you spray the front, you won't have a trace left. You may want to give the front a spray coat after the paper has dried thoroughly. Remember that the spray lacquer may be highly inflammable - keep well away from any flame. Don't forget to put your wife's hair lacquer back exactly where you found it, when you have finished with it. (How do I know? We still 'smoke' barograph traces this way.) Regards, Chris Chapman In a message dated 10/03/02, SFQUAKE06@........... writes:

    Can an yone please describe to me the art of smoking paper? No, I do not mean that kind!  I mean the kind that was used with the old mechanical seismic systems.


    Hi Dave,

          You clamp the paper tightly onto the drum so that it is well in contact all over. Then you make up a wick for a paraffin burner, usually in a bit of copper / brass tube soldered through the lid of an 8 oz tin. Put paraffin in the bottom of the tin and dip in the wick. Light the wick when it gets wet. Adjust the length of the wick with pli ers to give a good smoky flame and rotate the paper on the drum in the smoke till it is black all over. You can 'write' on the trace with a pointed scriber or similar.
          To permanantly fix the eventual trace, carefully remove the paper from the drum and sp ray THE BACK with hair lacquer so that it is saturated. If you spray the front, you won't have a trace left. You may want to gi ve the front a spray coat after the paper has dried thoroughly. Remember that the spray lacquer may be highly inflammable - kee p well away from any flame. Don't forget to put your wife's hair lacquer back exactly where you found it, when you have finishe d with it. (How do I know? We still 'smoke' barograph traces this way.)

          Regards,

          Chris Chapman     Subject: RE: A/D From: "Kareem" temp@............. Date: Sat, 9 Mar 2002 21:54:32 -0800 I have the DATAQ 154-RS, the newer version. I'm not sure how to calibrate it. Can anyone help? I have it connected to a Kinemetrics PS2 system. It's connected to pin "C" of the Ps2. I think that I have it connected properly because if I increase the gain on the PS2 the DataQ software responds. But there signal is not behaving as the pin on the drum is. It seems the pin will continuously move even when the gain is set low. It's not until I increase the gain on the Ps2 all the way to end of the dial, that I begin to actually see the signal in the DataQ software respond. But shouldn't both pin and signal on my screen behave nearly the same? Also I can't get the AmaSeis software to pickup the signal. Any tips? -----Original Message----- From: psn-l-request@.............. [mailto:psn-l-request@............... On Behalf Of The Lahrs Sent: Wednesday, February 13, 2002 7:28 AM To: psn-l@.............. Subject: Re: A/D Hi Chris, What I need is a 1-channel AD for use in schools. The DATAQ DI 151-RS was ideal for school seismometer use, as it could be used with the excellent software provided by DATAQ with the unit or with Alan Jones' AmaSeis software. I would like to see developed a very simple seismometer for classroom use that when combined with an AD and AmaSeis would register teleseisms from around the world. If the cost of the entire package (seismometer, amplifier, AD) can be kept under $150, then this instrument could be proposed for use in the Globe program. http://www.globe.gov/ The GLOBE Program - Students and teachers from over 3500 schools in 51 countries work with research scientists to learn more about our planet. Students make and submit environmental observations via the Internet. Scientists use GLOBE data in their research and provide feedback to the students to enrich their science education and post student data sets daily on the WWW. A lot of compromises may be required to get the price so low, but I think it's possible. A minimal school instrument need not be exactly linear nor calibrated. Need not be stable for months at a time. Need not be sensitive to only one component of ground motion. Need not have a pendulum period longer than 8 seconds - as an amplifier/filter combination will still be able to pull out surface waves at periods of 15 to 20 seconds, as is done with the AS1 instrument. The other purpose for the AD is to record a small geophone on a table top. That's why the 240 Hz sample rate is specified. This is used in demonstrations, such as for the Table Top Seismology Demonstration. Cheers, John >>Specifications needed: One channel sample rate: 1 to 240 Hz AD sensitivity: 12 bit, +/- 10 Volt maximum output: connect to serial port of PC power: from PC serial port price: $99 maximum ($50 preferred!) >John, > > What do you want to do with it? > You did not say how many channels you required? > > Thurlby at http://www.tti-test.com/ do the VPS10 4 ch 12 bit 10 > microSec @$135 > > Pico seem to want far too much http://www.picotech.com/ > > I think that they effectively charge for the 'free' software in > their module prices. > > We really need someone to design a Kit boards that work with the > free software available!! > > Regards, > > Chris Chapman * John C. and Jan H. Lahr * JohnJan@........ * 1925 Foothills Road * Golden, Colorado 80401-1718 * Phone: (303) 215-9913 * http://lahr.org/john--jan/science.html __________________________________________________________ Public Seismic Network Mailing List (PSN-L) __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: Smokeing paper From: "Office of Emperor Norton, Bummer and Lazarus" SFQUAKE06@........... Date: Fri, 14 Jun 2002 22:14:47 -0700 Hello Chris: Thanks for taking the time to answer my question. I had heard somewhere (Scientific American?) that you bubbled natural = gas through benzene and used a flame that was starved for oxygen to get = a good quality of soot. Seems to be a little complicated to try and do that. = I like to keep it simple. Also heard that you can use kerosene. Paraffin? Is that the same thing as methanol? Are you English? The = paraffin that I know of is the stuff that you use in making candles and = canning fruit--- it's a solid. =20 Thanks for the info. =20 Dave (California) =20 In a message dated 10/03/02, SFQUAKE06@........... writes:=20 Can anyone please describe to me the art of smoking paper? No, I do = not mean that kind! I mean the kind that was used with the old = mechanical seismic systems. Hi Dave,=20 You clamp the paper tightly onto the drum so that it is well in = contact all over. Then you make up a wick for a paraffin burner, usually = in a bit of copper / brass tube soldered through the lid of an 8 oz tin. = Put paraffin in the bottom of the tin and dip in the wick. Light the = wick when it gets wet. Adjust the length of the wick with pliers to give = a good smoky flame and rotate the paper on the drum in the smoke till it = is black all over. You can 'write' on the trace with a pointed scriber = or similar.=20 To permanantly fix the eventual trace, carefully remove the = paper from the drum and spray THE BACK with hair lacquer so that it is = saturated. If you spray the front, you won't have a trace left. You may = want to give the front a spray coat after the paper has dried = thoroughly. Remember that the spray lacquer may be highly inflammable - = keep well away from any flame. Don't forget to put your wife's hair = lacquer back exactly where you found it, when you have finished with it. = (How do I know? We still 'smoke' barograph traces this way.)=20 Regards,=20 Chris Chapman=20
     
    Hello Chris:
     
    Thanks for taking the time to answer my=20 question.
    I had heard somewhere (Scientific American?) that = you=20 bubbled natural gas through benzene and used a flame that was starved = for=20 oxygen to get a good
    quality of soot.  Seems to be a little = complicated to=20 try and do that.  I like to keep it simple.  Also heard that = you can=20 use kerosene.
    Paraffin?  Is that the same thing as = methanol? =20 Are you English?  The paraffin that I know of is the stuff that = you use=20 in making candles and canning fruit--- it's a solid.
     
    Thanks for the info.
     
    Dave      = (California)
         
     
     
     
     
    In a = message dated=20 10/03/02, SFQUAKE06@...........=20 writes:

    Can anyone please describe to me the art of smoking = paper? No, I=20 do not mean that kind!  I mean the kind that was used with the = old=20 mechanical seismic systems.


    Hi Dave,=20

          You clamp the paper = tightly onto=20 the drum so that it is well in contact all over. Then you make up a = wick for a=20 paraffin burner, usually in a bit of copper / brass tube soldered = through the=20 lid of an 8 oz tin. Put paraffin in the bottom of the tin and dip in = the wick.=20 Light the wick when it gets wet. Adjust the length of the wick with = pliers to=20 give a good smoky flame and rotate the paper on the drum in the smoke = till it=20 is black all over. You can 'write' on the trace with a pointed scriber = or=20 similar.
          To permanantly fix = the=20 eventual trace, carefully remove the paper from the drum and spray THE = BACK=20 with hair lacquer so that it is saturated. If you spray the front, you = won't=20 have a trace left. You may want to give the front a spray coat after = the paper=20 has dried thoroughly. Remember that the spray lacquer may be highly=20 inflammable - keep well away from any flame. Don't forget to put your = wife's=20 hair lacquer back exactly where you found it, when you have finished = with it.=20 (How do I know? We still 'smoke' barograph traces this way.)=20

          Regards,=20

          Chris Chapman    =20
    Subject: Re: Smoking paper From: "Mark Robinson" mark.robinson@............... Date: Sun, 10 Mar 2002 19:31:03 +1300 > Also heard that you can use kerosene. > Paraffin? What the Americans call paraffin (oil) is known by a good proportion the english speaking world as kerosene. Paraffin wax is used for making candles. Mark Robinson __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: Smokeing paper From: ChrisAtUpw@....... Date: Sun, 10 Mar 2002 08:43:49 EST In a message dated 10/03/02, SFQUAKE06@........... writes: > I had heard somewhere (Scientific American?) that you bubbled natural gas > through benzene and used a flame that was starved for oxygen to get a good > quality of soot. Probably would work, but benzene is very toxic. I have not tried it. > heard that you can use kerosene. > Paraffin? Kerosene = paraffin for your purposes. We used to run vehicle engines on kerosene. Paraffin is used for lamps, indoor heaters etc and is a refined version. Are you English? The paraffin that I know of is the stuff that you use in making > candles and canning fruit--- it's a solid. > Correct. Paraffin wax is a solid used in making candles. Never heard of it used for canning fruit. We use metal tins of about the 8 oz size with a metal lid which fits over the top of the can and maybe 1/4" down the outside. Then we drill a hole in the midddle of the lid and soft solder in about 4" of 1/4" brass tube. You use a bit of wire to pull a length of wick through the tube, leaving enough for a 1 turn coil in the bottom of the can. Sorry for any confusion. Regards, Chris Chapman In a message dated 10/03/02, SFQUAKE06@........... writes:

    I had heard somewhere (Scientific American?) that you bubbled natural gas through benzene and used a flame that was starved for oxyge n to get a good
    quality of soot.


          Probably would work, but benzene is very toxic. I have not tried it.

    Also
    heard that you can use kerosene.
    Paraffin?


           Kerosene = paraffin for your purposes. We used to run vehicle engines on kerosene. Paraffin is used for lamps, indoor heaters etc and i s a refined version.

    Are you English?  The paraffin that I know of is the stuff that you use in making
    candles and canning fruit--- it's a solid.

       Correct. Paraffin wax is a solid used in making candles. Never heard of it used for canning fruit.

       We use metal tins of about the 8 oz size with a metal lid which fits over the top of the can and maybe 1 /4" down the outside. Then we drill a hole in the midddle of the lid and soft solder in about 4" of 1/4" brass tube. You use a bit of wire to pull a length of wick through the tube, leaving enough for a 1 turn coil in the bottom of the can. Sorry for any confusion.

       Regards,

       Chris Chapman
       
          
    Subject: Geotech SL 220 From: "Marchal van Lare" vanlare@............. Date: Sun, 10 Mar 2002 14:44:24 +0100 Hi all, Recently I have bought an used Geotech SL 220, now I would like to use the SL 220, just like my Lehman. So, does anyone have any experience with a horizontal Geotech SL 220 and running it with Larry's filt/amp and 16 bit A/D? If so, please let me know. Thanks in advance, Marchal van Lare The Netherlands __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: RE: A/D From: John & Jan johnjan@........ Date: Sun, 10 Mar 2002 07:16:10 -0700 Hi Kareem, The AmaSeis program that Alan Jones wrote works with the now-unavailable DATAQ 151-RS AD unit. I understand that Alan has agreed to modify the program so that the 154 unit can also be used, but I'm not sure how soon this will happen as I don't think he as a 154 unit to play with yet. When you look at the signal from the PS2 with the 154 AD and the DATAQ software, do you have the gain on the DATAQ display set to it's maximum? The pen and the DATAQ trace should do the same thing, but it may be that when the gain is set high enough for the DATAQ it is too high for the pen. Do you plan on using both at the same time, or just using the DATAQ? The PS2 gain should be set so that when the DATAQ display gain is at the maximum you can just see the background noise. In other words, you want to use up only a few of the available AD counts on the noise so that when a larger signal of interest comes in you have lots of head room left to get a good recording without clipping. I don't have a PS2 or the schematics for one so don't know how amplified the signal is on pin "C." Perhaps someone on the list does. Hope this helps! John At 10:54 PM 3/9/2002, you wrote: >I have the DATAQ 154-RS, the newer version. I'm not sure how to >calibrate it. Can anyone help? I have it connected to a Kinemetrics PS2 >system. It's connected to pin "C" of the Ps2. I think that I have it >connected properly because if I increase the gain on the PS2 the DataQ >software responds. But there signal is not behaving as the pin on the >drum is. It seems the pin will continuously move even when the gain is >set low. It's not until I increase the gain on the Ps2 all the way to >end of the dial, that I begin to actually see the signal in the DataQ >software respond. But shouldn't both pin and signal on my screen behave >nearly the same? Also I can't get the AmaSeis software to pickup the >signal. Any tips? __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: Smokeing paper From: CapAAVSO@....... Date: Sun, 10 Mar 2002 10:51:37 EST In a message dated 03/10/2002 8:44:18 AM Eastern Standard Time, ChrisAtUpw@....... writes: << Correct. Paraffin wax is a solid used in making candles. Never heard of it used for canning fruit. >> It is used on homemade Jam and jelly to keep it from getting moldy. After the jam has cooled in the jar some melted paraffin wax is poured on top, a layer about 2 mm thick, and allowed to harden. Cap __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: RE: weight of lead From: steve hammond shammon1@............. Date: Sun, 10 Mar 2002 09:00:20 -0800 I purchased a 5 pound block of lead at the local hardware store and cast it in a steel surgical tray on a camp stove. The tray had rounded edges in the corners and measured 6 x 4.5 x 1.5-inches. The resulting weight is about 1.25-inches. This URL has a photo of the Lehman and you can see the resulting lead weight. http://pw2.netcom.com/~shammon1/equip.htm Regards, Steve Hammond PSN Aptos, CA -----Original Message----- From: Jan D. Marshall [SMTP:jandmarshall@............. Sent: Saturday, March 09, 2002 5:53 PM To: Sesmic List Server Subject: weight of lead I know I should of asked here before heading to the vast World Wide Web of filth to find out how much lead weighs per cubic inch so I could make a 5 pound weight for my Lehman -- but I didn't, and I also didn't find buried in the vast archives of the listserver either -- so for those that might want to know now or in the future--- 12 cubic inches of lead weighs right at 5 pounds Jan D. Marshall WB7COX Nampa, Idaho jandmarshall@............ www.cableone.net/jandmarshall << File: ATT00001.html >> __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: RE: Smokeing paper From: steve hammond shammon1@............. Date: Sun, 10 Mar 2002 09:31:53 -0800 Chris, I happen to have a smoke drum from a seismograph of that period. If this is for some kind of project your working on, I'll be happy to take a picture and email it to you. There is no name on it so I can't tell you the maker or how old it is. However, based on a few pictures I have seen, I guess it to be 1850 - 1900. The drum has a 11-inch diameter and is 6-inches wide. The spokes in the drum are S shaped. The drum has narrow slit in it to feed the ends of 4-inch paper to clamps inside the drum. The steel drum has a waxed paper writing pad affixed to the steel drum to create a flat surface. Regards, Steve Hammond PSN Aptos, CA -----Original Message----- From: ChrisAtUpw@....... [SMTP:ChrisAtUpw@........ Sent: Saturday, March 09, 2002 8:29 PM To: psn-l@.............. Subject: Re: Smokeing paper In a message dated 10/03/02, SFQUAKE06@........... writes: > Can anyone please describe to me the art of smoking paper? No, I do not mean > that kind! I mean the kind that was used with the old mechanical seismic > Hi Dave, You clamp the paper tightly onto the drum so that it is well in contact all over. Then you make up a wick for a paraffin burner, usually in a bit of copper / brass tube soldered through the lid of an 8 oz tin. Put paraffin in the bottom of the tin and dip in the wick. Light the wick when it gets wet. Adjust the length of the wick with pliers to give a good smoky flame and rotate the paper on the drum in the smoke till it is black all over. You can 'write' on the trace with a pointed scriber or similar. To permanantly fix the eventual trace, carefully remove the paper from the drum and spray THE BACK with hair lacquer so that it is saturated. If you spray the front, you won't have a trace left. You may want to give the front a spray coat after the paper has dried thoroughly. Remember that the spray lacquer may be highly inflammable - keep well away from any flame. Don't forget to put your wife's hair lacquer back exactly where you found it, when you have finished with it. (How do I know? We still 'smoke' barograph traces this way.) Regards, Chris Chapman << File: ATT00004.html >> __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: RE: A/D From: "Kareem" temp@............. Date: Sun, 10 Mar 2002 09:33:56 -0800 Hi, Thanks for your reply. I intend on using the just the DATAQ to display the signal behavior. I'm not sure how to in/decrease the gain on the DATAQ software. I'll try to read over the manual more carefully. -----Original Message----- From: psn-l-request@.............. [mailto:psn-l-request@............... On Behalf Of John & Jan Sent: Sunday, March 10, 2002 6:16 AM To: psn-l@.............. Cc: jones@.............................. AlanJones@........... Subject: RE: A/D Hi Kareem, The AmaSeis program that Alan Jones wrote works with the now-unavailable DATAQ 151-RS AD unit. I understand that Alan has agreed to modify the program so that the 154 unit can also be used, but I'm not sure how soon this will happen as I don't think he as a 154 unit to play with yet. When you look at the signal from the PS2 with the 154 AD and the DATAQ software, do you have the gain on the DATAQ display set to it's maximum? The pen and the DATAQ trace should do the same thing, but it may be that when the gain is set high enough for the DATAQ it is too high for the pen. Do you plan on using both at the same time, or just using the DATAQ? The PS2 gain should be set so that when the DATAQ display gain is at the maximum you can just see the background noise. In other words, you want to use up only a few of the available AD counts on the noise so that when a larger signal of interest comes in you have lots of head room left to get a good recording without clipping. I don't have a PS2 or the schematics for one so don't know how amplified the signal is on pin "C." Perhaps someone on the list does. Hope this helps! John At 10:54 PM 3/9/2002, you wrote: >I have the DATAQ 154-RS, the newer version. I'm not sure how to >calibrate it. Can anyone help? I have it connected to a Kinemetrics PS2 >system. It's connected to pin "C" of the Ps2. I think that I have it >connected properly because if I increase the gain on the PS2 the DataQ >software responds. But there signal is not behaving as the pin on the >drum is. It seems the pin will continuously move even when the gain is >set low. It's not until I increase the gain on the Ps2 all the way to >end of the dial, that I begin to actually see the signal in the DataQ >software respond. But shouldn't both pin and signal on my screen behave >nearly the same? Also I can't get the AmaSeis software to pickup the >signal. Any tips? __________________________________________________________ Public Seismic Network Mailing List (PSN-L) __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Geotech SL 220 From: "Marchal van Lare" vanlare@............. Date: Sun, 10 Mar 2002 18:56:40 +0100 Hi all, Recently I have bought an used Geotech SL 220, now I would like to use the SL 220, just like my Lehman. So, does anyone have any experience with a horizontal Geotech SL 220 and running it with Larry's filt/amp and 16 bit A/D? If so, please let me know. Thanks in advance, Marchal van Lare The Netherlands __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: RE: A/D From: John & Jan johnjan@........ Date: Sun, 10 Mar 2002 13:05:14 -0700 I think the PgUp key increases the resolution on the screen when running the software that comes with the DATAQ unit. The actual gain of the AD is fixed. If you need more gain, then you will have to insert an amplifier between the geophone and the AD. John At 10:33 AM 3/10/2002, you wrote: >Hi, >Thanks for your reply. I intend on using the just the DATAQ to display >the signal behavior. I'm not sure how to in/decrease the gain on the >DATAQ software. I'll try to read over the manual more carefully. . __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: A/D From: Stephen & Kathy skmort@.......... Date: Sun, 10 Mar 2002 18:03:33 -0800 Hi Kareem, on the Dataq 150-RS that I use, there are two ranges of sensitivity, which they call "gain". The 10.0 volt and the 0.100 volt; which is found under "edit" then "channel settings",, available only when you are in "set-up" mode. Within those two ranges or gain modes, you can also set the limits,, found under "edit" then "fixed calibration". Since my seismo amp can put out plus and minus 10.0 volts, I've set it to the 10 volt range and have the limits, on that channel, set to plus and minus 10 volts. For the moment, the other channel monitors my GPS time signal and goes from 0 to about .4 volts in pulses. I have that channel also set to the 10 volt range, but the limits are set to plus and minus 1 volt,,, I could have set it to plus one volt and zero. From there, I can use the up and down arrows (not page up and down, on mine that changes the time compression), to zoom in or out the waveform range that is visible on the screen,,, If I use the down arrow I can show up to +/- 40 volts, which has no meaning since the dataq is limited to +/- 10 volt in the first place and my signal electrical limits, (the amp), are set to +/- 10 volts in the second place,, but if I use the up arrow I can zoom in and expand the waveform so that the screen sees the upper and lower limits as +/- 0.313 volts!! On my channel that the limits are set to +/- 1 volt, I can expand the waveform so that the upper and lower range on the screen are +/- 0.0313 volts,, (the so called "gain" is still 10.0 volts, the same as the other channel, but the limits are +/- 1.0 volts). I've never used the 0.100 range but you should be able to see some very small signals at that range!! For my normal recording and viewing, I set the visible range, ("zoom" if you will), to +/- 1.250 volts, if a trace comes in that is off the screen, I simply hit the down arrow to shrink the waveform. I set it at this zoom so that I can monitor the normal background noise. The normal background noise is around +/- 0.050 volts,,, but with storms off the west coast of USA (about 100 miles from my sensor) the background noise can get as high as +/- 0.130 volts! I do have an adjustable gain amplifier between my very crude sensor and my dataq, which is set to approx. 10,000. I probably could have used an amplifier with a gain of 100 and then used the 0.100 range on the dataq for the same visual effect on the screen. One of these days I'll get around to trying it!! Recap: for Dataq DI-150RS there are two range or gain modes, (10.00 and 0.100) within those range modes you can set the range limits, within the range limits, you have 8 zoom levels, (2 up 5 down plus the limit, set by the limit and is either doubled or halved from the limit) In theory you could set the dataq to the 0.100 gain mode,, set the limit to 0.010 and be able to zoom to a full screen range of +/- 0.000313 volts, but you will probably be mostly monitoring the dataq internal offset and or noise!!???? Hope this helps, Stephen PSN Station #55 near Pilot Hill Ca 38.828N 120.979W Kareem wrote: > > I have the DATAQ 154-RS, the newer version. I'm not sure how to > calibrate it. Can anyone help? I have it connected to a Kinemetrics PS2 > system. It's connected to pin "C" of the Ps2. I think that I have it > connected properly because if I increase the gain on the PS2 the DataQ > software responds. But there signal is not behaving as the pin on the > drum is. It seems the pin will continuously move even when the gain is > set low. It's not until I increase the gain on the Ps2 all the way to > end of the dial, that I begin to actually see the signal in the DataQ > software respond. But shouldn't both pin and signal on my screen behave > nearly the same? Also I can't get the AmaSeis software to pickup the > signal. Any tips? > > __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: Geotech SL 220 From: ChrisAtUpw@....... Date: Sun, 10 Mar 2002 21:58:18 EST In a message dated 10/03/02, vanlare@............. writes: > Recently I have bought an used Geotech SL 220, now I would like > to use the SL 220, just like my Lehman. > So, does anyone have any experience with a horizontal Geotech SL 220 > and running it with Larry's filt/amp and 16 bit A/D? > > Marchal van Lare > The Netherlands Hi Marchal, If you go to http://www.geoinstr.com/ and look under accelerometers you should find the 220 listed. It is rated at 2.25 V / g from DC to 50 Hz. Why not ask Geospace for details? Since power supplies are quoted, this does not sound like a simple coil / sensor type of instrument. Regards, Chris Chapman In a message dated 10/03/02, vanlare@............. writes:

    Recent ly I have bought an used Geotech SL 220, now I would like
    to use the SL 220, just like my Lehman.
    So, does anyone have any experience with a horizontal Geotech SL 220
    and running it with Larry's filt/amp and 16 bit A/D?

    Marchal van Lare
    The Netherlands
    Hi Marchal,

          If you go to http://www.geoinstr.com/ and look under accelerometers you should find th e 220 listed. It is rated at 2.25 V / g from DC to 50 Hz. Why not ask Geospace for details? Since power supplies are quoted, th is does not sound like a simple coil / sensor type of instrument.
          
          Regards,

          Chris Chapman            Subject: VB port access question From: Casey J Crane ogzax@........ Date: Thu, 14 Mar 2002 17:22:42 -0800 Hi all, Would someone out there know how I might get to my printer port for data input and output ? I've been used to using my old Quick Basic "inp()" and "Out port,data" functions. But these aren't used in Visual Basic 6. The reason is that I built an A/D convertor and have a program in QB but I want to get the program up to date and spiffy looking. Any ideas ? Thanx, Casey ________________________________________________________________ GET INTERNET ACCESS FROM JUNO! Juno offers FREE or PREMIUM Internet access for less! Join Juno today! For your FREE software, visit: http://dl.www.juno.com/get/web/. __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: VB port access question From: Raul Alvarez ralvarez@........ Date: Thu, 14 Mar 2002 20:07:40 -0700 Hi Casey, I ran into the same problem about a year ago. A super reference and the soultion - I hope - to your question is at Jan Axelson's page at: http://www.lvr.com/ When there see: http://www.lvr.com/parport.htm#Programming for info on VBasic. Hope this is of help. Raul Alvarez www.LaEstrellitaObservatory.org Casey J Crane wrote: > Hi all, > > Would someone out there know how I might get to my printer port > for data input and output ? I've been used to using my old Quick Basic > "inp()" and "Out port,data" functions. But these aren't used in Visual > Basic 6. > > The reason is that I built an A/D convertor and have a program in > QB but I want to get the program up to date and spiffy looking. > > Any ideas ? > > Thanx, Casey > > ________________________________________________________________ > GET INTERNET ACCESS FROM JUNO! > Juno offers FREE or PREMIUM Internet access for less! > Join Juno today! For your FREE software, visit: > http://dl.www.juno.com/get/web/. > __________________________________________________________ > > Public Seismic Network Mailing List (PSN-L) > > To leave this list email PSN-L-REQUEST@.............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: A/D connector From: Karl Cunningham karlc@.......... Date: Fri, 15 Mar 2002 07:49:53 -0800 Could someone tell me which sex is the 37-pin connector on the back of Larry's A/D card (the one that plugs into a computer, not the stand-alone card). I need to pick up a mate to it, and I don't remember which it is. Thanks. Karl Cunningham __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Fw: Save on network resource From: "Francesco" franuc@......... Date: Fri, 15 Mar 2002 21:51:35 +0100 This is my question: I would to save the file directly on my ftp server from Winquake In "file save" options ,I change the directory choosing from "browse" a = network resource, where I added the address (with Id and Pwd of the = administrator). Click the SAVE buttom and it shows this message "enable to save the data = in this directory". It's a mistake of mine, or Winquake doesn't support this feature? Is there another way to save on network? Reagards Francesco
     
    This is my question:
    I would to save the file directly on my = ftp server=20 from Winquake
    In "file save" options ,I change the = directory=20 choosing from "browse" a network resource, where I added the address = (with Id=20 and Pwd of the administrator).
    Click the SAVE buttom and it shows this = message=20 "enable to save the data in this directory".
     
    It's a mistake of mine, or Winquake = doesn't support=20 this feature?
     
    Is there another way to save on=20 network?
     
    Reagards
     
    Francesco
     
     
    Subject: Attn: Additional email address From: "Nick & Sophie Caporossi" nickcap@............. Date: Fri, 15 Mar 2002 22:39:35 -0500 Hi All: I have an additional Email ID: ncaprossi@......... Please forward your Email Id to my yahoo address. Continue to use ncikcap@............. as my Principle Email Address. Thanks Nick
    Hi All:
     
    I have an additional Email = ID:
     
    ncaprossi@.........
     
    Please forward your Email Id to my = yahoo=20 address.
     
     Continue to use ncikcap@............. as=20 my Principle  Email Address.
     
     Thanks
     Nick
    Subject: Moment tensor solutions? From: "Larry Conklin" lconklin@............ Date: Sat, 16 Mar 2002 13:33:04 -0500 A lot of the quake reports issued by the NEIC include moment tensor solutions. Can anyone point me to a source that gives a basic description of how these reports are interpreted? How does one read the "beach balls"? Larry Conklin lconklin@............ __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: Additional email address: Oops Correction From: "Nick & Sophie Caporossi" nickcap@............. Date: Sat, 16 Mar 2002 14:18:44 -0500 Hi All: I must have had a senior Moment: CORRECTION: ncaporossi@......... nickcap@............. Thanks Nick ----- Original Message -----=20 From: Nick & Sophie Caporossi=20 To: Mariann Puccio ; psn-l@.............. ; Joe Pinnola ; nickcap ; = Irene Merrill ; Bob Laney ; Emery L.Spirko ; Jack/Charlene Kovac ; Bill = Jackwicz ; Paige_Mel Grillo ; Beverly Glynn ; Angela Genao ; Jerry = Dougher ; Chief Rabbi Dale ; Larry Cochrane ; Terry Caporossi ; Suzanne = Caporossi ; Paul & Carol Caporossi ; Nik (work) Caporossi ; Nik = Caporossi ; Jim Caporossi (work) ; Jim (Home) Caporossi ; Carol = Caporossi ; Andy Caporossi ; Anne Bartlett ; BOB BARNS=20 Sent: Friday, March 15, 2002 10:39 PM Subject: Attn: Additional email address Hi All: I have an additional Email ID: ncaprossi@......... Please forward your Email Id to my yahoo address. Continue to use ncikcap@............. as my Principle Email Address. Thanks Nick
    Hi All:
     I must have had a senior = Moment:
     
    CORRECTION:
    ncaporossi@.........
     
    nickcap@.............
     
     Thanks
    Nick
    ----- Original Message -----
    From:=20 Nick &=20 Sophie Caporossi
    To: Mariann Puccio ; psn-l@.............. ; Joe = Pinnola ; nickcap ;=20 Irene = Merrill ;=20 Bob = Laney ; Emery = L.Spirko ;=20 Jack/Charlene=20 Kovac ; Bill Jackwicz ; Paige_Mel=20 Grillo ; Beverly Glynn ; Angela = Genao ; Jerry = Dougher ; Chief Rabbi Dale ; Larry=20 Cochrane ; Terry Caporossi ; Suzanne=20 Caporossi ; Paul & Carol Caporossi ; = Nik=20 (work) Caporossi ; Nik Caporossi ; Jim = Caporossi=20 (work) ; Jim (Home) Caporossi ; Carol=20 Caporossi ; Andy Caporossi ; Anne=20 Bartlett ; BOB=20 BARNS
    Sent: Friday, March 15, 2002 = 10:39=20 PM
    Subject: Attn: Additional email = address

    Hi All:
     
    I have an additional Email = ID:
     
    ncaprossi@.........
     
    Please forward your Email Id to my = yahoo=20 address.
     
     Continue to use ncikcap@............. as=20 my Principle  Email Address.
     
     Thanks
     Nick
    Subject: RE: Moment tensor solutions? From: "Bob Hancock" robert.hancock@........... Date: Sat, 16 Mar 2002 16:13:14 -0500 You can find comments about focal mechanism / moment tensor / beach balls at the following sites...... From the USGS http://www.geophys.washington.edu/recenteqs/beachball.html From Dave Nelson's Site http://psn.quake.net/dave/fomec.htm From Charles J. Ammon's Understand Earthquakes - Available through St. Lous University at the following link - I just tried it and everything to St. Louis Unveristy seem down right now. This is a 14.2 M PDF file - Reference pages 157-162. http://www.eas.slu.edu/People/RBHerrmann/Courses/EASA130/IntroQuakes.Ammon.p df You can also access the course notes for the text book mentioned above from Larry's site, at the following link http://www.eas.slu.edu/People/CJAmmon/HTML/Classes/IntroQuakes/ Under On-line Notes, go to Section III, Faults and Faulting -----Original Message----- From: psn-l-request@.............. [mailto:psn-l-request@................. Behalf Of Larry Conklin Sent: Saturday, March 16, 2002 13:33 To: PSN List Subject: Moment tensor solutions? A lot of the quake reports issued by the NEIC include moment tensor solutions. Can anyone point me to a source that gives a basic description of how these reports are interpreted? How does one read the "beach balls"? Larry Conklin lconklin@............ __________________________________________________________ Public Seismic Network Mailing List (PSN-L) __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: RE: Moment tensor solutions? From: "Bob Hancock" robert.hancock@........... Date: Sat, 16 Mar 2002 16:13:14 -0500 You can find comments about focal mechanism / moment tensor / beach balls at the following sites...... From the USGS http://www.geophys.washington.edu/recenteqs/beachball.html From Dave Nelson's Site http://psn.quake.net/dave/fomec.htm From Charles J. Ammon's Understand Earthquakes - Available through St. Lous University at the following link - I just tried it and everything to St. Louis Unveristy seem down right now. This is a 14.2 M PDF file - Reference pages 157-162. http://www.eas.slu.edu/People/RBHerrmann/Courses/EASA130/IntroQuakes.Ammon.p df You can also access the course notes for the text book mentioned above from Larry's site, at the following link http://www.eas.slu.edu/People/CJAmmon/HTML/Classes/IntroQuakes/ Under On-line Notes, go to Section III, Faults and Faulting -----Original Message----- From: psn-l-request@.............. [mailto:psn-l-request@................. Behalf Of Larry Conklin Sent: Saturday, March 16, 2002 13:33 To: PSN List Subject: Moment tensor solutions? A lot of the quake reports issued by the NEIC include moment tensor solutions. Can anyone point me to a source that gives a basic description of how these reports are interpreted? How does one read the "beach balls"? Larry Conklin lconklin@............ __________________________________________________________ Public Seismic Network Mailing List (PSN-L) __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: Save on network resource From: "Larry Cochrane" cochrane@.............. Date: Sat, 16 Mar 2002 14:04:41 -0800 Francesco, What you should do is map the remote drive as a local drive letter and then use the drive letter rather then the network resource name in WinQuake. After mapping the drive, you should check that you have the proper permissions to create directories and read and write files on the remote drive. You can do this by using Windows Explorer or a DOS box. If you can copy a file to the remote drive and create directories, WinQuake should be able to save event files on the remote disk. Hope this helps.... Regards, Larry Cochrane Redwood City, PSN ----- Original Message ----- From: Francesco To: PSN Sent: Friday, March 15, 2002 12:51 PM Subject: Fw: Save on network resource This is my question: I would to save the file directly on my ftp server from Winquake In "file save" options ,I change the directory choosing from "browse" a network resource, where I added the address (with Id and Pwd of the administrator). Click the SAVE buttom and it shows this message "enable to save the data in this directory". It's a mistake of mine, or Winquake doesn't support this feature? Is there another way to save on network? Reagards Francesco __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Size of screw for GPS Board From: "Jan D. Marshall" jandmarshall@............ Date: Sat, 16 Mar 2002 18:51:43 -0700 Larry -- what size screw do I need to screw into the mounting studs on = the GPS Interface board -- I am having no luck finding a screw that will = thread in. Jan D. Marshall WB7COX Nampa, Idaho jandmarshall@............ www.cableone.net/jandmarshall
    Larry -- what size screw do I need to = screw into=20 the mounting studs on the GPS Interface board -- I am having no luck = finding a=20 screw that will thread in.
     
    Jan D. Marshall
    WB7COX
    Nampa, = Idaho
    jandmarshall@............www.cableone.net/jandmarsha= ll
    Subject: ebay item From: BOB BARNS royb1@........... Date: Sun, 17 Mar 2002 20:18:55 -0500 Hi, There is a Sprengnether seismograph on ebay, # 1084357572, ends 3/23. A Mod. S-6000 seismom. and a VS-1000 recorder "For blast applications." Bob __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: ebay item From: ChrisAtUpw@....... Date: Sun, 17 Mar 2002 20:58:47 EST I think that we have seen this one before. Chris Chapman I think that we have seen this one before.
    Chris Chapman     Subject: Re: Digest from 03/16/2002 00:01:40 From: Bill Steele bill@...................... Date: Mon, 18 Mar 2002 12:33:31 -0800 (PST) Larry, A nice overview on the interpretation of "beach balls" can be found at: http://quake.wr.usgs.gov/recenteqs/beachball.html Bill ******************************************************************** William P. Steele Phone: 206-685-5880 Director of Information Services Pacific Northwest Seismograph Network (PNSN) UW Earth and Space Sciences Box 351310 Seattle, WA 98195-1310 http://www.geophys.washington.edu/SEIS/ bill@.................. ******************************************************************** On Sun, 17 Mar 2002 psn-l-digest-request@.............. wrote: > > .------ ------ ------ ------ ------ ------ ------ ------ ------ ------. > | Message 1 | > '------ ------ ------ ------ ------ ------ ------ ------ ------ ------' > Subject: Moment tensor solutions? > From: "Larry Conklin" > Date: Sat, 16 Mar 2002 13:33:04 -0500 > > A lot of the quake reports issued by the NEIC include moment tensor > solutions. Can anyone point me to a source that gives a basic description > of how these reports are interpreted? How does one read the "beach balls"? > > Larry Conklin > lconklin@............ > > > > .------ ------ ------ ------ ------ ------ ------ ------ ------ ------. > | Message 2 | > '------ ------ ------ ------ ------ ------ ------ ------ ------ ------' > Subject: Re: Additional email address: Oops Correction > From: "Nick & Sophie Caporossi" > Date: Sat, 16 Mar 2002 14:18:44 -0500 > > This is a multi-part message in MIME format. > > ------=_NextPart_000_006E_01C1CCF5.7ADC5B40 > Content-Type: text/plain; > charset="iso-8859-1" > Content-Transfer-Encoding: quoted-printable > > Hi All: > I must have had a senior Moment: > > CORRECTION: > ncaporossi@......... > > nickcap@............. > > Thanks > Nick > ----- Original Message -----=20 > From: Nick & Sophie Caporossi=20 > To: Mariann Puccio ; psn-l@.............. ; Joe Pinnola ; nickcap ; = > Irene Merrill ; Bob Laney ; Emery L.Spirko ; Jack/Charlene Kovac ; Bill = > Jackwicz ; Paige_Mel Grillo ; Beverly Glynn ; Angela Genao ; Jerry = > Dougher ; Chief Rabbi Dale ; Larry Cochrane ; Terry Caporossi ; Suzanne = > Caporossi ; Paul & Carol Caporossi ; Nik (work) Caporossi ; Nik = > Caporossi ; Jim Caporossi (work) ; Jim (Home) Caporossi ; Carol = > Caporossi ; Andy Caporossi ; Anne Bartlett ; BOB BARNS=20 > Sent: Friday, March 15, 2002 10:39 PM > Subject: Attn: Additional email address > > > Hi All: > > I have an additional Email ID: > > ncaprossi@......... > > Please forward your Email Id to my yahoo address. > > Continue to use ncikcap@............. as my Principle Email Address. > > Thanks > Nick > > ------=_NextPart_000_006E_01C1CCF5.7ADC5B40 > Content-Type: text/html; > charset="iso-8859-1" > Content-Transfer-Encoding: quoted-printable > > > > charset=3Diso-8859-1"> > > > > >
    Hi All:
    >
     I must have had a senior = > Moment:
    >
     
    >
    CORRECTION:
    >
    href=3D"mailto:ncaporossi@.........">ncaporossi@......... > >
     
    >
    href=3D"mailto:nickcap@.............">nickcap@............. IV> >
     
    >
     Thanks
    >
    Nick
    >
    style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; = > BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px"> >
    ----- Original Message -----
    > style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: = > black">From:=20 > href=3D"mailto:nickcap@.............">Nick &=20 > Sophie Caporossi
    >
    To: title=3Dmarianndp6@.......... > href=3D"mailto:marianndp6@.......">Mariann Puccio ; title=3Dpsn-l@................. > href=3D"mailto:psn-l@..............">psn-l@.............. ; title=3Djpinnola@......... href=3D"mailto:jpinnola@.........">Joe = > Pinnola ; title=3Dnickcap@............. = > href=3D"mailto:nickcap@.............">nickcap ;=20 > Irene = > Merrill ;=20 > Bob = > Laney ; title=3Dlouis@............ href=3D"mailto:louis@............">Emery = > L.Spirko ;=20 > href=3D"mailto:jackkovac@.........">Jack/Charlene=20 > Kovac ; href=3D"mailto:wjackwicz@.........">Bill Jackwicz ; title=3Dpgrillo@............. = > href=3D"mailto:pgrillo@.............">Paige_Mel=20 > Grillo ; href=3D"mailto:beverly80@................">Beverly Glynn ; title=3Dagenao@.......... href=3D"mailto:agenao@..........">Angela = > Genao ; title=3Djpdougher@....... href=3D"mailto:jpdougher@.......">Jerry = > Dougher ; title=3Dchiefrabbidale@.............. > href=3D"mailto:chiefrabbidale@...........">Chief Rabbi Dale ; title=3Dcochrane@.............. = > href=3D"mailto:cochrane@..............">Larry=20 > Cochrane ; href=3D"mailto:Tca$crdc@..........">Terry Caporossi ; title=3Dsuzanne@.......... href=3D"mailto:suzanne@..........">Suzanne=20 > Caporossi ; href=3D"mailto:pcaporossi@..........">Paul & Carol Caporossi ; = > title=3DNCaporossi@.............. = > href=3D"mailto:NCaporossi@..............">Nik=20 > (work) Caporossi ; href=3D"mailto:neptune@..........">Nik Caporossi ; title=3Djimc@............... href=3D"mailto:jimc@...............">Jim = > Caporossi=20 > (work) ; href=3D"mailto:j_caporossi@.........">Jim (Home) Caporossi ; title=3Dcapoross@............. = > href=3D"mailto:capoross@.............">Carol=20 > Caporossi ; href=3D"mailto:Andyjtcap@.......">Andy Caporossi ; title=3Dbartlet@............. = > href=3D"mailto:bartlet@.............">Anne=20 > Bartlett ; href=3D"mailto:roybar@........">BOB=20 > BARNS
    >
    Sent: Friday, March 15, 2002 = > 10:39=20 > PM
    >
    Subject: Attn: Additional email = > > address
    >

    >
    Hi All:
    >
     
    >
    I have an additional Email = > ID:
    >
     
    >
    = > href=3D"mailto:ncaprossi@.........">ncaprossi@.........
    >
     
    >
    Please forward your Email Id to my = > yahoo=20 > address.
    >
     
    >
     Continue to use href=3D"mailto:ncikcap@.............">ncikcap@............. as=20 > my Principle  Email Address.
    >
     
    >
     Thanks
    >
    size=3D2> Nick
    > > ------=_NextPart_000_006E_01C1CCF5.7ADC5B40-- > > > > .------ ------ ------ ------ ------ ------ ------ ------ ------ ------. > | Message 3 | > '------ ------ ------ ------ ------ ------ ------ ------ ------ ------' > Subject: RE: Moment tensor solutions? > From: "Bob Hancock" > Date: Sat, 16 Mar 2002 16:13:14 -0500 > > You can find comments about focal mechanism / moment tensor / beach balls at > the following sites...... > > >From the USGS > > http://www.geophys.washington.edu/recenteqs/beachball.html > > >From Dave Nelson's Site > > http://psn.quake.net/dave/fomec.htm > > > >From Charles J. Ammon's Understand Earthquakes - Available through St. Lous > University at the following link - I just tried it and everything to St. > Louis Unveristy seem down right now. This is a 14.2 M PDF file - Reference > pages 157-162. > > > http://www.eas.slu.edu/People/RBHerrmann/Courses/EASA130/IntroQuakes.Ammon.p > df > > > You can also access the course notes for the text book mentioned above from > Larry's site, at the following link > > http://www.eas.slu.edu/People/CJAmmon/HTML/Classes/IntroQuakes/ > > Under On-line Notes, go to Section III, Faults and Faulting > > > > > > -----Original Message----- > From: psn-l-request@.............. > [mailto:psn-l-request@................. Behalf Of Larry Conklin > Sent: Saturday, March 16, 2002 13:33 > To: PSN List > Subject: Moment tensor solutions? > > > A lot of the quake reports issued by the NEIC include moment tensor > solutions. Can anyone point me to a source that gives a basic description > of how these reports are interpreted? How does one read the "beach balls"? > > Larry Conklin > lconklin@............ > > __________________________________________________________ > > Public Seismic Network Mailing List (PSN-L) > > To leave this list email PSN-L-REQUEST@.............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. > > > > .------ ------ ------ ------ ------ ------ ------ ------ ------ ------. > | Message 4 | > '------ ------ ------ ------ ------ ------ ------ ------ ------ ------' > Subject: RE: Moment tensor solutions? > From: "Bob Hancock" > Date: Sat, 16 Mar 2002 16:13:14 -0500 > > You can find comments about focal mechanism / moment tensor / beach balls at > the following sites...... > > >From the USGS > > http://www.geophys.washington.edu/recenteqs/beachball.html > > >From Dave Nelson's Site > > http://psn.quake.net/dave/fomec.htm > > > >From Charles J. Ammon's Understand Earthquakes - Available through St. Lous > University at the following link - I just tried it and everything to St. > Louis Unveristy seem down right now. This is a 14.2 M PDF file - Reference > pages 157-162. > > > http://www.eas.slu.edu/People/RBHerrmann/Courses/EASA130/IntroQuakes.Ammon.p > df > > > You can also access the course notes for the text book mentioned above from > Larry's site, at the following link > > http://www.eas.slu.edu/People/CJAmmon/HTML/Classes/IntroQuakes/ > > Under On-line Notes, go to Section III, Faults and Faulting > > > > > > -----Original Message----- > From: psn-l-request@.............. > [mailto:psn-l-request@................. Behalf Of Larry Conklin > Sent: Saturday, March 16, 2002 13:33 > To: PSN List > Subject: Moment tensor solutions? > > > A lot of the quake reports issued by the NEIC include moment tensor > solutions. Can anyone point me to a source that gives a basic description > of how these reports are interpreted? How does one read the "beach balls"? > > Larry Conklin > lconklin@............ > > __________________________________________________________ > > Public Seismic Network Mailing List (PSN-L) > > To leave this list email PSN-L-REQUEST@.............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. > > > > .------ ------ ------ ------ ------ ------ ------ ------ ------ ------. > | Message 5 | > '------ ------ ------ ------ ------ ------ ------ ------ ------ ------' > Subject: Re: Save on network resource > From: "Larry Cochrane" > Date: Sat, 16 Mar 2002 14:04:41 -0800 > > Francesco, > > What you should do is map the remote drive as a local drive letter and then > use the drive letter rather then the network resource name in WinQuake. > After mapping the drive, you should check that you have the proper > permissions to create directories and read and write files on the remote > drive. You can do this by using Windows Explorer or a DOS box. If you can > copy a file to the remote drive and create directories, WinQuake should be > able to save event files on the remote disk. > > Hope this helps.... > > Regards, > Larry Cochrane > Redwood City, PSN > > > ----- Original Message ----- > From: Francesco > To: PSN > Sent: Friday, March 15, 2002 12:51 PM > Subject: Fw: Save on network resource > > This is my question: > I would to save the file directly on my ftp server from Winquake > In "file save" options ,I change the directory choosing from "browse" a > network resource, where I added the address (with Id and Pwd of the > administrator). > Click the SAVE buttom and it shows this message "enable to save the data in > this directory". > > It's a mistake of mine, or Winquake doesn't support this feature? > > Is there another way to save on network? > > Reagards > > Francesco > > > > > .------ ------ ------ ------ ------ ------ ------ ------ ------ ------. > | Message 6 | > '------ ------ ------ ------ ------ ------ ------ ------ ------ ------' > Subject: Size of screw for GPS Board > From: "Jan D. Marshall" > Date: Sat, 16 Mar 2002 18:51:43 -0700 > > This is a multi-part message in MIME format. > > ------=_NextPart_000_0007_01C1CD1B.9D890BE0 > Content-Type: text/plain; > charset="iso-8859-1" > Content-Transfer-Encoding: quoted-printable > > Larry -- what size screw do I need to screw into the mounting studs on = > the GPS Interface board -- I am having no luck finding a screw that will = > thread in. > > Jan D. Marshall > WB7COX > Nampa, Idaho > jandmarshall@............ > www.cableone.net/jandmarshall > > > ------=_NextPart_000_0007_01C1CD1B.9D890BE0 > Content-Type: text/html; > charset="iso-8859-1" > Content-Transfer-Encoding: quoted-printable > > > > charset=3Diso-8859-1"> > > > > >
    Larry -- what size screw do I need to = > screw into=20 > the mounting studs on the GPS Interface board -- I am having no luck = > finding a=20 > screw that will thread in.
    >
     
    >
    Jan D. Marshall
    WB7COX
    Nampa, = > Idaho
    href=3D"mailto:jandmarshall@............">jandmarshall@............ R> href=3D"http://www.cableone.net/jandmarshall">www.cableone.net/jandmarsha= > ll
    > > ------=_NextPart_000_0007_01C1CD1B.9D890BE0-- > > > > __________________________________________________________ > > Public Seismic Network Mailing List (PSN-L) > > To leave this list email PSN-L-DIGEST-REQUEST@.............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. > __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: NEIC crashed?? From: Dave Nelson davenn@.............. Date: Wed, 20 Mar 2002 17:18:20 +1100 hi all, the NEIC server seems to have crashed over the last few days maybe John L. can confirm what has happened to it cheers Dave __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: NEIC crashed?? From: Canie canie@........... Date: Tue, 19 Mar 2002 22:18:53 -0800 I'm getting to this site quite easily: http://wwwneic.cr.usgs.gov/neis/bulletin/bulletin.html Canie At 05:18 PM 3/20/02 +1100, you wrote: >hi all, > the NEIC server seems to have crashed over the last few days > > maybe John L. can confirm what has happened to it > >cheers > >Dave > >__________________________________________________________ > >Public Seismic Network Mailing List (PSN-L) > >To leave this list email PSN-L-REQUEST@.............. with the body of the >message (first line only): unsubscribe >See http://www.seismicnet.com/maillist.html for more information. __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: NEIC crashed?? From: Dave Nelson davenn@.............. Date: Thu, 21 Mar 2002 06:55:12 +1100 At 10:18 PM 3/19/02 -0800, you wrote: >I'm getting to this site quite easily: >http://wwwneic.cr.usgs.gov/neis/bulletin/bulletin.html > >Canie yes Canie, its finally come ok :) (thursday early am aussie time ) but hasnt been for a few days thanks for checking cheers Dave __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Lehman boom mounting From: "Larry Cochrane" cochrane@.............. Date: Tue, 26 Mar 2002 21:01:57 -0800 Hi Everyone, This list sure has been quite....Recently I got an email from someone in Germany. They have a Lehman type seismometer in their school. Their sensor has a unique way of mounting the boom to the frame. The link to their main page is http://www.mgm.monschau.de/seismic/main_en.html and a description of their sensor and how a garden gate horizontal sensor works starts here http://www.mgm.monschau.de/seismic/main_en.html. Regards, Larry Cochrane Redwood City, PSN __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: Lehman boom mounting From: meredithlamb meredithlamb@............. Date: Tue, 26 Mar 2002 23:55:22 -0700 One has to click on the "english" word to initiate seeing the rest. Also from the same web URL from Larry, there is a link of a interesting seismometer "applet" one can enter in various values/changes to see the response: http://www.ifg.tu-clausthal.de/java/seis/seisdemo-d.html Larry Cochrane wrote: > Hi Everyone, > > This list sure has been quite....Recently I got an email from someone in > Germany. They have a Lehman type seismometer in their school. Their sensor > has a unique way of mounting the boom to the frame. The link to their main > page is http://www.mgm.monschau.de/seismic/main_en.html and a description of > their sensor and how a garden gate horizontal sensor works starts here > http://www.mgm.monschau.de/seismic/main_en.html. > > Regards, > Larry Cochrane > Redwood City, PSN > __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: additions to PSN From: Dave Nelson davenn@.............. Date: Sat, 30 Mar 2002 17:13:20 +1100 Hi all, greetings from down under 3 additions to the PSN map and list I finally found time to get them added welcome to David Saum .... Virginia Greg Christenson .... Oklahoma and Jan Marshell ... Idaho enjoy your stay with the PSN group Dave __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Simple VB question ? From: Casey J Crane ogzax@........ Date: Sat, 30 Mar 2002 11:19:23 -0800 Hi all, I know this isn't the exact forum for this question but someone in the PSN always seems to have an answer. I'm experimenting with a simple SG sensor and have built an 8 bit A/D convertor to interface through my Lpt port. I slapped together a Quick Basic program to run it and plot it. Works fine. Now I'm laboring with Visual Basic to achieve better results. But I've hit a snag to which the answer is probably simple though it eludes me. How do I effect a button click while the program is in a loop type subroutine ? Here's the scenario; one Form, two Buttons (Start/Stop) I click the Start button and this sends the program flow to a loop type subroutine. It's a long loop, counting to a few hundred K. While in the loop I cannot click any button. Only until the loop conditions are met and the sub ends. I can't even click the Form Close button. How can I access buttons (or other objects) while the program is pre occupied with these other little tasks ? Any Ideas ? Thanx, Casey ________________________________________________________________ GET INTERNET ACCESS FROM JUNO! Juno offers FREE or PREMIUM Internet access for less! Join Juno today! For your FREE software, visit: http://dl.www.juno.com/get/web/. __________________________________________________________ Public Seismic Network Mailing List (PSN-L) Subject: Re: Simple VB question ? From: "Mauro Mariotti" mariotti@......... Date: Sat, 30 Mar 2002 20:29:58 +0100 Hi Casey, you can use the "Doevents" instruction. This tell to VB to process the event in the FIFO queue of Windows. You can place a "doevents" instruction where you think is better. I suggest to don't perform a doevents as quick as possible but use it very rarely inside your loop. I worked a lot with "seismowin" to these problems. Regards Mauro www.infoeq.it ----- Original Message ----- From: "Casey J Crane" To: Sent: Saturday, March 30, 2002 8:19 PM Subject: Simple VB question ? > > Hi all, > I know this isn't the exact forum for this question but someone > in the PSN always seems to have an answer. > > I'm experimenting with a simple SG sensor and have built an 8 bit > A/D convertor to interface through my Lpt port. I slapped together a > Quick Basic program to run it and plot it. Works fine. Now I'm laboring > with Visual Basic to achieve better results. But I've hit a snag to which > the answer is probably simple though it eludes me. > > How do I effect a button click while the program is in a loop > type subroutine ? > > Here's the scenario; one Form, two Buttons (Start/Stop) I click > the Start button and this sends the program flow to a > loop type subroutine. It's a long loop, counting to a few hundred K. > While in the loop I cannot click any button. Only until the loop > conditions are met and the sub ends. I can't even click the Form Close > button. > > How can I access buttons (or other objects) while the program is > pre occupied with these other little tasks ? > > Any Ideas ? > > Thanx, Casey > > ________________________________________________________________ > GET INTERNET ACCESS FROM JUNO! > Juno offers FREE or PREMIUM Internet access for less! > Join Juno today! For your FREE software, visit: > http://dl.www.juno.com/get/web/. > __________________________________________________________ > > Public Seismic Network Mailing List (PSN-L) > > To leave this list email PSN-L-REQUEST@.............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. > __________________________________________________________ Public Seismic Network Mailing List (PSN-L)