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 emai