From sguccion@outland.dtcc.edu Wed Jul 01 10:10:57 1998 Received: from outland.dtcc.edu (sguccion@outland.dtcc.edu [138.123.12.201]) by tapr.org (8.7.5/8.7.3/1.9) with ESMTP id KAA25616 for ; Wed, 1 Jul 1998 10:10:56 -0500 (CDT) Received: from localhost (sguccion@localhost) by outland.dtcc.edu (8.8.7/8.8.7) with SMTP id LAA00510 for ; Wed, 1 Jul 1998 11:10:50 -0400 (EDT) Date: Wed, 1 Jul 1998 11:10:50 -0400 (EDT) From: Dr Samuel Guccione To: tacgps@tapr.org Subject: Motorola Oncore Board problems Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Please forgive this somewhat off the subject message. I am trying to get a Motorola Oncore board functioning. I am using the software supplied with the board to communicate in binary. I power up the board using my bench supply at 5 volts connected to pin 2 of the boards DIP connector. I read a current of about 200 or so milliamps which seems to agree with the 1.1 watt spec of the Oncore. A Motorola active antenna is connected to the board. I start up the software and it begins the initilization after I answer the two initial questions. The first init does not produce a response so it begins the longer init. However, when it finishes with the longer init, I do not get any response from the board. This is a new Oncore board from TAPR. Anyone have this problem? Does anyone know if the boards from TAPR malfunction and need to be replaced? This is actually a replacement for another that I thought was bad. Should I talk to Motorola about my problem? Sam, K3BY From w5rkn@amsat.org Wed Jul 01 10:57:00 1998 Received: from mail1.realtime.net (mail1.realtime.net [205.238.128.217]) by tapr.org (8.7.5/8.7.3/1.9) with SMTP id KAA28397 for ; Wed, 1 Jul 1998 10:56:58 -0500 (CDT) Received: (qmail 12298 invoked from network); 1 Jul 1998 15:56:56 -0000 Received: from zoom.realtime.net (HELO zoom.bga.com) (root@205.238.128.40) by mail1.realtime.net with SMTP; 1 Jul 1998 15:56:56 -0000 Received: from amsat.org (max3-8.ip.realtime.net [205.238.179.8]) by zoom.bga.com (8.6.12/8.6.12) with ESMTP id KAA02702 for ; Wed, 1 Jul 1998 10:56:53 -0500 Message-ID: <359A5C0C.1BB7ADF8@amsat.org> Date: Wed, 01 Jul 1998 10:55:56 -0500 From: "Ronald G. Parsons" X-Mailer: Mozilla 4.05 [en] (Win95; I) MIME-Version: 1.0 To: tacgps@tapr.org Subject: Re: [TACGPS:1707] Motorola Oncore Board problems References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Besides the obvious of making sure the cabling is corrrect, do you get any response from the Self Test F-key? Can you put a scope on the serial lines and see if any data is going in or out of the Oncore? Ron Dr Samuel Guccione wrote: > > Please forgive this somewhat off the subject message. I am trying to get a > Motorola Oncore board functioning. I am using the software supplied with > the board to communicate in binary. I power up the board using my bench > supply at 5 volts connected to pin 2 of the boards DIP connector. I read > a current of about 200 or so milliamps which seems to agree with the 1.1 > watt spec of the Oncore. > > A Motorola active antenna is connected to the board. I start up the > software and it begins the initilization after I answer the two initial > questions. The first init does not produce a response so it begins the > longer init. However, when it finishes with the longer init, I do not get > any response from the board. > > This is a new Oncore board from TAPR. Anyone have this problem? Does > anyone know if the boards from TAPR malfunction and need to be replaced? > This is actually a replacement for another that I thought was bad. > > Should I talk to Motorola about my problem? > > Sam, K3BY -- Ron Parsons W5RKN From srbible@gate.net Wed Jul 01 12:01:41 1998 Received: from onondaga.gate.net (root@onondaga.gate.net [198.206.134.31]) by tapr.org (8.7.5/8.7.3/1.9) with ESMTP id MAA01731 for ; Wed, 1 Jul 1998 12:01:39 -0500 (CDT) Received: from supply.camcomp.com (ga2-87.camcomp.com [208.5.76.87]) by onondaga.gate.net (8.8.6/8.6.12) with SMTP id MAA88672 for ; Wed, 1 Jul 1998 12:59:56 -0400 Message-Id: <3.0.5.32.19980701130052.0079ccb0@pop.gate.net> X-Sender: srbible@pop.gate.net X-Mailer: QUALCOMM Windows Eudora Light Version 3.0.5 (32) Date: Wed, 01 Jul 1998 13:00:52 -0400 To: tacgps@tapr.org From: "Steven R. Bible" Subject: Re: [TACGPS:1707] Motorola Oncore Board problems In-Reply-To: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" At 10:13 AM 7/1/98 -0500, you wrote: [snip] >This is a new Oncore board from TAPR. Anyone have this problem? Does >anyone know if the boards from TAPR malfunction and need to be replaced? >This is actually a replacement for another that I thought was bad. Sam, try reseting the Oncore with the "default" command. I've had to do this with my Oncores and after 15 minutes should be working. Also try TAC32 to initialize the Oncore just as a second check. >Should I talk to Motorola about my problem? It is possible that the Oncore has failed. This does happen. If you believe after your testing that the Oncore you recently received is bad, call Dorothy at the TAPR Office for an RMA number and we'll gladdly replace the unit. From phk@freebsd.org Wed Jul 01 15:00:30 1998 Received: from ranger.daytonoh.ncr.com ([149.25.31.31]) by tapr.org (8.7.5/8.7.3/1.9) with ESMTP id PAA10734 for ; Wed, 1 Jul 1998 15:00:27 -0500 (CDT) Received: from AOHECDACKERJ.daytonoh.ncr.com ([149.25.29.185]) by ranger.daytonoh.ncr.com (8.8.8/8.8.8) with SMTP id PAA28243 for ; Wed, 1 Jul 1998 15:59:51 -0400 (EDT) Message-Id: <199807011959.PAA28243@ranger.daytonoh.ncr.com> From: john.ackermann@daytonOH.ncr.com (John Ackermann) To: tacgps@tapr.org Subject: (Fwd) State of the art timekeeping, [the promised summary] Date: Wed, 01 Jul 1998 19:51:52 GMT Here's an interesting post from comp.protocols.ntp. John ---------------- From: Poul-Henning Kamp Subject: State of the art timekeeping, [the promised summary] Date: Wed, 01 Jul 1998 15:34:43 +0200 Organization: CyberCity Internet I promised you guys a summary of my work-in-progress presentation at USENIX in New Orleans. Now that I have recovered somewhat from the heat they have down there I'll make good on that promise: I have basically succeeded in making FreeBSD (and any other UNIX which adopts the code in question) able to track any current and likely future source of time signals down to whatever your hardware is capable of. At the USENIX I showed a couple of graphs which proved this point: The first one is from a paper Motorola has published on the performance of their OnCore GPS receiver, in which they hold the GPS against a Cesium for an hour. The second graph was my OnCore unit fed into ntpd and plotting the clockstats file on the same scales. The two curves are for all practical purposes identical, which means that my PC using a Ovenized Xtal for time reference, disciplined with NTPD from the GPS pulse per second signal approaches Cesium performance. The exact setup is this: I have a "VCC Hot1" FPGA prototyping card, in which I have implemented in VHDL a "timecounter" which FreeBSD uses for timekeeping. (A "timecounter" is just a binary counter running from a stable frequency.) This one runs at 90.112 MHz, derived from a $90 surplus OCXO. In the FPGA is also a latch which captures the counter contents when the GPS PPS signal rises. The code I added to FreeBSD keeps track of UTC in 32bit fractions of nanoseconds, and thanks to a few changes here and there, NTPD can exploit this precision fully. This is really the crucial bit: of all the UNIX kernels I know, this is the only one which doesn't do adjustments in 1 microsecond jumps, and consequently the only one which can split the microsecond at this time. The short explanation on this code is that it converts a delta in counter reading to 32bit fractions of nanoseconds using fixed point integer arithmetic, which allows for almost continuous frequency and phase adjustment rather than N microsecond phase-steps every hardclock(), it allows for hardware capturing of time events rather than relying on interrupt based timestamping (which is hampered by half a microsecond jitter or more), finally some changes to the NTP kernel-PLL interface has allowed NTPD to steer the PLL more precisely as well. The current specs for the timecounter code is: * time resolution: 1E-9/2^32 = .232 attoseconds (.232E-18) * frequency adjustment: PPM/2^16 = .000015 PPM = 1.5E-11 * phase adjustment: usec/2^12 = .224 nsec. Needless to say, you can run it directly from the RF output (5, 10 or any other number of MHz) from a primary or secondary frequency standard, no need to take the detour around PPS signals first. I have started knitting a paper about these timecounters, but the source is really easy to understand sys/kern/kern_clock.c in FreeBSD -current if you're interested. The performance right now, determined visually from plots, is better than +/- 50 nanosecond, but since Motorola says their receiver is doing 38nsec with stdev=1, then for all I know, it could be running at the hardware teoretical limit of (+/-1)/90.112MHz. I have only had this running for about a week, so I have not even started doing serious math on the data yet. I will be back ticking away at this after my summer vacation, and I hope to have the paper about all of this ready during the autumn sometime and if I can find a sponsor for my travel, I'll present it as some suitable conference. I have a web-page for this little project: http://phk.freebsd.dk/rover.html which will be updated as I have time&news to share. All sourcecode & scematics are available for free to people who are serious about timekeeping. (Sorry: if you're not going to build this now you'll have to wait for the paper). Many thanks to Dave Mills for invaluable insight and help on the way, (I promise to get that LORAN-C wired up as the next thing!) Poul-Henning PS: sponsor sought for surplus cesium standard! PPS: If you have a UT oncore with software version 1.3 or lower, you need to get an upgrade to remove some software-bug induced jitter from the PPS signal before you will get below ~70nsec. This probably also applies for the VP oncore, but I don't know for what software versions. From jjjohnson@saiph.hpl.hp.com Wed Jul 01 15:44:04 1998 Received: from hplms26.hpl.hp.com (root@hplms26.hpl.hp.com [15.255.168.31]) by tapr.org (8.7.5/8.7.3/1.9) with ESMTP id PAA13038 for ; Wed, 1 Jul 1998 15:43:47 -0500 (CDT) Received: from saiph.hpl.hp.com (saiph.hpl.hp.com [15.9.144.186]) by hplms26.hpl.hp.com (8.8.6/8.8.6 HPLabs Relay) with ESMTP id NAA25141 for ; Wed, 1 Jul 1998 13:43:45 -0700 (PDT) Received: (from jjjohnson@localhost) by saiph.hpl.hp.com (8.8.6/8.8.6 HPLabs) id NAA03766 for tacgps@tapr.org; Wed, 1 Jul 1998 13:43:43 -0700 (PDT) From: "James L. Johnson" Message-Id: <199807012043.NAA03766@saiph.hpl.hp.com> Subject: Re: [TACGPS:1710] (Fwd) State of the art timekeeping, [the promised summary] To: tacgps@tapr.org Date: Wed, 1 Jul 1998 13:43:42 -0800 (PDT) In-Reply-To: <199807011959.PAA28243@ranger.daytonoh.ncr.com> from "John Ackermann" at Jul 1, 98 03:01:45 pm X-Mailer: ELM [version 2.4 PL21] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Robin, There is some Greek in here (gobbledygook?) but there may be something interesting if you can decypher it. Jim ---------------------------------------------------------------------- > > Here's an interesting post from comp.protocols.ntp. > > John > > ---------------- > From: Poul-Henning Kamp > Subject: State of the art timekeeping, [the promised summary] > Date: Wed, 01 Jul 1998 15:34:43 +0200 > Organization: CyberCity Internet > > I promised you guys a summary of my work-in-progress presentation at > USENIX in New Orleans. Now that I have recovered somewhat from the heat > they have down there I'll make good on that promise: > > I have basically succeeded in making FreeBSD (and any other UNIX which > adopts the code in question) able to track any current and likely future > source of time signals down to whatever your hardware is capable of. > > At the USENIX I showed a couple of graphs which proved this point: The > first one is from a paper Motorola has published on the performance of > their OnCore GPS receiver, in which they hold the GPS against a Cesium > for an hour. The second graph was my OnCore unit fed into ntpd and > plotting the clockstats file on the same scales. The two curves are for > all practical purposes identical, which means that my PC using a > Ovenized Xtal for time reference, disciplined with NTPD from the > GPS pulse per second signal approaches Cesium performance. > > The exact setup is this: I have a "VCC Hot1" FPGA prototyping card, in > which I have implemented in VHDL a "timecounter" which FreeBSD uses for > timekeeping. (A "timecounter" is just a binary counter running from a > stable frequency.) This one runs at 90.112 MHz, derived from a $90 > surplus OCXO. In the FPGA is also a latch which captures the counter > contents when the GPS PPS signal rises. > > The code I added to FreeBSD keeps track of UTC in 32bit fractions of > nanoseconds, and thanks to a few changes here and there, NTPD can > exploit this precision fully. This is really the crucial bit: of all > the UNIX kernels I know, this is the only one which doesn't do > adjustments in 1 microsecond jumps, and consequently the only one which > can split the microsecond at this time. > > The short explanation on this code is that it converts a delta in > counter reading to 32bit fractions of nanoseconds using fixed point > integer arithmetic, which allows for almost continuous frequency and > phase adjustment rather than N microsecond phase-steps every > hardclock(), it allows for hardware capturing of time events rather than > relying on interrupt based timestamping (which is hampered by half a > microsecond jitter or more), finally some changes to the > NTP kernel-PLL interface has allowed NTPD to steer the PLL more > precisely as well. > > The current specs for the timecounter code is: > * time resolution: 1E-9/2^32 = .232 attoseconds (.232E-18) > * frequency adjustment: PPM/2^16 = .000015 PPM = 1.5E-11 > * phase adjustment: usec/2^12 = .224 nsec. > > Needless to say, you can run it directly from the RF output (5, 10 or > any other number of MHz) from a primary or secondary frequency standard, > no need to take the detour around PPS signals first. > > I have started knitting a paper about these timecounters, but the source > is really easy to understand sys/kern/kern_clock.c in FreeBSD -current > if you're interested. > > The performance right now, determined visually from plots, is better > than +/- 50 nanosecond, but since Motorola says their receiver is doing > 38nsec with stdev=1, then for all I know, it could be running at the > hardware teoretical limit of (+/-1)/90.112MHz. I have only had this > running for about a week, so I have not even started doing serious math > on the data yet. > > I will be back ticking away at this after my summer vacation, and I hope > to have the paper about all of this ready during the autumn sometime and > if I can find a sponsor for my travel, I'll present it as some suitable > conference. > > I have a web-page for this little project: > http://phk.freebsd.dk/rover.html which will be updated as I have > time&news to share. All sourcecode & scematics are available for free > to people who are serious about timekeeping. (Sorry: if you're not > going to build this now you'll have to wait for the paper). > > Many thanks to Dave Mills for invaluable insight and help on the way, > (I promise to get that LORAN-C wired up as the next thing!) > > Poul-Henning > > PS: sponsor sought for surplus cesium standard! > > PPS: If you have a UT oncore with software version 1.3 or lower, you > need to get an upgrade to remove some software-bug induced jitter from > the PPS signal before you will get below ~70nsec. This probably also > applies for the VP oncore, but I don't know for what software versions. > > From Lester.Veenstra@comsat.com Wed Jul 01 16:14:56 1998 Received: from kato.cws.comsat.com (root@kato.cws.comsat.com [134.133.176.105]) by tapr.org (8.7.5/8.7.3/1.9) with ESMTP id QAA14687 for ; Wed, 1 Jul 1998 16:14:54 -0500 (CDT) From: Lester.Veenstra@comsat.com Received: from smtpgw2.cws.comsat.com (MISNT2.cmc.comsat.com [134.133.178.29]) by kato.cws.comsat.com (8.7.5/8.7.3) with SMTP id RAA04140 for ; Wed, 1 Jul 1998 17:10:45 -0400 (EDT) Received: from ccMail by smtpgw2.cws.comsat.com (IMA Internet Exchange 2.11 Enterprise) id 0008CE4A; Wed, 1 Jul 1998 17:15:10 -0400 Mime-Version: 1.0 Date: Wed, 1 Jul 1998 17:15:14 -0400 Message-ID: <0008CE4A.3332@comsat.com> Subject: HP-107BR To: tacgps@tapr.org Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Content-Description: cc:Mail note part I have a very well aged (+30 years old out of one of the original INTELSAT network earth stations) working crystal freq standard, an HP-107BR. On the back, along with the outputs is a BNC marked "Electrical Freq Control". Looks like a prime candidate for a little frequency disciplining using GPS/TAC. However, I have no manual: Does anyone have any idea what the control interface might be? Tnx Les K1YCM From buoy@redshift.com Thu Jul 02 00:21:13 1998 Received: from mail.redshift.com (redshift.com [209.54.200.6]) by tapr.org (8.7.5/8.7.3/1.9) with ESMTP id AAA27014 for ; Thu, 2 Jul 1998 00:21:10 -0500 (CDT) Received: from buoy.mcktech.com (pm4-186.sal.redshift.com [207.204.198.186]) by mail.redshift.com (8.8.8/8.8.8) with SMTP id WAA21931 for ; Wed, 1 Jul 1998 22:21:06 -0700 Message-ID: <001601bda578$ca07a880$bac6cccf@buoy.mcktech.com> From: "Doug McKinney" To: Subject: Re: [TACGPS:1707] Motorola Oncore Board problems Date: Wed, 1 Jul 1998 22:17:59 -0700 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 4.72.2106.4 X-MimeOLE: Produced By Microsoft MimeOLE V4.72.2106.4 -----Original Message----- From: Dr Samuel Guccione To: tacgps@tapr.org Date: Thursday, July 02, 1998 8:21 AM Subject: [TACGPS:1707] Motorola Oncore Board problems >Please forgive this somewhat off the subject message. I am trying to get a >Motorola Oncore board functioning. I am using the software supplied with >the board to communicate in binary. I power up the board using my bench >supply at 5 volts connected to pin 2 of the boards DIP connector. I read >a current of about 200 or so milliamps which seems to agree with the 1.1 >watt spec of the Oncore. > >A Motorola active antenna is connected to the board. I start up the >software and it begins the initilization after I answer the two initial >questions. The first init does not produce a response so it begins the >longer init. However, when it finishes with the longer init, I do not get >any response from the board. Motorola may ship the VP ONCOREs in any mode. What you are describing is the non-navigating mode called IDLE. The other mode is FIX, which is the Position Fix mode. In addition, the data update rate may also be set to zero. With PC Controller software (which you indicated you have by your startup sequence comment), you can type fix, which will get you in the postion navagation mode and the type ps8 1, which will get you into the 1 postion reporting every 1 second (or ps8 5 for every 5 second update). This should solve your problems. Motorola has had an outstanding performance record and I asked a Rep if he has had any failures and he said no. Therefore, I suspect the startup sequence procedure! 73's Doug > >This is a new Oncore board from TAPR. Anyone have this problem? Does >anyone know if the boards from TAPR malfunction and need to be replaced? >This is actually a replacement for another that I thought was bad. > >Should I talk to Motorola about my problem? > >Sam, K3BY > From buoy@redshift.com Thu Jul 02 09:25:36 1998 Received: from mail.redshift.com (redshift.com [209.54.200.6]) by tapr.org (8.7.5/8.7.3/1.9) with ESMTP id JAA08368 for ; Thu, 2 Jul 1998 09:25:35 -0500 (CDT) Received: from buoy.mcktech.com (pm4-193.sal.redshift.com [207.204.198.193]) by mail.redshift.com (8.8.8/8.8.8) with SMTP id HAA09552 for ; Thu, 2 Jul 1998 07:25:27 -0700 Message-ID: <001001bda5c4$d49eec80$c1c6cccf@buoy.mcktech.com> From: "Doug McKinney" To: Subject: Re: [TACGPS:1707] Motorola Oncore Board problems Date: Thu, 2 Jul 1998 07:22:19 -0700 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 4.72.2106.4 X-MimeOLE: Produced By Microsoft MimeOLE V4.72.2106.4 -----Original Message----- From: Dr Samuel Guccione To: tacgps@tapr.org Date: Thursday, July 02, 1998 8:21 AM Subject: [TACGPS:1707] Motorola Oncore Board problems >Please forgive this somewhat off the subject message. I am trying to get a >Motorola Oncore board functioning. I am using the software supplied with >the board to communicate in binary. I power up the board using my bench >supply at 5 volts connected to pin 2 of the boards DIP connector. I read >a current of about 200 or so milliamps which seems to agree with the 1.1 >watt spec of the Oncore. > >A Motorola active antenna is connected to the board. I start up the >software and it begins the initilization after I answer the two initial >questions. The first init does not produce a response so it begins the >longer init. However, when it finishes with the longer init, I do not get >any response from the board. My inital comments on the Idle/Fix mode assumed you have the VP ONCORE sending RS232 to the PC with ONCORE pins 8 (TTL TXD), 9 (TTL RXD) and 10 GND) TTL siganls going into a MAX232 chip and the RS232 levels are going to DB9-2 (TXD), DB9-3 (RXD) and DB9-5 (GND). This assumes you know the 10 pin numbering sequence. If you are having these kind of problems, you may want to order a VP Interface Board from TAPR. The board accepts 7-30vdc and provides 5vdc with 250ma and has an onboard MAX232. 73's Doug > >This is a new Oncore board from TAPR. Anyone have this problem? Does >anyone know if the boards from TAPR malfunction and need to be replaced? >This is actually a replacement for another that I thought was bad. > >Should I talk to Motorola about my problem? > >Sam, K3BY > From jrjohns@mitre.org Thu Jul 02 11:40:15 1998 Received: from mbunix.mitre.org (mbunix.mitre.org [129.83.20.100]) by tapr.org (8.7.5/8.7.3/1.9) with ESMTP id LAA15320 for ; Thu, 2 Jul 1998 11:40:13 -0500 (CDT) Received: from mail91.mitre.org (mail91.mitre.org [129.83.20.13]) by mbunix.mitre.org (8.8.8/8.8.8/mitre.0) with SMTP id MAA07316 for ; Thu, 2 Jul 1998 12:40:05 -0400 (EDT) Received: from m21525-pc.mitre.org by mail91.mitre.org (5.65v4.0/1.1.8.2/22Jun94-0628PM) id AA10163; Thu, 2 Jul 1998 12:38:55 -0400 Message-Id: <3.0.3.32.19980702123636.0349a7fc@mail91.mitre.org> X-Sender: jrjohns@mail91.mitre.org X-Mailer: QUALCOMM Windows Eudora Pro Version 3.0.3 (32) Date: Thu, 02 Jul 1998 12:36:36 -0400 To: tacgps@tapr.org From: "James R. Johns" Subject: Receiver/Comparitor Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" This is somewhat off topic from GPS but is related to tracking a local frequency standard to a traceable reference. I've just acquired a Tracor 599K VLF (WWVB) receiver/comparitor without a manual and was looking for someone who might walk me through the controls and input/outputs via Email. I've Emailed inquiries to several test equipment manual suppliers with no luck to date locating a manual. Any suggestions or recommendations appreciated. Thanks. Jim Johns KA0IQT jrjohns@mitre.org From jpawlan@pawlan.com Thu Jul 02 17:35:48 1998 Received: from scruz.net (nic.scruz.net [165.227.1.2]) by tapr.org (8.7.5/8.7.3/1.9) with ESMTP id RAA03783 for ; Thu, 2 Jul 1998 17:35:47 -0500 (CDT) Received: from pawlan.com (pawlan.com [204.139.15.114]) by scruz.net (8.8.5/1.34) with SMTP id PAA24672 for ; Thu, 2 Jul 1998 15:35:45 -0700 (PDT) Received: from localhost by pawlan.com (SMI-8.6/SMI-SVR4) id PAA00565; Thu, 2 Jul 1998 15:35:36 -0700 Date: Thu, 2 Jul 1998 15:35:36 -0700 (PDT) From: Jeffrey Pawlan X-Sender: jpawlan@jpawlan To: tacgps@tapr.org Subject: Re: [TACGPS:1715] Receiver/Comparitor In-Reply-To: <3.0.3.32.19980702123636.0349a7fc@mail91.mitre.org> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Dear Jim, I just sold a working one of these with manual to Philip Gabriel, AA0BR in Ft. Collins Colorado. He is only 7 miles from the transmitter so he obviously has no diurnal variation. I, on the other hand could not get any precision here in Calif so I had switched to Loran-C 2 years ago. You can reach Philip by phone at his home: 970 490-1865, from 6:30pm MDT to 10pm MDT. He always has his answering machine on so tell him your callsign and if he is home he will pick up. 73s, Jeffrey Pawlan, WA6KBL From jpawlan@pawlan.com Thu Jul 02 17:41:06 1998 Received: from scruz.net (nic.scruz.net [165.227.1.2]) by tapr.org (8.7.5/8.7.3/1.9) with ESMTP id RAA04035 for ; Thu, 2 Jul 1998 17:41:04 -0500 (CDT) Received: from pawlan.com (pawlan.com [204.139.15.114]) by scruz.net (8.8.5/1.34) with SMTP id PAA25437 for ; Thu, 2 Jul 1998 15:41:03 -0700 (PDT) Received: from localhost by pawlan.com (SMI-8.6/SMI-SVR4) id PAA00582; Thu, 2 Jul 1998 15:40:54 -0700 Date: Thu, 2 Jul 1998 15:40:54 -0700 (PDT) From: Jeffrey Pawlan X-Sender: jpawlan@jpawlan To: tacgps@tapr.org Subject: Re: [TACGPS:1712] HP-107BR In-Reply-To: <0008CE4A.3332@comsat.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Dear Les, I have 3 of these and have the original manual. The connector on the back should normally have a shorting plug or an adapter with a shorting wire in place. If you want to use this as EFC, make absolutely certain that you do not exceed +/- 5 volts max. This should give you +/- 2 parts in 10E-8 frequency change. 73s, Jeffrey Pawlan, WA6KBL From g13216@email1.wes.mot.com Mon Jul 06 09:37:23 1998 Received: from kato.cws.comsat.com (root@kato.cws.comsat.com [134.133.176.105]) by tapr.org (8.7.5/8.7.3/1.9) with ESMTP id JAA17644 for ; Mon, 6 Jul 1998 09:37:18 -0500 (CDT) From: Lester.Veenstra@comsat.com Received: from smtpgw2.cws.comsat.com (MISNT2.cmc.comsat.com [134.133.178.29]) by kato.cws.comsat.com (8.7.5/8.7.3) with SMTP id KAA03861; Mon, 6 Jul 1998 10:33:10 -0400 (EDT) Received: from ccMail by smtpgw2.cws.comsat.com (IMA Internet Exchange 2.11 Enterprise) id 0008DEC7; Mon, 6 Jul 1998 10:37:11 -0400 Mime-Version: 1.0 Date: Mon, 6 Jul 1998 10:31:04 -0400 Message-ID: <0008DEC7.3332@comsat.com> To: Mastenbrook Gary-G13216 Cc: tacgps@tapr.org Subject: Re[2]: [TACGPS:1712] HP-107BR Content-Type: multipart/mixed; boundary="IMA.Boundary.138537998" --IMA.Boundary.138537998 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Content-Description: cc:Mail note part Gary: Yes I got the following reply from WA6KBL, so it looks like I have what I need for immediate requirements. Next step will be to zero another source against the HP-107BR and see if the EFC function works as described. Subsequent to sending the first message, it occurred to me to do the obvious and ask HP if they had manuals available. Turns out they did have a fiche available, so I ordered that Les Subject: [TACGPS:1717] Re: HP-107BR Author: tacgps@tapr.org at INTERNET Date: 7/2/98 5:43 PM Dear Les, I have 3 of these and have the original manual. The connector on the back should normally have a shorting plug or an adapter with a shorting wire in place. If you want to use this as EFC, make absolutely certain that you do not exceed +/- 5 volts max. This should give you +/- 2 parts in 10E-8 frequency change. 73s, Jeffrey Pawlan, WA6KBL ______________________________ Reply Separator _________________________________ Subject: RE: [TACGPS:1712] HP-107BR Author: Mastenbrook Gary-G13216 at INTERNET Date: 7/6/98 8:38 AM Les- I wonder if you found your I/O information yet? I believe I may have the same unit at home (and should be able to find out for sure later today)... If so, I should have a manual in the bookcase and would be able to provide a copy for you. I've had mine working with a loran timing receiver and was successful in getting it locked to that standard. I plan on getting it locked up to GPS in the near future with a purchased/homebrew controller system of one form or another. Regards, Gary Mastenbrook, N8DMT Chicago, IL > -----Original Message----- > From: Lester.Veenstra@comsat.com [SMTP:Lester.Veenstra@comsat.com] > Sent: Wednesday, July 01, 1998 4:17 PM > To: tacgps@tapr.org > Subject: [TACGPS:1712] HP-107BR > > I have a very well aged (+30 years old out of one of > the original INTELSAT network earth stations) working > crystal freq standard, an HP-107BR. On the back, along > with the outputs is a BNC marked "Electrical Freq > Control". Looks like a prime candidate for a little > frequency disciplining using GPS/TAC. > > However, I have no manual: Does anyone have any idea > what the control interface might be? > > Tnx > Les > K1YCM --IMA.Boundary.138537998 Content-Type: text/plain; charset=US-ASCII; name="RFC822 message headers" Content-Transfer-Encoding: 7bit Content-Description: cc:Mail note part Content-Disposition: inline; filename="RFC822 message headers" Received: from ro.ctd.comsat.com (134.133.40.45) by smtpgw2.cws.comsat.com with SMTP (IMA Internet Exchange 2.11 Enterprise) id 0008DDED; Mon, 6 Jul 98 09:39:14 -0400 Received: from (motgate.mot.com) [129.188.136.100] by ro.ctd.comsat.com with esmtp (Exim 1.82 #1) id 0ytBU8-0007gv-00; Mon, 6 Jul 1998 09:39:12 -0400 Received: from mothost.mot.com (mothost.mot.com [129.188.137.101]) by motgate.mot.com (8.8.5/8.6.10/MOT-3.8) with ESMTP id IAA07771 for ; Mon, 6 Jul 1998 08:38:53 -0500 (CDT) Comments: ( Received on motgate.mot.com from client mothost.mot.com, sender g13216@email1.wes.mot.com ) Received: from email1.wes.mot.com (email1.wes.mot.com [192.93.6.3]) by mothost.mot.com (8.8.5/8.6.10/MOT-3.8) with ESMTP id IAA17084 for ; Mon, 6 Jul 1998 08:38:53 -0500 (CDT) Received: by email1.wes.mot.com with Internet Mail Service (5.0.1460.8) id <3JGDQMH8>; Mon, 6 Jul 1998 08:38:52 -0500 Message-ID: <51F347B016ADD011963200805FC1456202C0B42D@email1.wes.mot.com> From: Mastenbrook Gary-G13216 To: "'Lester.Veenstra@comsat.com'" Subject: RE: [TACGPS:1712] HP-107BR Date: Mon, 6 Jul 1998 08:38:49 -0500 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.0.1460.8) Content-Type: text/plain --IMA.Boundary.138537998-- From mdmiller@eaze.net Mon Jul 06 22:11:33 1998 Received: from mail.eaze.net (qmailr@mail.eaze.net [209.160.106.3]) by tapr.org (8.7.5/8.7.3/1.9) with SMTP id WAA12476 for ; Mon, 6 Jul 1998 22:11:31 -0500 (CDT) From: mdmiller@eaze.net Received: (qmail 19545 invoked from network); 7 Jul 1998 02:08:38 -0000 Received: from unknown (HELO miller.slimpy.eaze.net) (209.160.127.50) by mail.eaze.net with SMTP; 7 Jul 1998 02:08:38 -0000 Message-Id: <3.0.5.32.19980706221014.007f5330@mail.eaze.net> X-Sender: mdmiller@mail.eaze.net X-Mailer: QUALCOMM Windows Eudora Pro Version 3.0.5 (32) Date: Mon, 06 Jul 1998 22:10:14 -0500 To: tacgps@tapr.org Subject: Re: [TACGPS:1573] 1998 ARRL and TAPR Digital Communications Conference In-Reply-To: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Greg, I attended the DCC last year in Baltimore, and what made it interesting for me was the GPS and Spread Spectrum seminars. Looking through the schedule I don't see any of these subjects listed this year (except for APRS GPS). Will there by any seminars on GPS disciplining of oscillators? What type of Spread Spectrum information can I expect? 73 Mark Miller N5RFX At 02:48 PM 5/31/98 -0500, you wrote: >Topics will include APRS, satellite communications, TCP/IP, digital radio, >Spread Spectrum, and many others. Come to the conference and hear these >topics presented by the experts! Don't miss this opportunity to listen and >talk to others in these areas. > >----- >What can you expect during the 1998 ARRL and TAPR Digital Communications >Conference? > >* SIGs (Special Interest Groups) get-togethers on Saturday, following > the banquet > >If you have attended a Digital Communications Conference in the past, >remember how much fun it was discussing the latest developments into the >wee hours! If you have never been to a Digital Communications Conference, >then make your plans now to attend and find out how much fun they can be. From wd5ivd@tapr.org Tue Jul 07 10:35:09 1998 Received: from [207.8.125.50] (greg-jones-pc1.customer.jump.net [207.8.125.50]) by tapr.org (8.7.5/8.7.3/1.9) with ESMTP id KAA05813 for ; Tue, 7 Jul 1998 10:35:07 -0500 (CDT) Message-Id: In-Reply-To: <3.0.5.32.19980706221014.007f5330@mail.eaze.net> References: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Date: Tue, 7 Jul 1998 10:34:38 -0500 To: tacgps@tapr.org From: "Greg Jones, WD5IVD" Subject: Re: [TACGPS:1719] Re: 1998 ARRL and TAPR Digital Communications >Greg, > >I attended the DCC last year in Baltimore, and what made it interesting for >me was the GPS and Spread Spectrum seminars. Looking through the schedule >I don't see any of these subjects listed this year (except for APRS GPS). > >Will there by any seminars on GPS disciplining of oscillators? > >What type of Spread Spectrum information can I expect? > >73 >Mark Miller >N5RFX > Well, every year is different. I think if you enjoyed the SS talks last year on Sunday you will again like the seminar we have put together for Sunday. Both Lyle's and Tim's talks will be very good and Tim's very relevant to generating networks using Spread Spectrum techniques. As to GPS disciplining of oscillators, that will depend if someone submits a paper or not for the main session ? Hopefully, Tom Clark or someone else working in this area will be presenting something -- but we have little control from year to year on what people do present in the paper session. I am sure it will probably come up in some form during the intro sesions on GPS most likey. As always, if the area you are interested in is not actually being formally presented, you have the chance to meet in person with the people that know it, since they will be there. Just a matter of coming and saying hello to them and asking a question. Hope to see you in Chicago. http://www.tapr.org/dcc Don't forget that the paper deadline is Aug 15th! Cheers - Greg ----- Greg Jones, WD5IVD Austin, Texas wd5ivd@tapr.org http://www.tapr.org/~wd5ivd Real World, The n.: 5. Anywhere outside a university. "Poor fellow, he's left UT Austin and gone into the real world." From kjordan@marathon.lakeheadu.ca Tue Jul 07 21:08:06 1998 Received: from marathon.Lakeheadu.ca (marathon.lakeheadu.ca [204.225.39.2]) by tapr.org (8.7.5/8.7.3/1.9) with ESMTP id VAA19267 for ; Tue, 7 Jul 1998 21:08:03 -0500 (CDT) Received: from pro_1 (mardyn-16.lakeheadu.ca [206.248.139.16]) by marathon.Lakeheadu.ca (8.8.8/8.8.8) with SMTP id WAA08354 for ; Tue, 7 Jul 1998 22:10:25 -0400 (EDT) Message-Id: <199807080210.WAA08354@marathon.Lakeheadu.ca> From: "Kelly Jordan" To: tacgps@tapr.org Date: Tue, 7 Jul 1998 22:10:36 +0000 MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Subject: TAC-32/Oncore/DGPS connection Priority: normal I am about to connect the Oncore/DGPS assembly to the computer. Does the 1pps output (pin 1 on DGPS board) connect to DCD on the PC (pin 1 on 9 pin rs-232 connector on PC)?? - Kelly VE3OTK From srbible@gate.net Wed Jul 08 06:54:37 1998 Received: from chickasaw.gate.net (root@chickasaw.gate.net [198.206.134.26]) by tapr.org (8.7.5/8.7.3/1.9) with ESMTP id GAA26011 for ; Wed, 8 Jul 1998 06:54:36 -0500 (CDT) Received: from supply.camcomp.com (ga1-58.camcomp.com [208.5.76.58]) by chickasaw.gate.net (8.8.6/8.6.12) with SMTP id HAA188362 for ; Wed, 8 Jul 1998 07:54:13 -0400 Message-Id: <3.0.5.32.19980708075346.0079c940@pop.gate.net> X-Sender: srbible@pop.gate.net X-Mailer: QUALCOMM Windows Eudora Light Version 3.0.5 (32) Date: Wed, 08 Jul 1998 07:53:46 -0400 To: tacgps@tapr.org From: "Steven R. Bible" Subject: Re: [TACGPS:1721] TAC-32/Oncore/DGPS connection In-Reply-To: <199807080210.WAA08354@marathon.Lakeheadu.ca> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" At 09:10 PM 7/7/98 -0500, you wrote: >I am about to connect the Oncore/DGPS assembly to the computer. Does >the 1pps output (pin 1 on DGPS board) connect to DCD on the PC (pin 1 >on 9 pin rs-232 connector on PC)?? In short, yes. The assembly instructions have you connecting the 1PPS signal to pin 1 (DCD) of a DB9 connector. If you use the TAC32 software, TAC32 does not expressly require the signal. If you use the older DOS program SHOWTIME, then it does need it. From kjordan@marathon.lakeheadu.ca Wed Jul 08 18:03:05 1998 Received: from marathon.Lakeheadu.ca ([204.225.39.2]) by tapr.org (8.7.5/8.7.3/1.9) with ESMTP id SAA01798 for ; Wed, 8 Jul 1998 18:03:02 -0500 (CDT) Received: from pro_1 (mardyn-66.lakeheadu.ca [206.248.139.66]) by marathon.Lakeheadu.ca (8.8.8/8.8.8) with SMTP id TAA16399 for ; Wed, 8 Jul 1998 19:04:56 -0400 (EDT) Message-Id: <199807082304.TAA16399@marathon.Lakeheadu.ca> From: "Kelly Jordan" To: tacgps@tapr.org Date: Wed, 8 Jul 1998 19:05:05 +0000 MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Subject: Re: [TACGPS:1722] Re: TAC-32/Oncore/DGPS connection Priority: normal In-reply-to: <3.0.5.32.19980708075346.0079c940@pop.gate.net> References: <199807080210.WAA08354@marathon.Lakeheadu.ca> > In short, yes. The assembly instructions have you connecting the 1PPS > signal to pin 1 (DCD) of a DB9 connector. If you use the TAC32 software, > TAC32 does not expressly require the signal. If you use the older DOS > program SHOWTIME, then it does need it. Thanks, Steven. Thats exactly what I wanted to know. - Kelly VE3OTK From kjordan@marathon.lakeheadu.ca Wed Jul 08 18:03:07 1998 Received: from marathon.Lakeheadu.ca ([204.225.39.2]) by tapr.org (8.7.5/8.7.3/1.9) with ESMTP id SAA01815 for ; Wed, 8 Jul 1998 18:03:03 -0500 (CDT) Received: from pro_1 (mardyn-66.lakeheadu.ca [206.248.139.66]) by marathon.Lakeheadu.ca (8.8.8/8.8.8) with SMTP id TAA16402 for ; Wed, 8 Jul 1998 19:04:57 -0400 (EDT) Message-Id: <199807082304.TAA16402@marathon.Lakeheadu.ca> From: "Kelly Jordan" To: tacgps@tapr.org Date: Wed, 8 Jul 1998 19:05:05 +0000 MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Subject: Re: [TACGPS:1721] TAC-32/Oncore/DGPS connection Priority: normal In-reply-to: References: <199807080210.WAA08354@marathon.Lakeheadu.ca> > That's what I see on page 5 in the DGPSIB manual > > do you need a PDF file of the doc's Hi bob, I have the docs. But I just noticed there was a page 8, 9, 10, and 11!! Stephen's answer what I was looking for. - Kelly VE3OTK From srbible@gate.net Wed Jul 08 18:30:39 1998 Received: from chickasaw.gate.net (root@chickasaw.gate.net [198.206.134.26]) by tapr.org (8.7.5/8.7.3/1.9) with ESMTP id SAA03309 for ; Wed, 8 Jul 1998 18:30:38 -0500 (CDT) Received: from srbible (kngga2-21.gate.net [207.36.2.21]) by chickasaw.gate.net (8.8.6/8.6.12) with SMTP id TAA186008 for ; Wed, 8 Jul 1998 19:30:14 -0400 Message-Id: <3.0.5.32.19980708193032.00801df0@pop.gate.net> X-Sender: srbible@pop.gate.net X-Mailer: QUALCOMM Windows Eudora Light Version 3.0.5 (32) Date: Wed, 08 Jul 1998 19:30:32 -0400 To: tacgps@tapr.org From: "Steven R. Bible" Subject: Re: [TACGPS:1723] Re: TAC-32/Oncore/DGPS connection In-Reply-To: <199807082304.TAA16399@marathon.Lakeheadu.ca> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" At 06:07 PM 7/8/98 -0500, you wrote: >> In short, yes. The assembly instructions have you connecting the 1PPS >> signal to pin 1 (DCD) of a DB9 connector. If you use the TAC32 software, >> TAC32 does not expressly require the signal. If you use the older DOS >> program SHOWTIME, then it does need it. > >Thanks, Steven. Thats exactly what I wanted to know. > >- Kelly VE3OTK And I forgot to mention that SA Watch can also set up the DGPSIB and does not need the 1PPS signal. Glad you got your answer! - Steve (n7hpr@tapr.org) From ebs@lanl.gov Fri Jul 10 16:58:49 1998 Received: from mailman.lanl.gov (mailman.lanl.gov [128.165.5.1]) by tapr.org (8.7.5/8.7.3/1.9) with ESMTP id QAA27503 for ; Fri, 10 Jul 1998 16:58:47 -0500 (CDT) Received: from newreg.lanl.gov (newreg.lanl.gov [128.165.3.60]) by mailman.lanl.gov (8.9.0/8.9.0/(cic-5, 5/21/98)) with ESMTP id PAA20844 for ; Fri, 10 Jul 1998 15:58:45 -0600 Received: from [128.165.7.162] (transitory38.lanl.gov [128.165.7.162]) by newreg.lanl.gov (8.8.8/(cic-5, 10/28/97)) with SMTP id PAA08697 for ; Fri, 10 Jul 1998 15:58:44 -0600 (MDT) Message-Id: <199807102158.PAA08697@newreg.lanl.gov> Subject: Scarce part for QST GPS-VCXO Controller Date: Fri, 10 Jul 1998 16:00:10 -0600 x-sender: ebs@biophysics.lanl.gov x-mailer: Claris Emailer 2.0v3, January 22, 1998 From: Brooks Shera To: Mime-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Just a note for those who are building the controller described in my article in the July '98 QST. The controller has appearently been so popular :-) that Digi-Key is now out-of-stock of the 24 MHz oscillator chip made by ECS (DK XC-313) and they are quoting September delivery. When I checked this morning, Mouser Electronics (800) 346-6873 had 20 units left in stock. The Mouser part number is 520-DCO2400 and the price is $5.13. Also, I have added some construction notes, etc to my webpage at www.rt66.com/~shera. 73, Brooks From kjordan@marathon.lakeheadu.ca Sun Jul 12 21:23:27 1998 Received: from marathon.Lakeheadu.Ca ([204.225.39.2]) by tapr.org (8.7.5/8.7.3/1.9) with SMTP id VAA06611 for ; Sun, 12 Jul 1998 21:23:25 -0500 (CDT) Received: from pro_1 by marathon.Lakeheadu.Ca (SMI-8.6/SMI-SVR4) id WAA08643; Sun, 12 Jul 1998 22:25:18 -0400 Message-Id: <199807130225.WAA08643@marathon.Lakeheadu.Ca> From: "Kelly Jordan" To: tacgps@tapr.org Date: Sun, 12 Jul 1998 22:22:46 +0000 MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Subject: PicoPacket & DGPS Priority: normal Am finally trying to get the DGPS working. First question: Is there any way I can input the DGPS info into the second port of the PicoPacket so the first port can be used to monitor packets on the frequency? Second question: Have another PicoPacket with internal GPS. How do I get it use the DGPS packets? I think the field after 'W' (west) in the $GPGGA string goes from 1 (non-DGPS correction) to 2 (DGPS correction) when it is using DGPS correction. It is staying at 1. While I am testing, I have the two PicoPackets tied together with the audio cables. Works fine and don't have to tie up two radios or clutter the air while testing. - Kelly VE3OTK From tvb@veritas.com Mon Jul 13 18:39:16 1998 Received: from athena.veritas.com (athena.veritas.com [192.203.46.191]) by tapr.org (8.7.5/8.7.3/1.9) with ESMTP id SAA27894 for ; Mon, 13 Jul 1998 18:39:12 -0500 (CDT) Received: from megami.veritas.com (megami.veritas.com [192.203.46.101]) by athena.veritas.com (8.9.0/8.9.0) with SMTP id QAA19747 for ; Mon, 13 Jul 1998 16:39:09 -0700 (PDT) Received: from v-tomvb6 by megami.veritas.com with smtp (Smail3.1.29.0 #7) id m0yvsBU-0000KxC; Mon, 13 Jul 98 16:39 PDT Message-ID: <35AA97E2.1010@veritas.com> Date: Mon, 13 Jul 1998 16:27:30 -0700 From: Tom Van Baak Reply-To: tvb@veritas.com Organization: VERITAS Software X-Mailer: Mozilla 3.01 (WinNT; I) MIME-Version: 1.0 To: tacgps@tapr.org Subject: Rb group buy offer References: <358AB93F.46FC@veritas.com> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit I was thinking of picking up a few more Rb for myself and two friends. I was wondering if anyone wanted to join me this week in a group buy. Corby is offering them for $375 at a quantity of five and $350 at ten. $350 for a surplus Efratom M-100 is a really good deal. They come fully tested, guaranteed, and tuned. He also includes a complete operating/service manual with each one. Thanks, /tvb > -------- > > Wade Lehman has Ball/Efratom FRK-L rubidium oscillators for > sale at $500. Several TAC-GPS members have purchased these. > Contact info: > Lehman Scientific > sales@lehmanscientific.com > http://www.lehmanscientific.com/ > 1.800.784.8680 > > Tom Hamilton has EG&G RFS-10-7 and Efratom M-100 rubidium > oscillators for sale at $695 (or $500 at quantity 10). > Contact info: > Hamilton Instruments > TE@worldnet.att.net > http://www.angelfire.com/biz/telist/ > 1.800.862.8983 > > Corby Dawson also has EG&G RFS-10-7 and Efratom M-100 > rubidium oscillators. Price is $425 each, or $375 for > quantity 5, or $350 at quantity 10. Several of us have > purchased Rubidium and Cesium standards from Corby. > Contact info: > Corby Dawson > 1.805.736.0288 > > Bernie Goetz has Efratom FRS-C rubidium oscillators. At > 2x3x4 inches these are about half the size of the M-100 > class oscillator. These have 10 MHz TTL output. > Contact info: > Vigilante Electronics > sales@vigilante-electronics.com > http://www.vigilante-electronics.com/ > 1.212.243.7964 From lylej@azstarnet.com Mon Jul 13 20:08:58 1998 Received: from cepheus.azstarnet.com (cepheus.azstarnet.com [169.197.1.36]) by tapr.org (8.7.5/8.7.3/1.9) with ESMTP id UAA04880 for ; Mon, 13 Jul 1998 20:08:56 -0500 (CDT) Received: from tomswift (dialup20ip066.tus.azstarnet.com [169.197.39.194]) by cepheus.azstarnet.com (8.8.5-nerd/8.8.5) with SMTP id SAA15941 for ; Mon, 13 Jul 1998 18:08:32 -0700 (MST) X-Sent-via: StarNet http://www.azstarnet.com/ Message-Id: <3.0.5.32.19980713180755.0090a500@pop.azstarnet.com> X-Sender: lylej@pop.azstarnet.com X-Mailer: QUALCOMM Windows Eudora Pro Version 3.0.5 (32) Date: Mon, 13 Jul 1998 18:07:55 -0700 To: tacgps@tapr.org From: Lyle Johnson Subject: Re: [TACGPS:1728] Rb group buy offer In-Reply-To: <35AA97E2.1010@veritas.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" At 06:44 PM 7/13/98 -0500, you wrote: >I was thinking of picking up a few more Rb for myself >and two friends. I was wondering if anyone wanted to >join me this week in a group buy. Corby is offering >them for $375 at a quantity of five and $350 at ten. > >$350 for a surplus Efratom M-100 is a really good deal. >They come fully tested, guaranteed, and tuned. He also >includes a complete operating/service manual with each >one. > >Thanks, >/tvb If these units are tested/calibrated, then put me down for one. To whom do I send the check? Lyle From wetech@bellatlantic.net Tue Jul 14 15:55:15 1998 Received: from iconmail.bellatlantic.net (iconmail.bellatlantic.net [199.173.162.30]) by tapr.org (8.7.5/8.7.3/1.9) with ESMTP id PAA09441 for ; Tue, 14 Jul 1998 15:55:10 -0500 (CDT) Received: from bellatlantic.net (client201-118-13.bellatlantic.net [151.201.118.13]) by iconmail.bellatlantic.net (IConNet Sendmail) with ESMTP id QAA11656 for ; Tue, 14 Jul 1998 16:50:11 -0400 (EDT) Sender: wetech@iconmail.bellatlantic.net Message-ID: <35ABC485.5168A34E@bellatlantic.net> Date: Tue, 14 Jul 1998 16:50:14 -0400 From: "Warren R. Fugate" Organization: WE Technologies X-Mailer: Mozilla 4.05 [en] (X11; U; Linux 2.0.34 i586) MIME-Version: 1.0 To: tacgps@tapr.org Subject: Re: Rb group buy offer References: <199807140225.VAA10389@tapr.org> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit I have been unable to find complete specifications for the M-100. EG&G's web site has specs for the FRS-10-7 and it looks like it might be superior. Does anyone know for certain? > Date: Mon, 13 Jul 1998 16:27:30 -0700 > From: Tom Van Baak > To: tacgps@tapr.org > Subject: Rb group buy offer > Message-ID: <35AA97E2.1010@veritas.com> > > I was thinking of picking up a few more Rb for myself > and two friends. I was wondering if anyone wanted to > join me this week in a group buy. Corby is offering > them for $375 at a quantity of five and $350 at ten. > > $350 for a surplus Efratom M-100 is a really good deal. > They come fully tested, guaranteed, and tuned. He also > includes a complete operating/service manual with each > one. > > Thanks, > /tvb > [snip] > > Corby Dawson also has EG&G RFS-10-7 and Efratom M-100 > > rubidium oscillators. Price is $425 each, or $375 for > > quantity 5, or $350 at quantity 10. Several of us have > > purchased Rubidium and Cesium standards from Corby. > > Contact info: > > Corby Dawson > > 1.805.736.0288 [snip] -- Warren R. Fugate W3WE WE Technologies wetech@bellatlantic.net From tvb@veritas.com Tue Jul 14 16:33:40 1998 Received: from athena.veritas.com (athena.veritas.com [192.203.46.191]) by tapr.org (8.7.5/8.7.3/1.9) with ESMTP id QAA11168 for ; Tue, 14 Jul 1998 16:33:37 -0500 (CDT) Received: from megami.veritas.com (megami.veritas.com [192.203.46.101]) by athena.veritas.com (8.9.0/8.9.0) with SMTP id OAA22768 for ; Tue, 14 Jul 1998 14:33:20 -0700 (PDT) Received: from v-tomvb6 by megami.veritas.com with smtp (Smail3.1.29.0 #7) id m0ywChH-0000CCC; Tue, 14 Jul 98 14:33 PDT Message-ID: <35ABCBE6.2A26@veritas.com> Date: Tue, 14 Jul 1998 14:21:42 -0700 From: Tom Van Baak Reply-To: tvb@veritas.com Organization: VERITAS Software X-Mailer: Mozilla 3.01 (WinNT; I) MIME-Version: 1.0 To: tacgps@tapr.org Subject: Re: [TACGPS:1730] Re: Rb group buy offer References: <35ABC485.5168A34E@bellatlantic.net> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Warren R. Fugate wrote: > > I have been unable to find complete specifications for the M-100. > EG&G's web site has specs for the FRS-10-7 and it looks like it might be > superior. Does anyone know for certain? Corby will fax you the specifications he just obtained for the EG&G FRS-10-7. I think he said it performed a little better than the M-100 and certainly uses less power. Note the EG&G's were made as field replacements for the M-100 and thus have identical physical and similar or better operational specs as the M-100. The short specs I have on the M-100 are: o Output: 10 MHz 0.5 Vrms sine wave o Input: 22.5 to 32.0 VDC (about 600 mA after warmup) o Drift (first year): < 3.6e-10 / year o Drift (second year): < 2e-10 / year o Short-term stability: 1 sec, 3e-11; 100 sec, 3e-12 o Frequency trim range: >= 3e-9 o Settability and retrace: +/- 1e-11 o Warmup: < 10 min. to +/- 2e-10; < 30 min to +/- 5e-11 o Temperature (-55C to +68C): < 3e-10 o Size: 4.8 x 3.9 x 3.9 inches o Mass: about 4 lb. /tvb From tvb@veritas.com Tue Jul 14 16:47:07 1998 Received: from athena.veritas.com (athena.veritas.com [192.203.46.191]) by tapr.org (8.7.5/8.7.3/1.9) with ESMTP id QAA11608 for ; Tue, 14 Jul 1998 16:47:06 -0500 (CDT) Received: from megami.veritas.com (megami.veritas.com [192.203.46.101]) by athena.veritas.com (8.9.0/8.9.0) with SMTP id OAA24290 for ; Tue, 14 Jul 1998 14:47:03 -0700 (PDT) Received: from v-tomvb6 by megami.veritas.com with smtp (Smail3.1.29.0 #7) id m0ywCub-0000LPC; Tue, 14 Jul 98 14:47 PDT Message-ID: <35ABCF21.3C25@veritas.com> Date: Tue, 14 Jul 1998 14:35:29 -0700 From: Tom Van Baak Reply-To: tvb@veritas.com Organization: VERITAS Software X-Mailer: Mozilla 3.01 (WinNT; I) MIME-Version: 1.0 To: tacgps@tapr.org Subject: Re: [TACGPS:1728] Rb group buy offer References: <35AA97E2.1010@veritas.com> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Tom Van Baak wrote: > > I was thinking of picking up a few more Rb for myself > and two friends. I was wondering if anyone wanted to > join me this week in a group buy. Corby is offering > them for $375 at a quantity of five and $350 at ten. > > $350 for a surplus Efratom M-100 is a really good deal. > They come fully tested, guaranteed, and tuned. He also > includes a complete operating/service manual with each > one. > > Thanks, > /tvb Ok, in less than a day I received 10 offers from people interested in these Rb oscillators so the group buy is on! I think it would be best if you now each made your own call to Corby Dawson (1.805.736.0288) telling him you'd like the TAC-GPS $350 group buy price. You can arrange payment and shipping details with him. He has a mix of EG&G RFS-10-7 and Efratom M-100 units. /tvb From doug@clecom.com Tue Jul 14 17:39:28 1998 Received: from grover.en.com (grover.en.com [204.89.181.10]) by tapr.org (8.7.5/8.7.3/1.9) with ESMTP id RAA13338 for ; Tue, 14 Jul 1998 17:39:26 -0500 (CDT) Received: from shop.clecom.com (p33-clv-ts2.en.net [207.180.210.97]) by grover.en.com (8.8.8/8.8.8) with SMTP id SAA07666 for ; Tue, 14 Jul 1998 18:39:45 -0400 (EDT) Message-Id: <3.0.32.19980714183733.0068daf4@wingate> X-Sender: clevecom#en.com@wingate X-Mailer: Windows Eudora Pro Version 3.0 (32) Date: Tue, 14 Jul 1998 18:37:35 -0400 To: tacgps@tapr.org From: Doug Bade Subject: SA CHANGE ? Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" I am watching one of my differentially corrected gps's and I am noting only 2 satellites showing correction this occurred at about 22:00 utc 7-14. Is anyone else noticing anything or is my equipment having a problem only sats 1 and 26 are being corrected. My DGPSD Station seems in order as normal. Normally I have 6 or 7 sats with dgps correction depending on correlation of my oncore DGPS and my Garmin III, let me know if anyone is seeing this, or my equip is goofing up.. TNX, Doug KB8GVQ From glittle@awod.com Tue Jul 14 19:09:36 1998 Received: from sumter.awod.com (sumter.awod.com [208.140.99.1]) by tapr.org (8.7.5/8.7.3/1.9) with ESMTP id TAA26127 for ; Tue, 14 Jul 1998 19:09:34 -0500 (CDT) Received: from chs0103.awod.com (chs0103.awod.com [208.140.96.103]) by sumter.awod.com (8.8.7/8.8.5) with SMTP id UAA12118; Tue, 14 Jul 1998 20:09:29 -0400 (EDT) Message-Id: <3.0.5.16.19980714200740.327f6d2c@awod.com> X-Sender: glittle@awod.com X-Mailer: QUALCOMM Windows Eudora Light Version 3.0.5 (16) Date: Tue, 14 Jul 1998 20:07:40 -0400 To: Doug Bade , tacgps@tapr.org From: Glenn Little Subject: Re: [TACGPS:1733] SA CHANGE ? In-Reply-To: <3.0.32.19980714183733.0068daf4@wingate> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Differential corrections will only apply to the satellites that you AND the differential beacon station are tracking. If a sat is in your field of view and not in the field of view of the differential beacon station, you can get no corrections. Corrections only apply the the sat from which they were obtained. On the off chance that the beacon station was shielded in one direction from part of the constallation (sp) and you were shielded from another part, it is possible that you would have no sats in common and therefore no corrections possible until the geometry changed. At 05:45 PM 7/14/98 -0500, you wrote: > I am watching one of my differentially corrected gps's and I am noting >only 2 satellites showing correction this occurred at about 22:00 utc 7-14. >Is anyone else noticing anything or is my equipment having a problem only >sats 1 and 26 are being corrected. My DGPSD Station seems in order as normal. > Normally I have 6 or 7 sats with dgps correction depending on correlation >of my oncore DGPS and my Garmin III, let me know if anyone is seeing this, >or my equip is goofing up.. TNX, Doug KB8GVQ > > > --------------------------------------------------------------------------- Glenn Little glittle@awod.com QCWA LM 28417 Amateur Callsign: WB4UIV wb4uiv@amsat.org AMSAT LM 2178 QTH: Goose Creek, SC USA (EM92xx) ARRL TAPR --------------------------------------------------------------------------- From gregory.beat@mediaone.net Tue Jul 14 21:31:24 1998 Received: from ce.mediaone.net (ce.mediaone.net [24.128.1.97]) by tapr.org (8.7.5/8.7.3/1.9) with ESMTP id VAA00337 for ; Tue, 14 Jul 1998 21:31:23 -0500 (CDT) From: gregory.beat@mediaone.net Received: from beatgr ([24.131.150.55]) by ce.mediaone.net (Netscape Messaging Server 3.01) with SMTP id AAA20174 for ; Tue, 14 Jul 1998 22:31:17 -0400 Message-ID: <00c401bdaf98$a52cac20$37968318@beatgr.ce.mediaone.net> To: Subject: USNO to Celebrate Millennium with Time Ball Date: Tue, 14 Jul 1998 21:31:04 -0500 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 4.72.3110.1 X-MimeOLE: Produced By Microsoft MimeOLE V4.72.3110.3 Since this TAPR group is concerned with time ... an appropriate news release. ---------------------------------------------------------------------------- NEWS! from the NAVAL OBSERVATORY U.S. Naval Observatory Public Affairs Office For Immediate Release. Press Contact: Dr. Steven J. Dick 8 July 1998 Press Contact: Geoff Chester ---------------------------------------------------------------------------- U.S. Naval Observatory to Celebrate Millennium with Washington Time Ball The U.S. Naval Observatory, which maintains the Master Clock of the United States, will usher in the years 2000 and 2001 by dropping a time ball from the telescope dome atop its main building in Washington, D.C. By order of the Secretary of the Navy, the Naval Observatory dropped the first time ball in the United States in 1845, as the primary means for disseminating time to the city of Washington, and for ships on the Potomac to set their chronometers for navigation. The ball was dropped every day at noon from the Observatory's Foggy Bottom site until 1885, when it was moved to the State, War and Navy Building (now the old Executive Office Building) next to the White House. It was last dropped there in 1936. The dropping of the time ball to usher in the year 2000 will therefore commemorate an old tradition for Washington and the U.S. Navy. It will, however, be dropped at midnight EST on New Year's Eve rather than noon. The event is also part of the White House Millennium Program. Time balls were used in many cities around the country and around the world during the 19th century. Those in the U.S. were sometimes dropped by a signal from Washington. Beginning in September, 1877 a time ball atop the Western Union Building in New York City was dropped by telegraphic signal from the Naval Observatory. In the era before time zones, the signal for New York was issued 12 minutes before that for Washington to take into account the longitude difference. At the turn of the 20th century dozens of time balls were being dropped around the world. A few are still ceremonially dropped, ranging from New Zealand to the Old Royal Observatory, Greenwich. The dropping of the time ball to mark the millennium raises the contentious question of when the millennium actually begins. The official answer is clear, if not widely understood: January 1, 2001. This is because there is no year zero. Years of the Gregorian calendar, which is currently in use today, are counted from AD 1. Thus, the 1st century comprised the years AD 1 through AD 100. The second century began with AD 101 and continued through AD 200. By extrapolation we find that the 20th century comprises the years AD 1901-2000. Therefore, the 21st century will begin with 1 January 2001 and continue through 31 December 2100. Similarly, the 1st millennium comprised the years AD 1-1000. The 2nd millennium comprises the years AD 1001-2000. The 3rd millennium will begin with AD 2001 and continue through AD 3000. But admittedly, all those zeros turning over for the year 2000 is cause for celebration! For this reason, the USNO will drop time balls for both the years 2000 and 2001. There is also a countdown clock on the USNO Millennium Web page at http://www.usno.navy.mil . Among its other millennium activities, the Naval Observatory will also hold a symposium in March, 1999 to commemorate the 150th anniversary of the founding of the Nautical Almanac Office, a part of the Naval Observatory since the late 19th century. Another frequently asked question is whether the year 2000 is a leap year. The answer is yes. The rule, according to the Gregorian reform of 1582, is that years evenly divisible by four are leap years, except for centurial years, which must be evenly divisible by 400. Thus 1700, 1800 and 1900 were not leap years, but 1600 was, and 2000 will be. The Naval Observatory began as the Depot of Charts and Instruments for the Navy in 1830. From 1844 to 1893 it was located at Foggy Bottom. Since 1893, the Naval Observatory has been located at 34th and Massachusetts Avenue, about 2 miles from the Foggy Bottom site and the center of Washington, D.C. Determination and dissemination of time have been an essential part of the Naval Observatory mission since its beginning. During that time clock technology has evolved from precision pendulum clocks to quartz crystal clocks to the present hydrogen maser and cesium-beam atomic clocks. Similarly, time dissemination has evolved from the visual signal represented by the time ball, to the telegraph beginning in the 1860s, to radio signals and finally the Global Positioning System (GPS), for which USNO still supplies the time. Clock accuracy has advanced from one-thousandth of a second with the most elaborate pendulum clocks at the beginning of the century, to one billionth of a second per day with the present atomic clocks. Time dissemination, accurate to a few tenths of a second with the time ball, is now accurate to within a few billionths of a second with GPS. Aside from maintaining the Master Clock of the United States, the Observatory produces star catalogs, astronomical and navigational almanacs, and conducts forefront astronomical research. It is building a "cesium fountain" atomic clock to improve time accuracy ten-fold. It has constructed the Navy Prototype Optical Interferometer, which will help improve the celestial reference system and may discover Earth-size planets. The Observatory accurately measures the rotation of the Earth using radio telescopes around the world. And it continues a variety of efforts to improve navigation by land, sea, air, and space. For more details on the millennium and USNO millennium activities, visit the USNO Millennium Web site, accessible via the home page or the Public Affairs page. Time ball-related illustrations are available at this site. The USNO Web site also has much information on the Master Clock and other USNO projects. More detailed information on time, calendars and related matters is also found in the Explanatory Supplement to the Astronomical Almanac, ed. P. Kenneth Seidelmann (University Science Books, 1992). For more details on the Naval Observatory time ball see Ian R. Bartky and Steven J. Dick, "The First North American Time Ball," Journal for the History of Astronomy, 13 (1982), 50-54. On the first time balls in the world, erected in Portsmouth and Greenwich, see Ian R. Bartky and Steven J. Dick, "The First Time Balls," Journal for the History of Astronomy, 12 (1981), 155-74. These articles are available at the web site. For the spread of time balls in the United States see Ian R. Bartky, "Naval Observatory Time Dissemination Before the Wireless," in Sky with Ocean Joined, Steven J. Dick and LeRoy Doggett, eds. (Washington, 1983), 1-28. The latter contains numerous illustrations of time balls, as does Bartky's article "The Bygone Era of Time Balls," Sky and Telescope (January, 1987), 32-35. For a comprehensive bibliography on the problem of when a new century begins, see Ruth S. Freitag, The Battle of the Centuries (Library of Congress, Washington, 1995). ---------------------------------------------------------------------------- NOTE: Illustrations supporting this release are available at http://www.usno.navy.mil/millrel.html ILLUSTRATION CAPTIONS: [Illustration 1] Earliest evidence of a time ball at the Naval Observatory. >From Astronomical Observations (1845) of the U. S. Naval Observatory. Washington: J. & S. Gideon, 1846. [Illustration 2] Washington time ball. >From Executive Office Building; General Services Administration Historical Study No. 3, Washington: Government Printing Office, 1970 [Illustration 3] >From Harper's New Monthly Magazine, 56 (1878), 655-71 ---------------------------- G. Beat W9GB From jpringle@tampabay.rr.com Wed Jul 15 09:41:03 1998 Received: from mail-atm.tampabay.rr.com (tampabay.rr.com [24.92.0.1]) by tapr.org (8.7.5/8.7.3/1.9) with ESMTP id JAA09225 for ; Wed, 15 Jul 1998 09:39:27 -0500 (CDT) Received: from john (dt0c0n5f.tampabay.rr.com [24.92.29.95]) by mail-atm.tampabay.rr.com (8.8.7/8.8.8) with SMTP id KAA25054 for ; Wed, 15 Jul 1998 10:34:49 -0400 (EDT) From: "John K. Pringle" To: "TAC-2 mail list" Subject: USNO to Celebrate Millennium with Time Ball Date: Wed, 15 Jul 1998 10:41:04 -0400 Message-ID: <000001bdaffe$9814dce0$5f1d5c18@john.tampabay.rr.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook 8.5, Build 4.71.2173.0 Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V4.72.2106.4 Greg -- Very, very interesting reading. Thanks for posting it. 73 John W4SF From ebs@lanl.gov Wed Jul 15 11:38:02 1998 Received: from mailman.lanl.gov (mailman.lanl.gov [128.165.5.1]) by tapr.org (8.7.5/8.7.3/1.9) with ESMTP id LAA14088 for ; Wed, 15 Jul 1998 11:37:56 -0500 (CDT) Received: from newreg.lanl.gov (newreg.lanl.gov [128.165.3.60]) by mailman.lanl.gov (8.9.0/8.9.0/(cic-5, 5/21/98)) with ESMTP id KAA20281 for ; Wed, 15 Jul 1998 10:37:44 -0600 Received: from [128.165.7.17] (transitory168.lanl.gov [128.165.7.17]) by newreg.lanl.gov (8.8.8/(cic-5, 10/28/97)) with SMTP id KAA19536 for ; Wed, 15 Jul 1998 10:37:42 -0600 (MDT) Message-Id: <199807151637.KAA19536@newreg.lanl.gov> Subject: Another Scarce part for QST GPS-VCXO Controller Date: Wed, 15 Jul 1998 10:39:20 -0600 x-sender: ebs@biophysics.lanl.gov x-mailer: Claris Emailer 2.0v3, January 22, 1998 From: Brooks Shera To: Mime-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Just a note for those who are building the controller described in my article in the July '98 QST The controller has appearently been so popular :-) that Digi-Key is now out-of-stock of ANOTHER part: the Burr-Brown PCM-61P. I find Arrow Electronics (800) 833-3557 has the PCM61P is stock ($9.47). When I called they had 15 left. Arrow has a $25 min. order but if you talk to Sherria (ext. 4031) and order something else besides the chip she might not hold you to $25. Another source is Sager Electronics (800) 677-7716. They have 207 in stock, but a $100 min. order! For those that haven't seen it yet I should mention that, I have added some construction notes, etc to my webpage at www.rt66.com/~shera. Write an article for QST and become a purchasing agent! 73, Brooks From hburford@airmail.net Wed Jul 15 13:23:26 1998 Received: from mail.airmail.net (mail.airmail.net [206.66.12.40]) by tapr.org (8.7.5/8.7.3/1.9) with SMTP id NAA19120 for ; Wed, 15 Jul 1998 13:23:24 -0500 (CDT) Received: from burford from [207.136.60.136] by mail.airmail.net (/\##/\ Smail3.1.30.16 #30.249) with smtp for sender: id ; Wed, 15 Jul 98 13:23:22 -0500 (CDT) From: "Harry Burford" To: Subject: RE: [TACGPS:1735] USNO to Celebrate Millennium with Time Ball Date: Wed, 15 Jul 1998 13:23:20 -0500 Message-ID: <000001bdb01d$a5c2f740$ac1c658f@burford> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook 8.5, Build 4.71.2173.0 Importance: Normal In-Reply-To: <00c401bdaf98$a52cac20$37968318@beatgr.ce.mediaone.net> X-MimeOLE: Produced By Microsoft MimeOLE V4.72.3110.3 Two Roman bankers were talking back in the year one. One turns to the other and says, "here it is April already and I'm still writing zero on all my checks!" I don't think there is any way to educate the world that 2001 starts the new millennium and not 2000. This has been a constant source for argument. Best comment was to ask the 2000 proponent to assume a child was born in 1981. What year do you celebrate that childs 10th birthday? Then relate the answer back to the calendar starting at 1. The USNO doing a celebration of both 2000 and 2001 is an extremely good decision. HB - KA0TTY -----Original Message----- From: tacgps@tapr.org [mailto:tacgps@tapr.org] On Behalf Of gregory.beat@mediaone.net Sent: Tuesday, July 14, 1998 9:32 PM To: tacgps@tapr.org Subject: [TACGPS:1735] USNO to Celebrate Millennium with Time Ball Since this TAPR group is concerned with time ... an appropriate news release. ---------------------------------------------------------------------------- NEWS! from the NAVAL OBSERVATORY U.S. Naval Observatory Public Affairs Office For Immediate Release. Press Contact: Dr. Steven J. Dick 8 July 1998 Press Contact: Geoff Chester ---------------------------------------------------------------------------- U.S. Naval Observatory to Celebrate Millennium with Washington Time Ball The U.S. Naval Observatory, which maintains the Master Clock of the United States, will usher in the years 2000 and 2001 by dropping a time ball from the telescope dome atop its main building in Washington, D.C. *** text deleted in the reply to save space *** ---------------------------------------------------------------------------- NOTE: Illustrations supporting this release are available at http://www.usno.navy.mil/millrel.html ILLUSTRATION CAPTIONS: [Illustration 1] Earliest evidence of a time ball at the Naval Observatory. >From Astronomical Observations (1845) of the U. S. Naval Observatory. Washington: J. & S. Gideon, 1846. [Illustration 2] Washington time ball. >From Executive Office Building; General Services Administration Historical Study No. 3, Washington: Government Printing Office, 1970 [Illustration 3] >From Harper's New Monthly Magazine, 56 (1878), 655-71 ---------------------------- G. Beat W9GB From wd5ivd@tapr.org Thu Jul 16 09:41:06 1998 Received: from [169.203.249.107] ([169.203.249.107]) by tapr.org (8.7.5/8.7.3/1.9) with ESMTP id JAA26393; Thu, 16 Jul 1998 09:40:58 -0500 (CDT) Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Message-Id: Date: Thu, 16 Jul 1998 09:43:23 -0600 To: "APRS SIG list mailing", "NETSIG list mailing", " tacgps " From: "Greg Jones, WD5IVD" Subject: Dinner w/ Greg in KS ;-) A time and date has been set. This weekend it will be. Sunday, 18 July, 5:30 pm at Free State Brewery, downtown Lawrence, KS (in that town with the "other" Kansas University as Lloyd Verhage stated). Sunday is my only free night while teaching. If you are coming, be sure to rsvp with lloyd (verhage@humec.ksu.edu) Cheers - Greg, WD5IVD ----- Greg Jones, WD5IVD Austin, Texas wd5ivd@tapr.org http://www.tapr.org/~wd5ivd From wd5ivd@tapr.org Thu Jul 16 19:00:03 1998 Received: from [169.203.249.107] ([169.203.249.107]) by tapr.org (8.7.5/8.7.3/1.9) with ESMTP id SAA29387; Thu, 16 Jul 1998 18:59:57 -0500 (CDT) Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Message-Id: In-Reply-To: <3.0.32.19980716171237.006ded08@mail.midusa.net> Date: Thu, 16 Jul 1998 18:59:38 -0600 To: netsig@tapr.org From: "Greg Jones, WD5IVD" Subject: Re: Dinner w/ Greg in KS ;-) Cc: "APRS SIG list mailing", " tacgps " Hi Sid. I took the date from someone else without looking. It is Sunday, not matter what date got listed. Greg > >Well .... is it Sunday (the 19th) or Saturday (the 18th)??? :-) > >Sid Ashen-Brenner Salina, Ks. Monitor Service Co. >Internet : sashen@midusa.net >AX-25 : n0obm @ n0obm.#ncks.ks.usa.noam ----- Greg Jones, WD5IVD Austin, Texas wd5ivd@tapr.org http://www.tapr.org/~wd5ivd From kjordan@compuserve.com Sun Jul 19 08:55:20 1998 Received: from hil-img-6.compuserve.com (hil-img-6.compuserve.com [149.174.177.136]) by tapr.org (8.7.5/8.7.3/1.9) with ESMTP id IAA23800 for ; Sun, 19 Jul 1998 08:55:19 -0500 (CDT) Received: (from mailgate@localhost) by hil-img-6.compuserve.com (8.8.6/8.8.6/2.12) id JAA08746 for tacgps@tapr.org; Sun, 19 Jul 1998 09:54:47 -0400 (EDT) Date: Sun, 19 Jul 1998 09:54:21 -0400 From: Kelly Jordan Subject: Rockwell Jupiter GPS Sender: Kelly Jordan To: Blind.Copy.Receiver@compuserve.com Message-ID: <199807190954_MC2-5388-E771@compuserve.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=ISO-8859-1 Content-Disposition: inline Has anybody done a comparison of the Rockwell Jupiter GPS board against the Motorola Oncore VP in terms of DGPS useage? - Kelly VE3OTK From kjordan@compuserve.com Sun Jul 19 08:55:20 1998 Received: from dub-img-5.compuserve.com (dub-img-5.compuserve.com [149.174.206.135]) by tapr.org (8.7.5/8.7.3/1.9) with ESMTP id IAA23801 for ; Sun, 19 Jul 1998 08:55:19 -0500 (CDT) Received: (from root@localhost) by dub-img-5.compuserve.com (8.8.6/8.8.6/2.12) id JAA12505 for tacgps@tapr.org; Sun, 19 Jul 1998 09:54:47 -0400 (EDT) Date: Sun, 19 Jul 1998 09:54:18 -0400 From: Kelly Jordan Subject: Datums and Oncore Sender: Kelly Jordan To: Blind.Copy.Receiver@compuserve.com Message-ID: <199807190954_MC2-5388-E770@compuserve.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=ISO-8859-1 Content-Disposition: inline When the Motorola Oncore is set up with TAC32 to do DGPS, what Datum is it using? I think it is using WGS84, but am not certain. - Kelly VE3OTK From rick@cnssys.com Sun Jul 19 09:14:40 1998 Received: from gw.cnssys.com (root@cnssys.com [207.97.17.1]) by tapr.org (8.7.5/8.7.3/1.9) with ESMTP id JAA24542 for ; Sun, 19 Jul 1998 09:14:39 -0500 (CDT) Received: from rick (rick.cnssys.com [207.97.17.16]) by gw.cnssys.com (8.9.0/8.9.0) with SMTP id KAA19106 for ; Sun, 19 Jul 1998 10:14:35 -0400 From: "Richard M. Hambly" To: Subject: RE: [TACGPS:1742] Datums and Oncore Date: Sun, 19 Jul 1998 10:14:35 -0400 Message-ID: <001901bdb31f$8eb7a500$101161cf@rick.cnssys.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook 8.5, Build 4.71.2173.0 X-MimeOLE: Produced By Microsoft MimeOLE V4.72.3110.3 In-Reply-To: <199807190954_MC2-5388-E770@compuserve.com> Importance: Normal Yes, it is using WGS84. Rick, WB2TNL -----Original Message----- From: tacgps@tapr.org [mailto:tacgps@tapr.org]On Behalf Of Kelly Jordan Sent: Sunday, July 19, 1998 10:00 AM To: tacgps@tapr.org Subject: [TACGPS:1742] Datums and Oncore When the Motorola Oncore is set up with TAC32 to do DGPS, what Datum is it using? I think it is using WGS84, but am not certain. - Kelly VE3OTK From srbible@gate.net Sun Jul 19 11:24:06 1998 Received: from onondaga.gate.net (root@onondaga.gate.net [198.206.134.31]) by tapr.org (8.7.5/8.7.3/1.9) with ESMTP id LAA29592 for ; Sun, 19 Jul 1998 11:24:04 -0500 (CDT) Received: from supply.camcomp.com (ga2-89.camcomp.com [208.5.76.89]) by onondaga.gate.net (8.8.6/8.6.12) with SMTP id MAA180534 for ; Sun, 19 Jul 1998 12:21:36 -0400 Message-Id: <3.0.5.32.19980719122239.0079a9a0@pop.gate.net> X-Sender: srbible@pop.gate.net X-Mailer: QUALCOMM Windows Eudora Light Version 3.0.5 (32) Date: Sun, 19 Jul 1998 12:22:39 -0400 To: tacgps@tapr.org From: "Steven R. Bible" Subject: Re: [TACGPS:1743] RE: Datums and Oncore In-Reply-To: <001901bdb31f$8eb7a500$101161cf@rick.cnssys.com> References: <199807190954_MC2-5388-E770@compuserve.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" The default datum setting for the Oncore is WGS84. You can change it if you want. FOr DGPS, you want both the reference station and remote receivers using the same datum. - Steve At 09:15 AM 7/19/98 -0500, you wrote: >Yes, it is using WGS84. > >Rick, WB2TNL > >-----Original Message----- >From: tacgps@tapr.org [mailto:tacgps@tapr.org]On Behalf Of Kelly Jordan >Sent: Sunday, July 19, 1998 10:00 AM >To: tacgps@tapr.org >Subject: [TACGPS:1742] Datums and Oncore > > >When the Motorola Oncore is set up with TAC32 to do DGPS, what Datum is >it using? I think it is using WGS84, but am not certain. > >- Kelly VE3OTK > > From eac@shore.net Sun Jul 19 20:28:32 1998 Received: from mermaid.shore.net (mermaid.shore.net [207.244.124.6]) by tapr.org (8.7.5/8.7.3/1.9) with SMTP id UAA02312 for ; Sun, 19 Jul 1998 20:28:31 -0500 (CDT) Received: from lynnma-07-88.port.shore.net (lynnma-07-88) [207.244.109.88] by mermaid.shore.net with smtp (Exim) id 0yy4kZ-0007GB-00; Sun, 19 Jul 1998 21:28:23 -0400 Message-ID: <35B28F2D.7069@shore.net> Date: Sun, 19 Jul 1998 20:28:29 -0400 From: "Eric A. Cottrell" X-Mailer: Mozilla 2.02 (OS/2; I) MIME-Version: 1.0 To: tacgps@tapr.org Subject: Centennial PCMCIA SatNav GPS Card References: <199807190954_MC2-5388-E771@compuserve.com> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Hello, I think I am getting as bad as Doc Tom in regards to my GPS collection. I already have Garmins (45, 12xl, GPS-10), and a Delorme Tripmate (Rockwell Zodiac Chipset). A man with one GPS reciever knows where he is, a man with two GPS receivers is never sure. So I was at the MIT fleamarket today and saw someone selling GPS receivers that nearly fits in a PCMCIA slot (the antenna part of it sticks out of the laptop). No indication of who really made it on the box but I figure for $75 I would take a chance. It is a Rockwell card and it included the optional 6' mag mount and cable attachment! I did some searching on it and it appears to be a 9 channel receiver multiplexed (5 actual channels) based on Rockwell NavCore. The card looks like a serial port software-wise. One "problem" is the data output is Rockwell Binary (I have some docs). Fortunely SA 5.0 can understand this format but can not display the number of satellites it is seeing, what satellites it sees, etc. No chance of APRS usage. The other "problem" is it does not seem to provide 5 volts on the antenna input so active antennas are out. I tried it out and it took awhile for a cold-search. It seemed to work better with the antenna on the magnetic mount. I ran a short road test with the mag mount on top. I was droping into 2-D and ocassional loss of signal. I would put the performance between that of the 45 and the 12xl. It is kinda neat to have a small and simple setup to work with my laptop. I suppose I could get one of the GPS ready TNCs and run my 12xl in that while runing the Centennial into SA5. Too bad the Mic-E does not have a PCMCIA slot 8->. So does anyone have any more information, tips, etc, about this card? It seems Rockwell has taken off information on this card from their website. Centennial has very little info as well. Can the firmware in it be updated? Is it worth $75? I thought based on a 12 channel tripmate going for $135 or so that a 5 channel for $75 was about right. Unfortunely old GPS receivers seem to be cheap these days but this seemed to have some added value due to the PCMCIA form factor. 73 Eric eac@shore.net WB1HBU From Garwood745@aol.com Mon Jul 20 20:01:43 1998 Received: from imo26.mx.aol.com (imo26.mx.aol.com [198.81.17.70]) by tapr.org (8.7.5/8.7.3/1.9) with ESMTP id UAA25912 for ; Mon, 20 Jul 1998 20:01:42 -0500 (CDT) From: Garwood745@aol.com Received: from Garwood745@aol.com by imo26.mx.aol.com (IMOv14_b1.1) id VNDGa04521 for ; Mon, 20 Jul 1998 21:00:59 +2000 (EDT) Message-ID: <24c324cc.35b3e84c@aol.com> Date: Mon, 20 Jul 1998 21:00:59 EDT To: tacgps@tapr.org Mime-Version: 1.0 Subject: Re: [TACGPS:1745] Centennial PCMCIA SatNav GPS Card Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7bit X-Mailer: AOL 3.0 for Windows 95 sub 49 I have the same card, i bet on my magellan pathmaster (the car nav unit) that i sell at one of my stores. I will call magellan this week. what do you have for a model number? I have been looking for data on this card for some time. gary woodward hurley's auto audio McLean, va. From bryan@bmumford.com Wed Jul 22 12:41:21 1998 Received: from acme.sb.west.net (acme.sb.west.net [205.254.224.2]) by tapr.org (8.7.5/8.7.3/1.9) with ESMTP id MAA03542 for ; Wed, 22 Jul 1998 12:41:19 -0500 (CDT) Received: from [207.71.222.144] (pm8-41.sba1.avtel.net [207.71.222.191]) by acme.sb.west.net (8.9.0.Beta5/8.9.0.Beta5) with ESMTP id KAA22828 for ; Wed, 22 Jul 1998 10:41:39 -0700 (PDT) X-Sender: mumford@mail.west.net Message-Id: In-Reply-To: <24c324cc.35b3e84c@aol.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Date: Wed, 22 Jul 1998 10:38:49 -0800 To: tacgps@tapr.org From: Bryan Mumford Subject: tiny connector pins needed I have one of the GPS-30 receivers and I need to add a line for the 1 pps signal. However, I don't have any tiny crimp connector nearly small enough to go into that housing. Can someone mail me two or three of these at some cost, or can you direct me to a DigiKey part number? Bryan Mumford Santa Barbara, California http://www.bmumford.com From w5rkn@amsat.org Wed Jul 22 14:44:04 1998 Received: from mail1.realtime.net (mail1.realtime.net [205.238.128.217]) by tapr.org (8.7.5/8.7.3/1.9) with SMTP id OAA09976 for ; Wed, 22 Jul 1998 14:44:00 -0500 (CDT) Received: (qmail 22270 invoked from network); 22 Jul 1998 19:24:38 -0000 Received: from zoom.realtime.net (HELO zoom.bga.com) (root@205.238.128.40) by mail1.realtime.net with SMTP; 22 Jul 1998 19:24:38 -0000 Received: from amsat.org (apm7-216.realtime.net [204.96.0.216]) by zoom.bga.com (8.6.12/8.6.12) with ESMTP id OAA06335 for ; Wed, 22 Jul 1998 14:24:26 -0500 Message-ID: <35B63C48.107EDEAE@amsat.org> Date: Wed, 22 Jul 1998 14:23:52 -0500 From: "Ronald G. Parsons" X-Mailer: Mozilla 4.05 [en] (Win95; I) MIME-Version: 1.0 To: tacgps@tapr.org Subject: Re: [TACGPS:1747] tiny connector pins needed References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Have you checked with the TAPR office? Bryan Mumford wrote: > > I have one of the GPS-30 receivers and I need to add a line for the 1 pps > signal. However, I don't have any tiny crimp connector nearly small enough > to go into that housing. Can someone mail me two or three of these at some > cost, or can you direct me to a DigiKey part number? > > Bryan Mumford > Santa Barbara, California > http://www.bmumford.com -- Ron Parsons W5RKN From buoy@redshift.com Sat Jul 25 10:25:06 1998 Received: from mail.redshift.com (redshift.com [209.54.200.6]) by tapr.org (8.7.5/8.7.3/1.9) with ESMTP id KAA04956 for ; Sat, 25 Jul 1998 10:25:03 -0500 (CDT) Received: from buoy.mcktech.com (pm3-115.sal.redshift.com [207.204.198.115]) by mail.redshift.com (8.8.8/8.8.8) with SMTP id IAA17648 for ; Sat, 25 Jul 1998 08:25:01 -0700 Message-ID: <000e01bdb7df$a9111160$73c6cccf@buoy.mcktech.com> From: "Doug McKinney" To: Subject: Re: [TACGPS:1747] tiny connector pins needed Date: Sat, 25 Jul 1998 08:19:40 -0700 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 4.72.2106.4 X-MimeOLE: Produced By Microsoft MimeOLE V4.72.2106.4 -----Original Message----- From: Bryan Mumford To: tacgps@tapr.org Date: Wednesday, July 22, 1998 11:00 AM Subject: [TACGPS:1747] tiny connector pins needed >I have one of the GPS-30 receivers and I need to add a line for the 1 pps >signal. However, I don't have any tiny crimp connector nearly small enough >to go into that housing. Can someone mail me two or three of these at some >cost, or can you direct me to a DigiKey part number? > > >Bryan Mumford >Santa Barbara, California >http://www.bmumford.com > Bryan, send me your address and I will send you 2 connectors crimped to wires, at no cost. Your inventions are really creative and neat. Are you marketing your toys or just building a few for fun? Doug KC3RL (408)663-4999 From ebs@lanl.gov Tue Jul 28 17:29:33 1998 Received: from mailman.lanl.gov (mailman.lanl.gov [128.165.5.1]) by tapr.org (8.7.5/8.7.3/1.9) with ESMTP id RAA21410 for ; Tue, 28 Jul 1998 17:29:31 -0500 (CDT) Received: from newreg.lanl.gov (newreg.lanl.gov [128.165.3.60]) by mailman.lanl.gov (8.9.0/8.9.0/(cic-5, 5/21/98)) with ESMTP id QAA24989 for ; Tue, 28 Jul 1998 16:29:29 -0600 Received: from [128.165.7.174] (transitory26.lanl.gov [128.165.7.174]) by newreg.lanl.gov (8.8.8/(cic-5, 10/28/97)) with SMTP id QAA06756 for ; Tue, 28 Jul 1998 16:29:27 -0600 (MDT) Message-Id: <199807282229.QAA06756@newreg.lanl.gov> Subject: Scarce part for QST GPS-VCXO Controller Date: Tue, 28 Jul 1998 16:31:40 -0600 x-sender: ebs@biophysics.lanl.gov x-mailer: Claris Emailer 2.0v3, January 22, 1998 From: Brooks Shera To: Mime-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Just a note for those who are building the controller described in my article in the July '98 QST The Burr-Brown DAC PCM16P is now out of stock at DigiKey, Arrow, AND Sager Electronics. However, B-B is still making them, contrary to what DigiKey will tell you. The only source at the moment is Insight Electronics (800) 677-7716. They have the PCM61K version (170 in stock), which has higher specs according to B-B and should work fine in the controller. The bad news is it costs a bit more ($14.20), but the good news is that Insight has no minimum order. I am trying to get DigiKey to restock the 61P since they seem to sell out pretty fast but I may not have any luck. If anyone has a contact with influence at DigiKey please let me know. Brooks From tvb@veritas.com Tue Jul 28 19:09:01 1998 Received: from athena.veritas.com (athena.veritas.com [192.203.46.191]) by tapr.org (8.7.5/8.7.3/1.9) with ESMTP id TAA06355 for ; Tue, 28 Jul 1998 19:08:58 -0500 (CDT) Received: from megami.veritas.com (megami.veritas.com [192.203.46.101]) by athena.veritas.com (8.9.0/8.9.0) with SMTP id RAA03943 for ; Tue, 28 Jul 1998 17:08:55 -0700 (PDT) Received: from v-tomvb6 by megami.veritas.com with smtp (Smail3.1.29.0 #7) id m0z1JnZ-0000NEC; Tue, 28 Jul 98 17:08 PDT Message-ID: <35BE656E.66EA@veritas.com> Date: Tue, 28 Jul 1998 16:57:34 -0700 From: Tom Van Baak Reply-To: tvb@veritas.com Organization: VERITAS Software X-Mailer: Mozilla 3.01 (WinNT; I) MIME-Version: 1.0 To: tacgps@tapr.org Subject: Re: [TACGPS:1750] Scarce part for QST GPS-VCXO Controller References: <199807282229.QAA06756@newreg.lanl.gov> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Brooks Shera wrote: > > Just a note for those who are building the controller > described in my article in the July '98 QST > > The Burr-Brown DAC PCM16P is now out of stock at DigiKey, Arrow, > AND Sager Electronics. You sure picked an interesting way to find out how many people are building your kit. ;-) How many PCBs has A&A sold? /tvb From jpringle@tampabay.rr.com Wed Jul 29 08:53:45 1998 Received: from mail-atm.tampabay.rr.com (ns.tampabay.rr.com [24.92.0.1]) by tapr.org (8.7.5/8.7.3/1.9) with ESMTP id IAA26231 for ; Wed, 29 Jul 1998 08:53:44 -0500 (CDT) Received: from john (dt0c0n5f.tampabay.rr.com [24.92.29.95]) by mail-atm.tampabay.rr.com (8.8.7/8.8.8) with SMTP id JAA01918 for ; Wed, 29 Jul 1998 09:48:51 -0400 (EDT) From: "John K. Pringle" To: "TAC-2 mail list" Subject: GPS controller as TAPR kit? Date: Wed, 29 Jul 1998 09:53:23 -0400 Message-ID: <000001bdbaf8$40dca660$5f1d5c18@john.tampabay.rr.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook 8.5, Build 4.71.2173.0 Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V4.72.2106.4 Looks like the popularity of Brooks Shera's GPS controller has produced a shortage of critical parts. The demand for parts has evidently exceeded the supply. Might be a good idea for TAPR to locate the necessary parts and order a large supply. I believe a TAPR kit would be extremely popular and be a good fund raiser. Should be just as popular as the TAC-2 and other TAPR kits. Brooks might even offer 24-hour toll-free tech support as part of the deal (just kidding, Brooks). 73 John W4SF From ebs@lanl.gov Wed Jul 29 13:24:58 1998 Received: from mailman.lanl.gov (mailman.lanl.gov [128.165.5.1]) by tapr.org (8.7.5/8.7.3/1.9) with ESMTP id NAA08984 for ; Wed, 29 Jul 1998 13:24:57 -0500 (CDT) Received: from newreg.lanl.gov (newreg.lanl.gov [128.165.3.60]) by mailman.lanl.gov (8.9.0/8.9.0/(cic-5, 5/21/98)) with ESMTP id MAA16021 for ; Wed, 29 Jul 1998 12:24:56 -0600 Received: from [128.165.7.163] (transitory37.lanl.gov [128.165.7.163]) by newreg.lanl.gov (8.8.8/(cic-5, 10/28/97)) with SMTP id MAA11819 for ; Wed, 29 Jul 1998 12:24:54 -0600 (MDT) Message-Id: <199807291824.MAA11819@newreg.lanl.gov> Subject: Re: [TACGPS:1751] Re: Scarce part for QST GPS-VCXO Controller Date: Wed, 29 Jul 1998 12:27:09 -0600 x-sender: ebs@biophysics.lanl.gov x-mailer: Claris Emailer 2.0v3, January 22, 1998 From: Brooks Shera To: Mime-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Tom Van Baak wrote: >Brooks Shera wrote: >> >> Just a note for those who are building the controller >> described in my article in the July '98 QST >> >> The Burr-Brown DAC PCM16P is now out of stock at DigiKey, Arrow, >> AND Sager Electronics. > >You sure picked an interesting way to find out how many >people are building your kit. ;-) > >How many PCBs has A&A sold? Last time I checked with Stas at A&A the article had been out about 2-3 weeks and he was approaching 100 sold. Since then I don't know, but requests to me for programmed PICs have been pretty constant. Stas said to expect a big surge when QST gets to Europe, etc in 2-3 months. Apparently non-US hams are the more active builders these days. Brooks From jra@febo.com Thu Jul 30 19:28:03 1998 Received: from meow.febo.com (root@meow.febo.com [209.115.70.194]) by tapr.org (8.7.5/8.7.3/1.9) with ESMTP id TAA09523; Thu, 30 Jul 1998 19:27:59 -0500 (CDT) Received: from meow.febo.com (jra@localhost [127.0.0.1]) by meow.febo.com (8.8.5/8.8.5) with ESMTP id UAA12935; Thu, 30 Jul 1998 20:27:57 -0400 Message-Id: <199807310027.UAA12935@meow.febo.com> X-Mailer: exmh version 1.6.9 8/22/96 To: tacgps@tapr.org, net-sig@tapr.org, tcp-group@ucsd.edu Subject: Help finding source for Z85C30 SCC Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Thu, 30 Jul 1998 20:27:57 -0400 From: John Ackermann N8UR Sorry for the slightly off-topic post, but I have an Ottawa PI card with a blown Z85C30 SCC chip, and I'm having a devil of a time finding a source for a replacement. Neither Digikey, Jameco, nor Mouser show it in their indexes. Any ideas of who stocks these things and is willing to sell in small quantities? Thanks, John N8UR jra@febo.com http://www.febo.com From glittle@awod.com Thu Jul 30 19:55:32 1998 Received: from sumter.awod.com (sumter.awod.com [208.140.99.1]) by tapr.org (8.7.5/8.7.3/1.9) with ESMTP id TAA11478 for ; Thu, 30 Jul 1998 19:55:31 -0500 (CDT) Received: from chs0155.awod.com (chs0120.awod.com [208.140.96.120]) by sumter.awod.com (8.8.7/8.8.8) with SMTP id UAA06514 for ; Thu, 30 Jul 1998 20:55:29 -0400 (EDT) (envelope-from glittle@awod.com) Message-Id: <3.0.5.16.19980730205319.32270d76@awod.com> X-Sender: glittle@awod.com X-Mailer: QUALCOMM Windows Eudora Light Version 3.0.5 (16) Date: Thu, 30 Jul 1998 20:53:19 -0400 To: tacgps@tapr.org From: Glenn Little Subject: Re: [TACGPS:1754] Help finding source for Z85C30 SCC In-Reply-To: <199807310027.UAA12935@meow.febo.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Is a Zilog Z8030 CS Z-SCC the same? Package 40 pin ceramic. At 07:30 PM 7/30/98 -0500, you wrote: >Sorry for the slightly off-topic post, but I have an Ottawa PI card >with a blown Z85C30 SCC chip, and I'm having a devil of a time finding >a source for a replacement. Neither Digikey, Jameco, nor Mouser show >it in their indexes. > >Any ideas of who stocks these things and is willing to sell in small >quantities? > >Thanks, > >John N8UR >jra@febo.com >http://www.febo.com > > > > --------------------------------------------------------------------------- Glenn Little glittle@awod.com QCWA LM 28417 Amateur Callsign: WB4UIV wb4uiv@amsat.org AMSAT LM 2178 QTH: Goose Creek, SC USA (EM92xx) ARRL TAPR --------------------------------------------------------------------------- From jra@febo.com Fri Jul 31 06:58:01 1998 Received: from meow.febo.com (root@meow.febo.com [209.115.70.194]) by tapr.org (8.7.5/8.7.3/1.9) with ESMTP id GAA24467 for ; Fri, 31 Jul 1998 06:57:59 -0500 (CDT) Received: from meow.febo.com (jra@localhost [127.0.0.1]) by meow.febo.com (8.8.5/8.8.5) with ESMTP id HAA14967 for ; Fri, 31 Jul 1998 07:57:57 -0400 Message-Id: <199807311157.HAA14967@meow.febo.com> To: tacgps@tapr.org Subject: Re: [TACGPS:1755] Re: Help finding source for Z85C30 SCC In-reply-to: Your message of "Thu, 30 Jul 1998 20:01:55 CDT." <3.0.5.16.19980730205319.32270d76@awod.com> Date: Fri, 31 Jul 1998 07:57:57 -0400 From: John Ackermann N8UR Not sure -- this is the CMOS version of the Z8530 SCC; don't know if the "CS" means the same thing or not. John ---- In message <3.0.5.16.19980730205319.32270d76@awod.com>, Glenn Little writes: >Is a Zilog Z8030 CS Z-SCC the same? Package 40 pin ceramic. > >At 07:30 PM 7/30/98 -0500, you wrote: >>Sorry for the slightly off-topic post, but I have an Ottawa PI card >>with a blown Z85C30 SCC chip, and I'm having a devil of a time finding >>a source for a replacement. Neither Digikey, Jameco, nor Mouser show >>it in their indexes. >> >>Any ideas of who stocks these things and is willing to sell in small >>quantities? >> >>Thanks, >> >>John N8UR >>jra@febo.com >>http://www.febo.com >> >> >> >> >--------------------------------------------------------------------------- >Glenn Little glittle@awod.com QCWA LM 28417 >Amateur Callsign: WB4UIV wb4uiv@amsat.org AMSAT LM 2178 >QTH: Goose Creek, SC USA (EM92xx) ARRL TAPR >---------------------------------------------------------------------------