From bounce-tacgps-6754@lists.tapr.org Sat Apr 1 02:05:40 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id CAA25076 for ; Sat, 1 Apr 2000 02:05:39 -0600 (CST) Message-Id: X-Sender: bagi@stars.ch Date: Sat, 01 Apr 2000 10:02:24 +0200 To: "TAPR Special Interest Group" From: Mathias Tobler Subject: [tacgps] DGPS base station In-Reply-To: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" X-Message-Id: <4.2.2.20000401095425.00aa3e10@stars.ch> Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk For a research project in Tanzania we need a DGPS base station for realtime correction. Has anyone ever built something like that or knows where to get a complete system that would work with Garmin 12XL and Trimbel GeoExplorer II? I have seen the base station on the TAPR webpage. Some questions to that. Can the Oncore VP be repalced with a newer (available) model? Has anyone built a transmitter for this base station. I am wondering if one could make a transmitter around 300 kHz so that standard beacon recivers could be used. Any ideas? Mathias --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Sat Apr 1 09:30:56 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id JAA12709 for ; Sat, 1 Apr 2000 09:30:54 -0600 (CST) Message-ID: From: "Lyle Johnson" To: "TAPR Special Interest Group" References: Subject: [tacgps] Re: DGPS base station Date: Sat, 1 Apr 2000 15:34:02 +0100 X-Priority: 3 X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2615.200 List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" X-Message-Id: <002301bf9be7$54ba2820$be07340a@tomswift> Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk ----- Original Message ----- From: Mathias Tobler To: TAPR Special Interest Group Sent: Saturday, April 01, 2000 09:02 Subject: [tacgps] DGPS base station > For a research project in Tanzania we need a DGPS base station for realtime > correction. Has anyone ever built something like that or knows where to get > a complete system that would work with Garmin 12XL and Trimbel GeoExplorer > II? Any standard DGPS base station will work. >I have seen the base station on the TAPR webpage. Some questions to > that. Can the Oncore VP be repalced with a newer (available) model Not at this time. > Has > anyone built a transmitter for this base station. I am wondering if one > could make a transmitter around 300 kHz so that standard beacon recivers > could be used. Any ideas? It woul dbe a simple project. I suspect the Ashtech G12 is the lowest cost commercially available base station-capable GPS receiver these days. As to a transmitter, there are all sorts of licensing issues, etc., that have to be taken into account. Lyle --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Sat Apr 1 09:44:31 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id JAA13078 for ; Sat, 1 Apr 2000 09:44:29 -0600 (CST) Sender: bounce-tacgps-6754@lists.tapr.org Message-ID: Date: Sat, 01 Apr 2000 09:46:36 -0600 From: Gerry Creager N5JXS Reply-To: "TAPR Special Interest Group" Organization: DaHouse X-Accept-Language: en MIME-Version: 1.0 To: "TAPR Special Interest Group" Subject: [tacgps] Re: DGPS base station References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio X-Message-Id: <38E619DC.3AD8DECC@cs.tamu.edu> Precedence: bulk Lyle Johnson wrote: > > I suspect the Ashtech G12 is the lowest cost commercially available base > station-capable GPS receiver these days. I concur. FWIW, the Ashtech formats are oublished, and with their hire of a new s/w manager, they are more accessible for help/questions. They recently made available via GPS the code for manipulating several of their Survey and mapping receivers. Gerry -- Gerry Creager Spatial Sciences Laboratory 979.845.7201 Office Texas Agricultural Experiment Station 979.845.2273 Fax Texas A&M University System 979.228.7686 Pager (preferred) College Station, Texas 77843-2120 gerry@page4.tamu.edu Pager: 9792287686@page.metrocall.com "Opinions expressed are mine and do not necessarily represent those of Texas A&M University." --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Sat Apr 1 12:02:28 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id MAA17389 for ; Sat, 1 Apr 2000 12:02:25 -0600 (CST) Message-ID: Date: Sat, 01 Apr 2000 11:00:38 -0700 From: Jeff X-Accept-Language: en MIME-Version: 1.0 To: "TAPR Special Interest Group" Subject: [tacgps] Re: Post Processing References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" X-Message-Id: <38E63946.9860F24B@flash.net> Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk I had not previously heard that the code data and the carrier phase data were not valid at the same epoch. However, there is a command, @@AE which is the "output align" message. Quoting the manual: "This command, when enabled, will align all receiver periodic outputs with the top of the minute." While it is not clear this does what you want with respect to the measurement epoch, I think it would be wise to do all of your characterizations with this command enabled. There are several of us out here that are interested in carrier-phase post- processing. I am attempting to use algorithms from "Linear Algebra, Geodesy, and GPS" by Gilbert Strang and Kai Borre. This book contains Matlab code to do post processing from RINEX files (both the observation files *.*o and the navigation files *.*n are necessary as the broadcast ephemeris is needed.) If you have code that will generate the RINEX files from Motorola binary, are you willing to make it available? It would be a significant step forward.... One hitch with many of the post processing packages is that they need both L1 and L2 data to function. Obviously, working with the Oncore we only have L1 data at the measurement point. However, it one had a CORS site nearby (how near??) that could be used to get dual frequency data and therefore local ionospheric corrections. Jeff Vollin, KC6WFU barnie@flash.net Gerry Creager N5JXS wrote: > "Ira A. Wilner" wrote: > > > I've got a copy of Omni from NGS, written for DOS environment, which will > > do post processing if we can get the VP output into RINEX. This is > > precisely what I await! > > I've got Omni as well as PAGES (which I use for my long-baseline > processing and geodetic work). They are good example sets. What I have > to do now is snag the appropriately time-tagged carrier phase info so we > know what epochs to assign to what. As Tom points out, the carrier > phase information isn't necessarily associated with the code-phase > time-tagging. What we're going to end up doing is characterizing the > latency statistically for several receivers and assigning an offset > value that we consider characteristic of the receiver architecture. > Unless anyone has a better idea! I'm open! > > I also have some code-phase resolution (single difference) code from NGS > that isn't related to Omni or PAGES... That's what I'm probably going to > concentrate on for point-position resolution for this round. > > 73, gerry n5jxs > -- > Gerry Creager Spatial Sciences Laboratory > 979.845.7201 Office Texas Agricultural Experiment Station > 979.845.2273 Fax Texas A&M University System > 979.228.7686 Pager (preferred) College Station, Texas 77843-2120 > gerry@page4.tamu.edu Pager: 9792287686@page.metrocall.com > "Opinions expressed are mine and do not necessarily represent those of > Texas A&M University." > > --- > You are currently subscribed to tacgps as: BARNIE@FLASH.NET > To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Sat Apr 1 15:45:11 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id PAA24637 for ; Sat, 1 Apr 2000 15:45:11 -0600 (CST) Sender: bounce-tacgps-6754@lists.tapr.org Message-ID: Date: Sat, 01 Apr 2000 15:46:46 -0600 From: Gerry Creager N5JXS Reply-To: "TAPR Special Interest Group" Organization: DaHouse X-Accept-Language: en MIME-Version: 1.0 To: "TAPR Special Interest Group" Subject: [tacgps] Re: Post Processing References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio X-Message-Id: <38E66E46.1526571A@cs.tamu.edu> Precedence: bulk Jeff wrote: > > I had not previously heard that the code data and the carrier phase data were > not valid at the same epoch. However, there is a command, @@AE which > is the "output align" message. Quoting the manual: "This command, when > enabled, will align all receiver periodic outputs with the top of the minute." > While it is not clear this does what you want with respect to the measurement > epoch, I think it would be wise to do all of your characterizations with this > command enabled. Unfortunately, it's been my experience that after doing an output align, the code phase data are successfully aligned, but the carrier phase data are lagging. 80-125 ms is the nominal number I remember, but I'm too fogged to recall the variance. > There are several of us out here that are interested in carrier-phase post- > processing. I am attempting to use algorithms from "Linear Algebra, > Geodesy, and GPS" by Gilbert Strang and Kai Borre. This book contains > Matlab code to do post processing from RINEX files (both the observation > files *.*o and the navigation files *.*n are necessary as the broadcast > ephemeris is needed.) If you have code that will generate the RINEX files > from Motorola binary, are you willing to make it available? It would be > a significant step forward.... My personal favorite is GPS Theory and Practice, by B. Hofmann-Wellenhog, H. Lichtenegger, and J. Collins, Springer-Verlag, 4th Ed. 1997. I've looked at Leick, Strang and Borre and Hofmann-Wellinghog et al, and found the latter the best as far as explanations, illustrations and derivations. > One hitch with many of the post processing packages is that they need both > L1 and L2 data to function. Obviously, working with the Oncore we only > have L1 data at the measurement point. However, it one had a CORS site > nearby (how near??) that could be used to get dual frequency data and > therefore local ionospheric corrections. Not necessarily. Not the code I posted earlier. It's L1 only. L2, in most of the Strang/Borre examples, is used to derive iono component delay and correct for that. If you keep your baselines short enough, L1 works just fine, once the integer ambiguity is resolved. The L2 solution can assist in that, and a Widelane solution resolves much faster, but you still bave to resolve the single freq ambiguity at some point. I've done significant work with long baselines using dual-frequency, double difference solutions, and have been routinely achieving network solutions with < 3 cm error both horizontal and vertical. Note that these lines are over 300 km, and most in the range of 1000-1500 km. Single frequency double-difference just won't work here. lines < 300 km, you should be able to resolve the ambiguity and achieve a fixed solution almost every time. Regards, Gerry -- Gerry Creager Spatial Sciences Laboratory 979.845.7201 Office Texas Agricultural Experiment Station 979.845.2273 Fax Texas A&M University System 979.228.7686 Pager (preferred) College Station, Texas 77843-2120 gerry@page4.tamu.edu Pager: 9792287686@page.metrocall.com "Opinions expressed are mine and do not necessarily represent those of Texas A&M University." --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Sun Apr 2 15:55:26 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id PAA18876 for ; Sun, 2 Apr 2000 15:55:25 -0500 (CDT) Message-ID: Date: Sun, 02 Apr 2000 13:53:54 -0700 From: Jeff X-Accept-Language: en MIME-Version: 1.0 To: "TAPR Special Interest Group" Subject: [tacgps] Re: Post Processing References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" X-Message-Id: <38E7B362.935D5123@flash.net> Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk Gerry Creager N5JXS wrote: > Unfortunately, it's been my experience that after doing an output align, > the code phase data are successfully aligned, but the carrier phase data > are lagging. 80-125 ms is the nominal number I remember, but I'm too > fogged to recall the variance. I am a little new to post-processing. How did you determine this offset? > --SNIP-- Not necessarily. Not the code I posted earlier. It's L1 only. I must have missed your post. Could you post the code again? Does it include the Motorla to RINEX converter? Thanks, Jeff Vollin, KC6WFU barnie@flash.net --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Sun Apr 2 17:11:36 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id RAA21640 for ; Sun, 2 Apr 2000 17:11:29 -0500 (CDT) Message-Id: Subject: [tacgps] Re: Post Processing Date: Sun, 2 Apr 2000 15:11:08 -0700 x-sender: ebs@biophysics.lanl.gov From: Brooks Shera To: "TAPR Special Interest Group" Mime-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" X-Message-Id: <200004022209.QAA26278@lawyer.lanl.gov> Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk I have written a program (Mot2Rnx) that reads Oncore VP binary and writes Rinex records that are successfully processed by the Strang-Borre Matlab routines, by GeoGenius (that is, until my trial license expired), and by my own homebrew post-processing software. A plot of the results obtainable with a pair of Oncores is on my webpage (www.rt66.com/~shera). The plot shows the baseline vector between two receivers that were about 3.5 km apart. The vector was computed every 30 seconds for a run lasting about 1/2 hour. At each 30-second interval the integer ambiquity was estimated (using the LAMDBA method published by P. de Jonge and C. Tiberius at the Delft University of Technology) and the baseline vector was calculated. The successive positions typically differ by 100 microns or less (over 3 km baseline!) and during the 1/2 hour run the position drifted 2-3 mm. This slow drift may be due to multipath or incomplete cancellation of ionospheric effects. The data were recorded at the ranch of a friend (N7ZT) in the basin & range country of Nevada, and both receivers were in separate shallow canyons. No special precautions were made to avoid multipath reflections (e.g. no choke rings mounts for the simple Motorola patch antennas). The data were used to establish his property lines so he could put up a fence to keep his neighbors cows off his land. The accuracy of the data appears to be sufficient for the purpose. :-) Anyone who is interested in Mot2Rnx.exe can send me a note, preferably describing what they're up to. A few comments on Mot2Rnx: 1. Depending on what header information your post-processing code expects you might have to edit the ASCII header by hand. I have included the easy stuff I think. 2. Some pp codes (e.g. GeoGenius) doesn't like the (drifting) 20,625 Hz LO offset that Motorola rcvrs add to the carrier phase. I have fixed this in the Rinex output records as well as I can (thanks to Dan Charrois for suggestions regarding this problem). In fact, Mot2Rnx writes an output file that you can plot to watch how your LO frequency drifts over time (an expensive thermometer?). 3. I use TAC32 on a PC to record binary data from the fixed rcvr. The initialization commands I use for the fixed rcvr are: @@AE 01 -- output align @@Ea 3C -- Position/Status @@Eg 1E -- Carrier phase at 30 sec intervals @@Bh 05 -- DGPS output every 5 sec @@Bi 01 -- Ephemeris output (after you start recording) I have to do these by hand with TAC32 (are you listening, Richard?) The rover binary data is recorded by a PalmPilot. The Pilot also initializes the Oncore and displays the current position. The initialization is @@Ea 01, @@Ek 01, @@Eg 1E, and @@AE 01 I usually have a packet radio DGPS link from the fixed rcvr to the rover (to save a little money I transmit Motorola binary dgps messages, not TAPR DGPS style RTCM since the receiving end is an Oncore). DGPS lets me see where the rover is in "real time" with an accuracy of a couple meters or so. The Palm software displays the current and time-averaged DGPS corrected position while it's recording the carrier phase data for processing later. I am presently thinking about recording phase data at 2 fixed stations (that have a known vector between them). The data from the rover and the 2 fixed rcrvs would be analyzed together, the goal being to speed up the estimation of the integer ambiguities. Presently it takes someplace between 2 and 10 minutes of data to do this depending on the geometry of the sats. I wonder if anyone has tried this or has comments on the scheme. Brooks --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Sun Apr 2 22:36:28 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id WAA01195 for ; Sun, 2 Apr 2000 22:36:27 -0500 (CDT) Sender: bounce-tacgps-6754@lists.tapr.org Message-ID: Date: Sun, 02 Apr 2000 22:37:53 -0500 From: Gerry Creager N5JXS Reply-To: "TAPR Special Interest Group" Organization: DaHouse X-Accept-Language: en MIME-Version: 1.0 To: "TAPR Special Interest Group" Subject: [tacgps] Re: Post Processing References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio X-Message-Id: <38E81211.93A0A30D@cs.tamu.edu> Precedence: bulk Jeff wrote: > > Gerry Creager N5JXS wrote: > > > Unfortunately, it's been my experience that after doing an output align, > > the code phase data are successfully aligned, but the carrier phase data > > are lagging. 80-125 ms is the nominal number I remember, but I'm too > > fogged to recall the variance. > > I am a little new to post-processing. How did you determine > this offset? By dent of superhuman effort, and a good mathematica toolset... and having cross-checked the toolset with known results, I calculated the single and double difference baselines. The similar, fixed solutions from the code data were also calculated. They didn't agree, but the code solutions agreed with other software that had used the same antenna and coax, but a Trimble receiver and their Pathfinder software. From that I determined that there was a delta. I did some quick and dirty calculations on the differences but they were neither scientifically undertaken, nor statistically rigorous, and I really don't remember them them exactly, so I'm not reporting them. I need to revisit that (soon!) and do it right. > > --SNIP-- Not necessarily. Not the code I posted earlier. It's L1 only. > > I must have missed your post. Could you post the code again? Does it > include the Motorla to RINEX converter? I'll make it available on page4.tamu.edu for anonymous download. It DOES NOT have the OnCore-to-Rinex converter. I have to revisit, and finish, that, too. http://page4.tamu.edu/Motorola It'll be sometime Monday, 3 APR before it's there. -- Gerry Creager Spatial Sciences Laboratory 979.845.7201 Office Texas Agricultural Experiment Station 979.845.2273 Fax Texas A&M University System 979.228.7686 Pager (preferred) College Station, Texas 77843-2120 gerry@page4.tamu.edu Pager: 9792287686@page.metrocall.com "Opinions expressed are mine and do not necessarily represent those of Texas A&M University." --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Mon Apr 3 06:36:01 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id GAA01833 for ; Mon, 3 Apr 2000 06:36:00 -0500 (CDT) Message-ID: From: "Kirby, Brian" To: "TAPR Special Interest Group" Subject: [tacgps] RE: DGPS base station Date: Mon, 3 Apr 2000 06:33:30 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01BF9D60.6FC647F0" List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" X-Message-Id: Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. ------_=_NextPart_001_01BF9D60.6FC647F0 Content-Type: text/plain I used the Oncore VP to make a DGPS base station. I am using a ham transmitter and a Pacomm Tiny TNC. My handhelds are Garmin 12XLs, GII+, and a 12CX. I use a handheld ham receiver and another Pacomm TNC and input the data into the handheld GPS. Works fine for about 7 miles around, which is not bad for 25 watts and the antenna only being 30 feet in the air. I use TAC32 software to set up and control the Oncore base station. Also use the TAPR DGPS card. It reformats the binary data to RTCM type 1 data, 100 bps. This gives you about 5 meter positioning in real time. The new Oncore (12 channel) has not implemented DGPS generation yet. I understand they plan to do it, later. > ---------- > From: Mathias Tobler[SMTP:bagi@stars.ch] > Reply To: TAPR Special Interest Group > Sent: Saturday, April 01, 2000 3:02 AM > To: TAPR Special Interest Group > Subject: [tacgps] DGPS base station > > For a research project in Tanzania we need a DGPS base station for > realtime > correction. Has anyone ever built something like that or knows where to > get > a complete system that would work with Garmin 12XL and Trimbel GeoExplorer > > II? I have seen the base station on the TAPR webpage. Some questions to > that. Can the Oncore VP be repalced with a newer (available) model? Has > anyone built a transmitter for this base station. I am wondering if one > could make a transmitter around 300 kHz so that standard beacon recivers > could be used. Any ideas? > > Mathias > > > --- > You are currently subscribed to tacgps as: brian.kirby@msfc.nasa.gov > To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org > ------_=_NextPart_001_01BF9D60.6FC647F0 Content-Type: text/html Content-Transfer-Encoding: quoted-printable RE: [tacgps] DGPS base station

I used the Oncore VP = to make a DGPS base station.  I am using a ham transmitter and a = Pacomm Tiny TNC.  My handhelds are Garmin 12XLs, GII+, and a = 12CX.  I use a handheld ham receiver and another Pacomm TNC and = input the data into the handheld GPS.  Works fine for about 7 = miles around, which is not bad for 25 watts and the antenna only being = 30 feet in the air.  I use TAC32 software to set up and control = the Oncore base station.  Also use the TAPR DGPS card.  It = reformats the binary data to RTCM type 1 data, 100 bps.  This = gives you about 5 meter positioning in real time. 

The new Oncore (12 = channel) has not implemented DGPS generation yet.  I understand = they plan to do it, later.



    ----------
    From:   = Mathias = Tobler[SMTP:bagi@stars.ch]
    Reply To: =       TAPR Special Interest Group
    Sent:   = Saturday, April 01, 2000 3:02 = AM
    To: =     TAPR Special = Interest Group
    Subject: =        [tacgps] DGPS base station

    For a research project in Tanzania we = need a DGPS base station for realtime
    correction. Has anyone ever built = something like that or knows where to get
    a complete system that would work = with Garmin 12XL and Trimbel GeoExplorer
    II? I have seen the base station on = the TAPR webpage. Some questions to
    that. Can the Oncore VP be repalced = with a newer (available) model? Has
    anyone built a transmitter for this = base station. I am wondering if one
    could make a transmitter around 300 = kHz so that standard beacon recivers
    could be used. Any ideas?

    Mathias


    ---
    You are currently subscribed to = tacgps as: brian.kirby@msfc.nasa.gov
    To unsubscribe send a blank email to = leave-tacgps-6754G@lists.tapr.org

------_=_NextPart_001_01BF9D60.6FC647F0-- --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Wed Apr 5 00:29:06 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id AAA01484 for ; Wed, 5 Apr 2000 00:29:04 -0500 (CDT) Mime-Version: 1.0 X-Sender: trcox@postoffice.att.net Message-Id: Date: Tue, 4 Apr 2000 22:32:35 -0500 To: "TAPR Special Interest Group" From: Tom Cox Subject: [tacgps] GPS Book Content-Type: text/plain; charset="us-ascii" ; format="flowed" List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" X-Message-Id: Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk Someone recently mentioned (and endorsed) a book here: "My personal favorite is GPS Theory and Practice, by B. Hofmann-Wellenhog, H. Lichtenegger, and J. Collins, Springer-Verlag, 4th Ed. 1997." Amazon.com and Springer-Verlag web sites don't recognize this title. Any idea where to find it? --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Wed Apr 5 01:20:27 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id BAA02783 for ; Wed, 5 Apr 2000 01:20:24 -0500 (CDT) Sender: bounce-tacgps-6754@lists.tapr.org Message-ID: Date: Wed, 05 Apr 2000 01:22:25 -0500 From: Gerry Creager N5JXS Reply-To: "TAPR Special Interest Group" Organization: DaHouse X-Accept-Language: en MIME-Version: 1.0 To: "TAPR Special Interest Group" Subject: [tacgps] Re: GPS Book References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio X-Message-Id: <38EADBA1.39DD8F74@cs.tamu.edu> Precedence: bulk Tom Cox wrote: > > Someone recently mentioned (and endorsed) a book here: "My personal > favorite is GPS Theory and Practice, by B. Hofmann-Wellenhog, H. > Lichtenegger, and J. Collins, Springer-Verlag, 4th Ed. 1997." > > Amazon.com and Springer-Verlag web sites don't recognize this title. > Any idea where to find it? A quick search on amazon.com using the author's last name (hofmann-wellinghog) yielded a quick hit, $5495, usually ships in 24 hrs. That price, by the way is what they call "competetive" in some circles. Gerry n5jxs -- Gerry Creager Spatial Sciences Laboratory 979.845.7201 Office Texas Agricultural Experiment Station 979.845.2273 Fax Texas A&M University System 979.228.7686 Pager (preferred) College Station, Texas 77843-2120 gerry@page4.tamu.edu Pager: 9792287686@page.metrocall.com "Opinions expressed are mine and do not necessarily represent those of Texas A&M University." --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Wed Apr 5 07:55:22 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id HAA21223 for ; Wed, 5 Apr 2000 07:55:20 -0500 (CDT) Message-ID: From: "Steve Sampson" To: "TAPR Special Interest Group" References: Subject: [tacgps] Re: GPS Book Date: Wed, 5 Apr 2000 07:55:24 -0500 Organization: USA Site Network MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2919.6600 List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" X-Message-Id: <000801bf9efe$35bb1c80$8e228cd1@spacewar.net> Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk Most Springer-Verlog and Artech House books are best looked at in a library first. Only rarely is the whole book useful, or one in which you would treasure on your home shelf. ----- Original Message ----- > A quick search on amazon.com using the author's last name > (hofmann-wellinghog) yielded a quick hit, $5495, usually ships in 24 > hrs. > > That price, by the way is what they call "competetive" in some circles. --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Wed Apr 5 09:21:47 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id JAA23395 for ; Wed, 5 Apr 2000 09:21:43 -0500 (CDT) Sender: bounce-tacgps-6754@lists.tapr.org Message-ID: Date: Wed, 05 Apr 2000 09:23:33 -0500 From: Gerry Creager N5JXS Reply-To: "TAPR Special Interest Group" Organization: DaHouse X-Accept-Language: en MIME-Version: 1.0 To: "TAPR Special Interest Group" Subject: [tacgps] Re: GPS Book References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio X-Message-Id: <38EB4C65.409E5FD@cs.tamu.edu> Precedence: bulk Steve Sampson wrote: > > Most Springer-Verlog and Artech House books are best looked at > in a library first. Only rarely is the whole book useful, or one in which > you would treasure on your home shelf. This one, however, is a keeper. It's what I plan to teach from when we get the GPS courses on the books. It beats Alfred Leick's books hands-down, and has some of the best treatments on theory and exercises for the newcomer I've seen. -- Gerry Creager Spatial Sciences Laboratory 979.845.7201 Office Texas Agricultural Experiment Station 979.845.2273 Fax Texas A&M University System 979.228.7686 Pager (preferred) College Station, Texas 77843-2120 gerry@page4.tamu.edu Pager: 9792287686@page.metrocall.com "Opinions expressed are mine and do not necessarily represent those of Texas A&M University." --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Thu Apr 6 06:25:20 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id GAA18110 for ; Thu, 6 Apr 2000 06:25:20 -0500 (CDT) Date: Thu, 6 Apr 2000 6:24:37 Subject: [tacgps] Re: tacgps digest: March 30, 2000 To: "TAPR Special Interest Group" From: "Brian Kirby" List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" Sender: bounce-tacgps-6754@lists.tapr.org Message-Id: Precedence: bulk GrafNav has a demo, but its limited to processing the data that comes with it. --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Thu Apr 6 11:12:35 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id LAA25502 for ; Thu, 6 Apr 2000 11:12:35 -0500 (CDT) From: "Chris Dapples" To: "TAPR Special Interest Group" Subject: [tacgps] Using TAC-2 on network Date: Thu, 6 Apr 2000 10:14:33 -0600 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2919.6700 List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" X-Message-Id: Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk Hi All, Some time ago there was a posting on how to setup the TAC-2 to set the time on all computers on a Linux network. I am wondering if someone knows how to do this for a Windows2000 network? Chris/KF7KN ccdapple@wtp.net --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Thu Apr 6 12:18:26 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id MAA27867 for ; Thu, 6 Apr 2000 12:18:25 -0500 (CDT) Sender: bounce-tacgps-6754@lists.tapr.org Message-ID: Date: Thu, 06 Apr 2000 12:16:37 -0500 From: Gerry Creager N5JXS Reply-To: "TAPR Special Interest Group" Organization: DaHouse X-Accept-Language: en MIME-Version: 1.0 To: "TAPR Special Interest Group" Subject: [tacgps] Motorola code up on page4.tamu.edu Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio X-Message-Id: <38ECC675.B657F386@cs.tamu.edu> Precedence: bulk It's posted: I don't have a link yet on the homepage of page4.tamu.edu, so note the URL. Anonymous ftp: page4.tamu.edu, /pub/DGPS httpd://page4.tamu.edu/pub/DGPS *** From the readme that I've got there but isn't coming up when I hit the page: The three directories have different data in them. OnCore has the Motorola RTCM code for dos and linux. dgpsip has the source for Wolfgang Ruppart's dgpsip client, and the daemon, dgpsipd. VBasic has some old code I did originally for Windoze in VB 3 or there abouts for a base station based on the OnCore, and then didn't have time to complete... and stopped using windoze... In the OnCore directory, MOTRTCM has the dos and linux stuff as well as some test files and docs. NGS-post has Dennis Milbert's L1 post-processing code and the NGS-Bluebook data. These are needed because it reads a file with assumed/known positions to seed the fixed site and rover. This program is currently designed for static use, and not for rovers. The input is 2 rinex files. Gerry n5jxs -- Gerry Creager Spatial Sciences Laboratory 979.845.7201 Office Texas Agricultural Experiment Station 979.845.2273 Fax Texas A&M University System 979.228.7686 Pager (preferred) College Station, Texas 77843-2120 gerry@page4.tamu.edu Pager: 9792287686@page.metrocall.com "Opinions expressed are mine and do not necessarily represent those of Texas A&M University." --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Thu Apr 6 12:34:31 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id MAA28308 for ; Thu, 6 Apr 2000 12:34:30 -0500 (CDT) Message-Id: X-Sender: plkilroy@pop700.gsfc.nasa.gov Date: Thu, 06 Apr 2000 13:32:25 -0400 To: "TAPR Special Interest Group" From: Pat Kilroy Subject: [tacgps] Rockwell Jupiter GPS $69. Good Deal? Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" X-Message-Id: <3.0.5.32.20000406133225.0084c100@pop700.gsfc.nasa.gov> Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk >From: n5bfc@ARRL.NET >To: simsat@listserv.gsfc.nasa.gov >Date: Thu, 6 Apr 2000 10:32:03 -0500 >Subject: Rockwell Jupiter GPS $69. Good Deal? >On page 137 of the Aprill 2000 QST is an ad for a $69 Rockwell >Jupiter GPS (Rockwell p/n TU30-D140-211/221/223). The .PDF file >for the unit can be found at >http://www.unitronic.de/rockwell/pdf/gps/221_231.pdf > >A rough read of the specs indicate that the typical error is about >25m, powered by 5 volts, and consumption is 195mA (975mW). > >Is this a good deal on a GPS for a [balloon]? > ==================================================================== Patrick L. Kilroy WK Integration & Test Lead Engineer Phone: 301-286-1984 NASA Goddard Space Flight Center Fax: 301-286-1673 Building 5, Mail Code 568 E-mail: pat.kilroy@gsfc.nasa.gov Greenbelt, Maryland 20771 Web: http://sspp.gsfc.nasa.gov ==================================================================== Visit SimSat at http://garc.gsfc.nasa.gov/~simsat --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Fri Apr 7 21:44:46 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id VAA16570 for ; Fri, 7 Apr 2000 21:44:46 -0500 (CDT) X-Sent: 8 Apr 2000 02:41:41 GMT Message-ID: Date: Fri, 07 Apr 2000 19:41:36 -0700 From: Dan Hinz X-Accept-Language: en MIME-Version: 1.0 To: "TAPR Special Interest Group" Subject: [tacgps] Re: Using TAC-2 on network References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" X-Message-Id: <38EE9C5F.B7F31099@ieee.org> Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk I use timelord on W95 and W98, I haven't tried W2000, so I don't know if it works probably does... Set up one PC connected to the GPS running TAC s/w as the Server, and then the other computers can ask it for time checks at whatever interval is desired. http://www.ossystems.co.uk/ Good luck, Dan, W6LSN --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Sat Apr 8 02:00:24 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id CAA01306 for ; Sat, 8 Apr 2000 02:00:22 -0500 (CDT) Message-ID: From: "bert weis" To: "TAPR Special Interest Group" Subject: [tacgps] Re: Using TAC-2 on network Date: Sat, 8 Apr 2000 06:57:47 -0000 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V4.72.3155.0 List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" X-Message-Id: <000f01bfa127$dd4a6520$96e04ec2@sky83847.skynet.be> Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk Do you know Tardis ? This is a time server that can obtain the correct time from several sources, including GPStiming. It runs on WIN95/WIN98/NT/WIN2000 computers without any trouble and sends ntp packets at a definable rate. The "client" computers run K95, a very small program which picks uo these packets and synchronises the clocks. I have it running with a TAC-32 board for almost a year now without any problem at all. Tardis/K95 is shareware and can be found at http://www.kaska.demon.co.uk -----Oorspronkelijk bericht----- Van: Chris Dapples Aan: TAPR Special Interest Group Datum: donderdag 6 april 2000 17:23 Onderwerp: [tacgps] Using TAC-2 on network >Hi All, > Some time ago there was a posting on how to setup the TAC-2 to set the time >on all computers on a Linux network. I am wondering if someone knows how to >do this >for a Windows2000 network? > Chris/KF7KN > ccdapple@wtp.net > > >--- >You are currently subscribed to tacgps as: on1awb@skynet.be >To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org > > --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Sat Apr 8 06:48:58 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id GAA16134 for ; Sat, 8 Apr 2000 06:48:58 -0500 (CDT) Message-Id: X-Sender: kohjin@133.168.59.1 Reply-To: "TAPR Special Interest Group" Date: Sat, 08 Apr 2000 19:50:26 +0900 To: "TAPR Special Interest Group" From: Kohjin Yamada Subject: [tacgps] Motorola M12 GPS receiver Cc: mac@ten.fujitsu.co.jp, akira@osk.3web.ne.jp Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio X-Message-Id: <4.2.0.58.J.20000408193514.00ade8a8@133.168.59.1> Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk I have found an M12 Starter Kit Promotional Offer $96.00 from Synergy. http://www.synergy-gps.com The offer closes at the end of this month, I'm thinking to buy one for my second receiver. Does anyone use this with TAC32 or any comment? Kohjin - JR1EDE --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Sat Apr 8 10:03:33 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id KAA21233 for ; Sat, 8 Apr 2000 10:03:33 -0500 (CDT) Message-ID: Date: Sat, 08 Apr 2000 16:02:43 +0100 From: "Dr Thomas A Clark (W3IWI)" X-Accept-Language: en MIME-Version: 1.0 To: "TAPR Special Interest Group" Subject: [tacgps] Re: Using TAC-2 on network References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" X-Message-Id: <38EF4A13.57288D73@clark.net> Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk The "professional" TAC32Plus version of Rick's software (http://www.cnssys.com) includes an xntp server function. If you want to see it work, try hitting my GPS R&D site: tac.ggao.nasa.gov = [192.225.79.116] You will see it reports as being a Stratum 1 GPS-based time server. FYI -- it is running on the Windoze 2000 machine I use to monitor the performance of the site's Hydrogen Maser. Tom --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Sat Apr 8 22:35:08 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id WAA13492 for ; Sat, 8 Apr 2000 22:35:08 -0500 (CDT) From: "Chris Dapples" To: "TAPR Special Interest Group" Subject: [tacgps] Re: Using TAC-2 on network Date: Sat, 8 Apr 2000 21:30:09 -0600 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2919.6700 List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" X-Message-Id: Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk Picked up a copy today, but there is a problem now I can't figure out. I have the time set in windows 2000 to GMT and all was OK until I started running Tardis 2000. I am using the time beacon from the GPS but now the time on the computers is one hour ahead. I.e., the gps says 19:43 but the computers running K9 and Tardis say 20:43 and manually changing the time in the control panel only holds until the next update beacon from Tardis. Any ideas what I have misconfigured? -----Original Message----- From: bounce-tacgps-8607@lists.tapr.org [mailto:bounce-tacgps-8607@lists.tapr.org]On Behalf Of bert weis Sent: Saturday, April 08, 2000 00:58 To: TAPR Special Interest Group Subject: [tacgps] Re: Using TAC-2 on network Do you know Tardis ? This is a time server that can obtain the correct time from several sources, including GPStiming. It runs on WIN95/WIN98/NT/WIN2000 computers without any trouble and sends ntp packets at a definable rate. The "client" computers run K95, a very small program which picks uo these packets and synchronises the clocks. I have it running with a TAC-32 board for almost a year now without any problem at all. Tardis/K95 is shareware and can be found at http://www.kaska.demon.co.uk -----Oorspronkelijk bericht----- Van: Chris Dapples Aan: TAPR Special Interest Group Datum: donderdag 6 april 2000 17:23 Onderwerp: [tacgps] Using TAC-2 on network >Hi All, > Some time ago there was a posting on how to setup the TAC-2 to set the time >on all computers on a Linux network. I am wondering if someone knows how to >do this >for a Windows2000 network? > Chris/KF7KN > ccdapple@wtp.net > > >--- >You are currently subscribed to tacgps as: on1awb@skynet.be >To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org > > --- You are currently subscribed to tacgps as: ccdapple@wtp.net To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Sat Apr 8 23:17:59 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id XAA14965 for ; Sat, 8 Apr 2000 23:17:58 -0500 (CDT) Message-ID: From: "Gregory Beat" To: "TAPR Special Interest Group" References: Subject: [tacgps] Re: Using TAC-2 on network Date: Sat, 8 Apr 2000 23:15:06 -0500 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2919.6600 List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" X-Message-Id: <003601bfa1da$3019c180$61938318@ce.mediaone.net> Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk Chris - In your Windows 2000 setup for setting the local time -- set it to Casablanca [GMT/UTC] ... which does not observe the Daylight Savings Time seasonal changes. Saves you from the DST confusion as well as the different spring weekend that Europe and Americas started observing past 2 weeks. Cheers. Greg w9gb ----- Original Message ----- From: "Chris Dapples" To: "TAPR Special Interest Group" Sent: Saturday, April 08, 2000 10:30 PM Subject: [tacgps] Re: Using TAC-2 on network > Picked up a copy today, but there is a problem now I can't figure out. > I have the time set in windows 2000 to GMT and all was OK until I > started > running Tardis 2000. I am using the time beacon from the GPS but now > the time on the computers is one hour ahead. I.e., the gps says 19:43 > but > the computers running K9 and Tardis say 20:43 and manually changing > the > time in the control panel only holds until the next update beacon from > Tardis. > Any ideas what I have misconfigured? > > -----Original Message----- > From: bounce-tacgps-8607@lists.tapr.org > [mailto:bounce-tacgps-8607@lists.tapr.org]On Behalf Of bert weis > Sent: Saturday, April 08, 2000 00:58 > To: TAPR Special Interest Group > Subject: [tacgps] Re: Using TAC-2 on network > > > Do you know Tardis ? This is a time server that can obtain the correct > time > from several sources, including GPStiming. It runs on > WIN95/WIN98/NT/WIN2000 > computers without any trouble and sends ntp packets at a definable > rate. The > "client" computers run K95, a very small program which picks uo these > packets and synchronises the clocks. I have it running with a TAC-32 > board > for almost a year now without any problem at all. > > Tardis/K95 is shareware and can be found at > http://www.kaska.demon.co.uk > > > -----Oorspronkelijk bericht----- > Van: Chris Dapples > Aan: TAPR Special Interest Group > Datum: donderdag 6 april 2000 17:23 > Onderwerp: [tacgps] Using TAC-2 on network > > > >Hi All, > > Some time ago there was a posting on how to setup the TAC-2 to set > the > time > >on all computers on a Linux network. I am wondering if someone knows > how > to > >do this > >for a Windows2000 network? > > Chris/KF7KN > > ccdapple@wtp.net > > > > > >--- > >You are currently subscribed to tacgps as: on1awb@skynet.be > >To unsubscribe send a blank email to > leave-tacgps-6754G@lists.tapr.org > > > > > > > --- > You are currently subscribed to tacgps as: ccdapple@wtp.net > To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org > > > > --- > You are currently subscribed to tacgps as: GREGORY.BEAT@MEDIAONE.NET > To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org > --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Sun Apr 9 11:53:24 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id LAA20982 for ; Sun, 9 Apr 2000 11:53:24 -0500 (CDT) From: "Chris Dapples" To: "TAPR Special Interest Group" Subject: [tacgps] Re: Using TAC-2 on network Date: Sun, 9 Apr 2000 10:52:01 -0600 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2919.6700 List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" X-Message-Id: Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk Thanks Greg, It never occurred to me that England, etc. used Daylight savings. I thought this was strictly an American folly. 73, Chris -----Original Message----- From: bounce-tacgps-8607@lists.tapr.org [mailto:bounce-tacgps-8607@lists.tapr.org]On Behalf Of Gregory Beat Sent: Saturday, April 08, 2000 22:15 To: TAPR Special Interest Group Subject: [tacgps] Re: Using TAC-2 on network Chris - In your Windows 2000 setup for setting the local time -- set it to Casablanca [GMT/UTC] ... which does not observe the Daylight Savings Time seasonal changes. Saves you from the DST confusion as well as the different spring weekend that Europe and Americas started observing past 2 weeks. Cheers. Greg w9gb --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Sun Apr 9 15:34:29 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id PAA28305 for ; Sun, 9 Apr 2000 15:34:27 -0500 (CDT) Message-ID: From: "Gregory Beat" To: "TAPR Special Interest Group" References: Subject: [tacgps] Re: Using TAC-2 on network Date: Sun, 9 Apr 2000 15:32:55 -0500 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2919.6600 List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" X-Message-Id: <004c01bfa262$c92fa1e0$61938318@ce.mediaone.net> Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk Daylight Savings is definitely not an American folly ..... the nightmares of explaining these differences to programmers dealing with global software interfaces .... I just wish the rest of the industries would adopt quickly ... but the the financial equity and derivative markets are still dealing with fractions and not decimals. You don't want to know the headache of supporting this approach. BTW, you MAY be able to use the England GMT, but you would have to remember to turn off the check mark for DST observance. I believe this box is shaded out for Casablanca GMT ! Now why didn't Microsoft place UTC as an option? (too busy hiring lawyers to maintain the monopoly ) GB ----- Original Message ----- From: "Chris Dapples" To: "TAPR Special Interest Group" Sent: Sunday, April 09, 2000 11:52 AM Subject: [tacgps] Re: Using TAC-2 on network > Thanks Greg, It never occurred to me that England, etc. used Daylight > savings. I thought > this was strictly an American folly. > 73, Chris > > -----Original Message----- > From: bounce-tacgps-8607@lists.tapr.org > [mailto:bounce-tacgps-8607@lists.tapr.org]On Behalf Of Gregory Beat > Sent: Saturday, April 08, 2000 22:15 > To: TAPR Special Interest Group > Subject: [tacgps] Re: Using TAC-2 on network > > > Chris - > > In your Windows 2000 setup for setting the local time -- set it to > Casablanca [GMT/UTC] ... which does not observe the Daylight Savings > Time > seasonal changes. Saves you from the DST confusion as well as the > different > spring weekend that Europe and Americas started observing past 2 > weeks. > > Cheers. > > Greg > w9gb > > > --- > You are currently subscribed to tacgps as: GREGORY.BEAT@MEDIAONE.NET > To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org > --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Sun Apr 9 17:13:17 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id RAA02083 for ; Sun, 9 Apr 2000 17:13:15 -0500 (CDT) From: Malcolm Miles To: "TAPR Special Interest Group" Subject: [tacgps] Re: Using TAC-2 on network Date: Mon, 10 Apr 2000 08:10:18 +1000 Message-ID: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-MDaemon-Deliver-To: tacgps@lists.tapr.org X-Return-Path: mgm-ns@tardis.net X-MDRcpt-To: tacgps@lists.tapr.org X-MDRemoteIP: 203.43.136.132 List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" X-Message-Id: <1sv1fskbmfvtm0o6gfsdfsq0nvmm41n14l@4ax.com> Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by tapr.org id RAA02083 On Sun, 9 Apr 2000 15:32:55 -0500, you wrote: >BTW, you MAY be able to use the England GMT, but you would have to remember >to turn off the check mark for DST observance. I believe this box is shaded >out for Casablanca GMT ! Now why didn't Microsoft place UTC as an option? No need to wait for Microsoft, you can add your own time zones pretty easily with a few registry tweaks. I'll post the details if anyone is interested. -- Best wishes, Malcolm --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Sun Apr 9 17:46:27 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id RAA03182 for ; Sun, 9 Apr 2000 17:46:24 -0500 (CDT) From: "Chris Dapples" To: "TAPR Special Interest Group" Subject: [tacgps] Re: Using TAC-2 on network Date: Sun, 9 Apr 2000 16:44:53 -0600 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2919.6700 In-Reply-To: Importance: Normal List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" X-Message-Id: Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk Malcolm, I for one would be very interested in the details. --Chris-- -----Original Message----- From: bounce-tacgps-8607@lists.tapr.org [mailto:bounce-tacgps-8607@lists.tapr.org]On Behalf Of Malcolm Miles Sent: Sunday, April 09, 2000 16:10 To: TAPR Special Interest Group Subject: [tacgps] Re: Using TAC-2 on network On Sun, 9 Apr 2000 15:32:55 -0500, you wrote: >BTW, you MAY be able to use the England GMT, but you would have to remember >to turn off the check mark for DST observance. I believe this box is shaded >out for Casablanca GMT ! Now why didn't Microsoft place UTC as an option? No need to wait for Microsoft, you can add your own time zones pretty easily with a few registry tweaks. I'll post the details if anyone is interested. -- Best wishes, Malcolm --- You are currently subscribed to tacgps as: ccdapple@wtp.net To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Mon Apr 10 09:22:20 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id JAA14748 for ; Mon, 10 Apr 2000 09:22:20 -0500 (CDT) Message-Id: From: "Bender, Mark E" To: "TAPR Special Interest Group" Subject: [tacgps] RE: Motorola M12 GPS receiver Date: Mon, 10 Apr 2000 07:21:25 -0700 MIME-Version: 1.0 Content-Type: text/plain List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" X-Message-Id: <31754A9A8040D311849F00805FA715E211A983@xch-lbc-09.lgb.cal.boeing.com> Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk I am assuming that this kit requires an Oncore GPS engine... or is it an actual 12 channel GPS system all for the 192.00 price tag? Mark Bender - kd6not > ---------- > From: Kohjin Yamada[SMTP:kohjin@marina.prug.or.jp] > Reply To: TAPR Special Interest Group > Sent: Saturday, April 08, 2000 3:50 AM > To: TAPR Special Interest Group > Cc: mac@ten.fujitsu.co.jp; akira@osk.3web.ne.jp > Subject: [tacgps] Motorola M12 GPS receiver > > I have found an M12 Starter Kit Promotional Offer $96.00 from Synergy. > > http://www.synergy-gps.com > > The offer closes at the end of this month, I'm thinking to buy one > for my second receiver. > > Does anyone use this with TAC32 or any comment? > > Kohjin - JR1EDE > > > > --- > You are currently subscribed to tacgps as: mark.e.bender@boeing.com > To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org > --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Mon Apr 10 09:32:58 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id JAA15218 for ; Mon, 10 Apr 2000 09:32:58 -0500 (CDT) Message-ID: From: "Kirby, Brian" To: "TAPR Special Interest Group" Subject: [tacgps] RE: Motorola M12 GPS receiver Date: Mon, 10 Apr 2000 09:29:47 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01BFA2F9.3C9B68BC" List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" X-Message-Id: Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. ------_=_NextPart_001_01BFA2F9.3C9B68BC Content-Type: text/plain >From Synergy's home page ( http://www.synergy-gps.com/index.html ): For first time customers interested in buying an M12 for evaluation, we are providing a special offer on the M12 Starter Kit, P/N 10001470. This Starter Kit normally priced at $192.00 is now available for only $96.00! The Starter Kit consists of an M12 Development Board & M12 GPS Receiver (shown in photo at left); 9VDC wall mount (115VAC, 60Hz) Power Supply; Active GPS Antenna; and Serial Cable. For additional information about the M12 Starter Kit as well as additional software and documentation options, please refer to the Synergy Systems Evaluation Kit Addendum. This offer is limited to Visa and MasterCard Purchases only, and it is limited to one kit per customer. This offer ends May 1, 2000, and is limited to the first 100 first time customers. > ---------- > From: Bender, Mark E[SMTP:Mark.Bender@West.Boeing.com] > Reply To: TAPR Special Interest Group > Sent: Monday, April 10, 2000 9:21 AM > To: TAPR Special Interest Group > Subject: [tacgps] RE: Motorola M12 GPS receiver > > I am assuming that this kit requires an Oncore GPS engine... or is it > an actual 12 channel GPS system all for the 192.00 price tag? > > Mark Bender - kd6not > > > > ---------- > > From: Kohjin Yamada[SMTP:kohjin@marina.prug.or.jp] > > Reply To: TAPR Special Interest Group > > Sent: Saturday, April 08, 2000 3:50 AM > > To: TAPR Special Interest Group > > Cc: mac@ten.fujitsu.co.jp; akira@osk.3web.ne.jp > > Subject: [tacgps] Motorola M12 GPS receiver > > > > I have found an M12 Starter Kit Promotional Offer $96.00 from Synergy. > > > > http://www.synergy-gps.com > > > > The offer closes at the end of this month, I'm thinking to buy one > > for my second receiver. > > > > Does anyone use this with TAC32 or any comment? > > > > Kohjin - JR1EDE > > > > > > > > --- > > You are currently subscribed to tacgps as: mark.e.bender@boeing.com > > To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org > > > > --- > You are currently subscribed to tacgps as: brian.kirby@msfc.nasa.gov > To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org > ------_=_NextPart_001_01BFA2F9.3C9B68BC Content-Type: text/html Content-Transfer-Encoding: quoted-printable RE: [tacgps] RE: Motorola M12 GPS receiver

From Synergy's home = page ( http://www.synergy-gps.com/index.html = ):   For first time = customers interested in buying an M12 for evaluation, we are providing = a special offer on the M12 Starter Kit, P/N 10001470. This Starter Kit = normally priced at $192.00 is now available for only $96.00! The = Starter Kit consists of an M12 Development Board & M12 GPS Receiver = (shown in photo at left); 9VDC wall mount (115VAC, 60Hz) Power Supply; = Active GPS Antenna; and Serial Cable. For additional information about = the M12 Starter Kit as well as additional software and documentation = options, please refer to the Synergy Systems Evaluation Kit = Addendum. This offer is = limited to Visa and MasterCard Purchases only, and it is limited to one kit per customer. This = offer ends May 1, 2000, and is limited to the first 100 first time = customers.


    ----------
    From:   = Bender, Mark = E[SMTP:Mark.Bender@West.Boeing.com]
    Reply To: =       TAPR Special Interest Group
    Sent:   = Monday, April 10, 2000 9:21 = AM
    To: =     TAPR Special = Interest Group
    Subject: =        [tacgps] RE: Motorola M12 GPS receiver

    I am assuming that this kit requires = an Oncore GPS engine... or is it
    an actual 12 channel GPS system all = for the 192.00 price tag?

    Mark Bender - kd6not


    > ----------
    > From: =         Kohjin = Yamada[SMTP:kohjin@marina.prug.or.jp]
    > Reply To:     = TAPR Special Interest Group
    > Sent: =         Saturday, April 08, 2000 = 3:50 AM
    > To:   TAPR Special Interest = Group
    > Cc:   = mac@ten.fujitsu.co.jp; akira@osk.3web.ne.jp
    > Subject: =      [tacgps] Motorola M12 GPS receiver
    >
    > I have found an M12 Starter Kit = Promotional Offer $96.00 from Synergy.
    >
    > http://www.synergy-gps.com
    >
    > The offer closes at the end of = this month, I'm thinking to buy one
    > for my second receiver.
    >
    > Does anyone use this with TAC32 = or any comment?
    >
    > Kohjin - JR1EDE
    >
    >
    >
    > ---
    > You are currently subscribed to = tacgps as: mark.e.bender@boeing.com
    > To unsubscribe send a blank = email to leave-tacgps-6754G@lists.tapr.org
    >

    ---
    You are currently subscribed to = tacgps as: brian.kirby@msfc.nasa.gov
    To unsubscribe send a blank email to = leave-tacgps-6754G@lists.tapr.org

------_=_NextPart_001_01BFA2F9.3C9B68BC-- --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Mon Apr 10 09:50:47 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id JAA15840 for ; Mon, 10 Apr 2000 09:50:45 -0500 (CDT) Message-ID: From: Mastenbrook Gary-G13216 To: "TAPR Special Interest Group" Subject: [tacgps] RE: Motorola M12 GPS receiver Date: Mon, 10 Apr 2000 09:48:04 -0500 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" X-Message-Id: <7195C03599D9D311BE580008C75697EB0A61F8@il33exm01.wes.mot.com> Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk Mark- It includes a receiver and more. I consider it to be a great deal! Antenna, receiver, interface board, power supply. Lots of fun for $96! (Not surprised that they limit the quantity to only 100 units at that price...) 73's Gary N8DMT Gary Mastenbrook, Product Visioneering, Motorola, Inc. 50 E. Commerce Drive, Schaumburg, IL 60173 Email: g13216@email.mot.com Work Home Page: http://www.mot.com/telematics Personal Home Page: http://www.qsl.net/n8dmt -----Original Message----- From: Bender, Mark E [mailto:Mark.Bender@West.Boeing.com] Sent: Monday, April 10, 2000 9:21 AM To: TAPR Special Interest Group Subject: [tacgps] RE: Motorola M12 GPS receiver I am assuming that this kit requires an Oncore GPS engine... or is it an actual 12 channel GPS system all for the 192.00 price tag? Mark Bender - kd6not > ---------- > From: Kohjin Yamada[SMTP:kohjin@marina.prug.or.jp] > Reply To: TAPR Special Interest Group > Sent: Saturday, April 08, 2000 3:50 AM > To: TAPR Special Interest Group > Cc: mac@ten.fujitsu.co.jp; akira@osk.3web.ne.jp > Subject: [tacgps] Motorola M12 GPS receiver > > I have found an M12 Starter Kit Promotional Offer $96.00 from Synergy. > > http://www.synergy-gps.com > > The offer closes at the end of this month, I'm thinking to buy one > for my second receiver. > > Does anyone use this with TAC32 or any comment? > > Kohjin - JR1EDE > > > > --- > You are currently subscribed to tacgps as: mark.e.bender@boeing.com > To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org > --- You are currently subscribed to tacgps as: G13216@EMAIL1.WES.MOT.COM To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Mon Apr 10 10:13:53 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id KAA16797 for ; Mon, 10 Apr 2000 10:13:52 -0500 (CDT) Message-Id: X-Sender: rvaughan@pop.gate.net Date: Mon, 10 Apr 2000 11:09:26 -0400 To: "TAPR Special Interest Group" From: Ray Vaughan Subject: [tacgps] RE: Motorola M12 GPS receiver In-Reply-To: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" X-Message-Id: <4.2.0.58.20000410105932.00d3aa40@pop.gate.net> Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk Is this kit compatible with the DGPS signal generation board that TAPR offers? (http://www.tapr.org/tapr/html/Fdgps.html) It does sound good to me too. Maybe not a pretty unit, but with a case, it could make a nice tracker if nothing else. At 09:48 AM 4/10/00 -0500, you wrote: >Mark- It includes a receiver and more. I consider it to be a great deal! >Antenna, receiver, interface board, power supply. Lots of fun for $96! >(Not surprised that they limit the quantity to only 100 units at that >price...) > >73's > >Gary N8DMT > >Gary Mastenbrook, Product Visioneering, Motorola, Inc. >50 E. Commerce Drive, Schaumburg, IL 60173 >Email: g13216@email.mot.com >Work Home Page: http://www.mot.com/telematics >Personal Home Page: http://www.qsl.net/n8dmt > > >-----Original Message----- >From: Bender, Mark E [mailto:Mark.Bender@West.Boeing.com] >Sent: Monday, April 10, 2000 9:21 AM >To: TAPR Special Interest Group >Subject: [tacgps] RE: Motorola M12 GPS receiver > > >I am assuming that this kit requires an Oncore GPS engine... or is it >an actual 12 channel GPS system all for the 192.00 price tag? > >Mark Bender - kd6not > > > > ---------- > > From: Kohjin Yamada[SMTP:kohjin@marina.prug.or.jp] > > Reply To: TAPR Special Interest Group > > Sent: Saturday, April 08, 2000 3:50 AM > > To: TAPR Special Interest Group > > Cc: mac@ten.fujitsu.co.jp; akira@osk.3web.ne.jp > > Subject: [tacgps] Motorola M12 GPS receiver > > > > I have found an M12 Starter Kit Promotional Offer $96.00 from Synergy. > > > > http://www.synergy-gps.com > > > > The offer closes at the end of this month, I'm thinking to buy one > > for my second receiver. > > > > Does anyone use this with TAC32 or any comment? > > > > Kohjin - JR1EDE > > > > > > > > --- > > You are currently subscribed to tacgps as: mark.e.bender@boeing.com > > To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org > > > >--- >You are currently subscribed to tacgps as: G13216@EMAIL1.WES.MOT.COM >To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org > >--- >You are currently subscribed to tacgps as: ray@rayvaughan.com >To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org Ray J. Vaughan, MS, CBTE KD4BBM ray@rayvaughan.com ray@2-way.com http://www.rayvaughan.com/ --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Mon Apr 10 10:19:00 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id KAA17037 for ; Mon, 10 Apr 2000 10:19:00 -0500 (CDT) Message-ID: From: "Kirby, Brian" To: "TAPR Special Interest Group" Subject: [tacgps] RE: Motorola M12 GPS receiver Date: Mon, 10 Apr 2000 10:16:15 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01BFA2FF.B82179A8" List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" X-Message-Id: Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. ------_=_NextPart_001_01BFA2FF.B82179A8 Content-Type: text/plain The M12 cannot generate DGPS yet, according to Synergy. Motorola plans to add it in the next year. > ---------- > From: Ray Vaughan[SMTP:ray@rayvaughan.com] > Reply To: TAPR Special Interest Group > Sent: Monday, April 10, 2000 10:09 AM > To: TAPR Special Interest Group > Subject: [tacgps] RE: Motorola M12 GPS receiver > > Is this kit compatible with the DGPS signal generation board that TAPR > offers? (http://www.tapr.org/tapr/html/Fdgps.html) > > It does sound good to me too. Maybe not a pretty unit, but with a case, > it could make a nice tracker if nothing else. > > At 09:48 AM 4/10/00 -0500, you wrote: > >Mark- It includes a receiver and more. I consider it to be a great > deal! > >Antenna, receiver, interface board, power supply. Lots of fun for $96! > >(Not surprised that they limit the quantity to only 100 units at that > >price...) > > > >73's > > > >Gary N8DMT > > > >Gary Mastenbrook, Product Visioneering, Motorola, Inc. > >50 E. Commerce Drive, Schaumburg, IL 60173 > >Email: g13216@email.mot.com > >Work Home Page: http://www.mot.com/telematics > >Personal Home Page: http://www.qsl.net/n8dmt > > > > > >-----Original Message----- > >From: Bender, Mark E [mailto:Mark.Bender@West.Boeing.com] > >Sent: Monday, April 10, 2000 9:21 AM > >To: TAPR Special Interest Group > >Subject: [tacgps] RE: Motorola M12 GPS receiver > > > > > >I am assuming that this kit requires an Oncore GPS engine... or is it > >an actual 12 channel GPS system all for the 192.00 price tag? > > > >Mark Bender - kd6not > > > > > > > ---------- > > > From: Kohjin Yamada[SMTP:kohjin@marina.prug.or.jp] > > > Reply To: TAPR Special Interest Group > > > Sent: Saturday, April 08, 2000 3:50 AM > > > To: TAPR Special Interest Group > > > Cc: mac@ten.fujitsu.co.jp; akira@osk.3web.ne.jp > > > Subject: [tacgps] Motorola M12 GPS receiver > > > > > > I have found an M12 Starter Kit Promotional Offer $96.00 from Synergy. > > > > > > http://www.synergy-gps.com > > > > > > The offer closes at the end of this month, I'm thinking to buy one > > > for my second receiver. > > > > > > Does anyone use this with TAC32 or any comment? > > > > > > Kohjin - JR1EDE > > > > > > > > > > > > --- > > > You are currently subscribed to tacgps as: mark.e.bender@boeing.com > > > To unsubscribe send a blank email to > leave-tacgps-6754G@lists.tapr.org > > > > > > >--- > >You are currently subscribed to tacgps as: G13216@EMAIL1.WES.MOT.COM > >To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org > > > >--- > >You are currently subscribed to tacgps as: ray@rayvaughan.com > >To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org > > > Ray J. Vaughan, MS, CBTE > KD4BBM > ray@rayvaughan.com > ray@2-way.com > http://www.rayvaughan.com/ > > --- > You are currently subscribed to tacgps as: brian.kirby@msfc.nasa.gov > To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org > ------_=_NextPart_001_01BFA2FF.B82179A8 Content-Type: text/html Content-Transfer-Encoding: quoted-printable RE: [tacgps] RE: Motorola M12 GPS receiver

The M12 cannot = generate DGPS yet, according to Synergy.   Motorola plans to = add it in the next year. 

    ----------
    From:   = Ray = Vaughan[SMTP:ray@rayvaughan.com]
    Reply To: =       TAPR Special Interest Group
    Sent:   = Monday, April 10, 2000 10:09 = AM
    To: =     TAPR Special = Interest Group
    Subject: =        [tacgps] RE: Motorola M12 GPS receiver

    Is this kit compatible with the DGPS = signal generation board that TAPR offers?  (http://www.tapr.org/tapr/html/Fdgps.html)

    It does sound good to me = too.   Maybe not a pretty unit, but with a case, it could = make a nice tracker if nothing else. 

    At 09:48 AM 4/10/00 -0500, you = wrote:
    >Mark-  It includes a = receiver and more.  I consider it to be a great deal!
    >Antenna, receiver, interface = board, power supply.  Lots of fun for $96!
    >(Not surprised that they limit = the quantity to only 100 units at that
    >price...)
    >
    >73's
    >
    >Gary N8DMT
    >
    >Gary Mastenbrook, Product = Visioneering, Motorola, Inc.
    >50 E. Commerce Drive, Schaumburg, = IL 60173
    >Email: = g13216@email.mot.com
    >Work Home Page:  = http://www.mot.com/telematics
    >Personal Home Page: = http://www.qsl.net/n8dmt
    >
    >
    >-----Original Message-----
    >From: Bender, Mark E = [mailto:Mark.Bender@West.Boei= ng.com]
    >Sent: Monday, April 10, 2000 9:21 = AM
    >To: TAPR Special Interest = Group
    >Subject: [tacgps] RE: Motorola = M12 GPS receiver
    >
    >
    >I am assuming that this kit = requires an Oncore GPS engine... or is it
    >an actual 12 channel GPS system = all for the 192.00 price tag?
    >
    >Mark Bender - kd6not
    >
    >
    > > ----------
    > > = From:         Kohjin = Yamada[SMTP:kohjin@marina.prug.or.jp]
    > > Reply = To:     TAPR Special Interest Group
    > > = Sent:         Saturday, April = 08, 2000 3:50 AM
    > > To:   TAPR = Special Interest Group
    > > Cc:   = mac@ten.fujitsu.co.jp; akira@osk.3web.ne.jp
    > > = Subject:      [tacgps] Motorola M12 GPS = receiver
    > >
    > > I have found an M12 Starter = Kit Promotional Offer $96.00 from Synergy.
    > >
    > > http://www.synergy-gps.com
    > >
    > > The offer closes at the end = of this month, I'm thinking to buy one
    > > for my second = receiver.
    > >
    > > Does anyone use this with = TAC32 or any comment?
    > >
    > > Kohjin - JR1EDE
    > >
    > >
    > >
    > > ---
    > > You are currently = subscribed to tacgps as: mark.e.bender@boeing.com
    > > To unsubscribe send a blank = email to leave-tacgps-6754G@lists.tapr.org
    > >
    >
    >---
    >You are currently subscribed to = tacgps as: G13216@EMAIL1.WES.MOT.COM
    >To unsubscribe send a blank email = to leave-tacgps-6754G@lists.tapr.org
    >
    >---
    >You are currently subscribed to = tacgps as: ray@rayvaughan.com
    >To unsubscribe send a blank email = to leave-tacgps-6754G@lists.tapr.org


    Ray J. Vaughan, MS, CBTE
    KD4BBM
    ray@rayvaughan.com
    ray@2-way.com
    http://www.rayvaughan.com/

    ---
    You are currently subscribed to = tacgps as: brian.kirby@msfc.nasa.gov
    To unsubscribe send a blank email to = leave-tacgps-6754G@lists.tapr.org

------_=_NextPart_001_01BFA2FF.B82179A8-- --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Mon Apr 10 10:24:37 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id KAA17205 for ; Mon, 10 Apr 2000 10:24:37 -0500 (CDT) From: "Steven R. Bible" To: "TAPR Special Interest Group" Subject: [tacgps] RE: Motorola M12 GPS receiver Date: Mon, 10 Apr 2000 11:23:20 -0400 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2919.6700 Importance: Normal List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" X-Message-Id: Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk I have not had the opportunity to evaluate the latest M12 firmware revision that has the DGPS corrections. As soon as I can, I'll let everyone on the list know. - Steve, N7HPR > -----Original Message----- > From: bounce-tacgps-5687@lists.tapr.org > [mailto:bounce-tacgps-5687@lists.tapr.org]On Behalf Of Ray Vaughan > Sent: Monday, April 10, 2000 11:09 AM > To: TAPR Special Interest Group > Subject: [tacgps] RE: Motorola M12 GPS receiver > > > Is this kit compatible with the DGPS signal generation board that > TAPR offers? (http://www.tapr.org/tapr/html/Fdgps.html) > > It does sound good to me too. Maybe not a pretty unit, but with > a case, it could make a nice tracker if nothing else. > > At 09:48 AM 4/10/00 -0500, you wrote: > >Mark- It includes a receiver and more. I consider it to be a > great deal! > >Antenna, receiver, interface board, power supply. Lots of fun for $96! > >(Not surprised that they limit the quantity to only 100 units at that > >price...) > > > >73's > > > >Gary N8DMT > > > >Gary Mastenbrook, Product Visioneering, Motorola, Inc. > >50 E. Commerce Drive, Schaumburg, IL 60173 > >Email: g13216@email.mot.com > >Work Home Page: http://www.mot.com/telematics > >Personal Home Page: http://www.qsl.net/n8dmt > > > > > >-----Original Message----- > >From: Bender, Mark E [mailto:Mark.Bender@West.Boeing.com] > >Sent: Monday, April 10, 2000 9:21 AM > >To: TAPR Special Interest Group > >Subject: [tacgps] RE: Motorola M12 GPS receiver > > > > > >I am assuming that this kit requires an Oncore GPS engine... or is it > >an actual 12 channel GPS system all for the 192.00 price tag? > > > >Mark Bender - kd6not > > > > > > > ---------- > > > From: Kohjin Yamada[SMTP:kohjin@marina.prug.or.jp] > > > Reply To: TAPR Special Interest Group > > > Sent: Saturday, April 08, 2000 3:50 AM > > > To: TAPR Special Interest Group > > > Cc: mac@ten.fujitsu.co.jp; akira@osk.3web.ne.jp > > > Subject: [tacgps] Motorola M12 GPS receiver > > > > > > I have found an M12 Starter Kit Promotional Offer $96.00 from Synergy. > > > > > > http://www.synergy-gps.com > > > > > > The offer closes at the end of this month, I'm thinking to buy one > > > for my second receiver. > > > > > > Does anyone use this with TAC32 or any comment? > > > > > > Kohjin - JR1EDE > > > > > > > > > > > > --- > > > You are currently subscribed to tacgps as: mark.e.bender@boeing.com > > > To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org > > > > > > >--- > >You are currently subscribed to tacgps as: G13216@EMAIL1.WES.MOT.COM > >To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org > > > >--- > >You are currently subscribed to tacgps as: ray@rayvaughan.com > >To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org > > > Ray J. Vaughan, MS, CBTE > KD4BBM > ray@rayvaughan.com > ray@2-way.com > http://www.rayvaughan.com/ > > --- > You are currently subscribed to tacgps as: SRBIBLE@GATE.NET > To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org > > --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Mon Apr 10 10:25:25 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id KAA17246 for ; Mon, 10 Apr 2000 10:25:24 -0500 (CDT) Message-Id: X-Sender: rvaughan@pop.gate.net Date: Mon, 10 Apr 2000 11:24:21 -0400 To: "TAPR Special Interest Group" From: Ray Vaughan Subject: [tacgps] RE: Motorola M12 GPS receiver In-Reply-To: Mime-Version: 1.0 Content-Type: multipart/alternative; boundary="=====================_349546641==_.ALT" List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" X-Message-Id: <4.2.0.58.20000410112322.00d4f2b0@pop.gate.net> Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk --=====================_349546641==_.ALT Content-Type: text/plain; charset="us-ascii" As in a firmware upgrade? Or add a module? Or buy a whole new one? At 10:16 AM 4/10/00 -0500, you wrote: >The M12 cannot generate DGPS yet, according to Synergy. Motorola plans to add it in the next year. Ray J. Vaughan, MS, CBTE KD4BBM ray@rayvaughan.com ray@2-way.com http://www.rayvaughan.com/ --=====================_349546641==_.ALT Content-Type: text/html; charset="us-ascii" As in a firmware upgrade?  Or add a module?  Or buy a whole new one?

At 10:16 AM 4/10/00 -0500, you wrote:

The M12 cannot generate DGPS yet, according to Synergy.   Motorola plans to add it in the next year. 



Ray J. Vaughan, MS, CBTE
KD4BBM
ray@rayvaughan.com
ray@2-way.com
http://www.rayvaughan.com/ --=====================_349546641==_.ALT-- --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Mon Apr 10 10:30:32 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id KAA17372 for ; Mon, 10 Apr 2000 10:30:32 -0500 (CDT) Message-ID: From: "Kirby, Brian" To: "TAPR Special Interest Group" Subject: [tacgps] RE: Motorola M12 GPS receiver Date: Mon, 10 Apr 2000 10:27:00 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01BFA301.37231DAA" List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" X-Message-Id: Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. ------_=_NextPart_001_01BFA301.37231DAA Content-Type: text/plain Don't know. > ---------- > From: Ray Vaughan[SMTP:ray@rayvaughan.com] > Reply To: TAPR Special Interest Group > Sent: Monday, April 10, 2000 10:24 AM > To: TAPR Special Interest Group > Subject: [tacgps] RE: Motorola M12 GPS receiver > > As in a firmware upgrade? Or add a module? Or buy a whole new one? > > At 10:16 AM 4/10/00 -0500, you wrote: > > > > The M12 cannot generate DGPS yet, according to Synergy. Motorola > plans to add it in the next year. > > > > > > Ray J. Vaughan, MS, CBTE > KD4BBM > ray@rayvaughan.com > ray@2-way.com > http://www.rayvaughan.com/ > ------_=_NextPart_001_01BFA301.37231DAA Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable RE: [tacgps] RE: Motorola M12 GPS receiver

Don't know.

    ----------
    From:   = Ray = Vaughan[SMTP:ray@rayvaughan.com]
    Reply To: =       TAPR Special Interest Group
    Sent:   = Monday, April 10, 2000 10:24 = AM
    To: =     TAPR Special = Interest Group
    Subject: =        [tacgps] RE: Motorola M12 GPS receiver

    As in a firmware upgrade?=A0 Or add a = module?=A0 Or buy a whole new one?

    At 10:16 AM 4/10/00 -0500, you wrote:



      The M12 cannot = generate DGPS yet, according to Synergy.=A0=A0 Motorola plans to add it = in the next year.=A0





    Ray J. Vaughan, MS, CBTE
    KD4BBM
    ray@rayvaughan.com
    ray@2-way.com
    http://www.rayvaughan.com/

------_=_NextPart_001_01BFA301.37231DAA-- --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Mon Apr 10 10:46:22 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id KAA17935 for ; Mon, 10 Apr 2000 10:46:21 -0500 (CDT) Sender: bounce-tacgps-6754@lists.tapr.org Message-ID: Date: Mon, 10 Apr 2000 10:45:27 -0500 From: Gerry Creager N5JXS Reply-To: "TAPR Special Interest Group" Organization: DaHouse X-Accept-Language: en MIME-Version: 1.0 To: "TAPR Special Interest Group" Subject: [tacgps] RE: Motorola M12 GPS receiver References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio X-Message-Id: <38F1F717.57CCEA0B@cs.tamu.edu> Precedence: bulk "Bender, Mark E" wrote: > > I am assuming that this kit requires an Oncore GPS engine... or is it > an actual 12 channel GPS system all for the 192.00 price tag? The M12 is the follow-on to the OnCore, but unless they've had a change of heart, it doesn't have carrier phase data. Gerry n5jxs -- Gerry Creager Spatial Sciences Laboratory 979.845.7201 Office Texas Agricultural Experiment Station 979.845.2273 Fax Texas A&M University System 979.228.7686 Pager (preferred) College Station, Texas 77843-2120 gerry@page4.tamu.edu Pager: 9792287686@page.metrocall.com "Opinions expressed are mine and do not necessarily represent those of Texas A&M University." --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Mon Apr 10 23:50:16 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id XAA16393 for ; Mon, 10 Apr 2000 23:50:16 -0500 (CDT) Errors-To: Message-Id: X-Sender: jeff@mail.mich.com (Unverified) Date: Tue, 11 Apr 2000 00:50:04 -0400 To: "TAPR Special Interest Group" From: Jeff King Subject: [tacgps] Re: Using TAC-2 on network In-Reply-To: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" X-Message-Id: <4.1.20000411004448.025646c0@mail.mich.com> Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk It was my understanding, as of 4 months ago, that Tardis didn't support a 1PPS signal. The only think I found that did that was the professional version of TAC32, and it wasn't cheap. Now, I have heard that there is a program that comes with WindowsNT that can act as a network time server, I'm not 100% sure it supports the 1PPS signal though. Without this 1PPS signal, your depending on your serial port to set the time. Now, I think Tardis does support the Jupiter binary serial mode, which is more predictable then nema. -Jeff At 06:57 AM 4/8/00 +0000, bert weis wrote: >Do you know Tardis ? This is a time server that can obtain the correct time >from several sources, including GPStiming. It runs on WIN95/WIN98/NT/WIN2000 >computers without any trouble and sends ntp packets at a definable rate. The >"client" computers run K95, a very small program which picks uo these >packets and synchronises the clocks. I have it running with a TAC-32 board >for almost a year now without any problem at all. > >Tardis/K95 is shareware and can be found at http://www.kaska.demon.co.uk > > >-----Oorspronkelijk bericht----- >Van: Chris Dapples >Aan: TAPR Special Interest Group >Datum: donderdag 6 april 2000 17:23 >Onderwerp: [tacgps] Using TAC-2 on network > > >>Hi All, >> Some time ago there was a posting on how to setup the TAC-2 to set the >time >>on all computers on a Linux network. I am wondering if someone knows how >to >>do this >>for a Windows2000 network? >> Chris/KF7KN >> ccdapple@wtp.net >> >> >>--- >>You are currently subscribed to tacgps as: on1awb@skynet.be >>To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org >> >> > > >--- >You are currently subscribed to tacgps as: JEFF@MICH.COM >To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Wed Apr 12 12:16:08 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id MAA22738 for ; Wed, 12 Apr 2000 12:16:07 -0500 (CDT) Message-ID: From: Mastenbrook Gary-G13216 To: "TAPR Special Interest Group" Subject: [tacgps] Re: Using TAC-2 on network Date: Tue, 11 Apr 2000 08:21:38 -0500 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" X-Message-Id: <7195C03599D9D311BE580008C75697EB0A6205@il33exm01.wes.mot.com> Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk So far, this thread has addressed Wintel machines. Could anyone please comment on either Sun/Solaris or Linux applications to address this need? (I'm getting ready to setup time serving on my internal network, but won't have a wintel box available. First choice: my ThinLinux based router/firewall from edge.fireplug.net, second choice: SPARCstation LX internal network server w/ Solaris 7) Thanks! Apologies if someone has already addressed this question back in the archives... 73's Gary N8DMT Gary Mastenbrook, Product Visioneering, Motorola, Inc. 50 E. Commerce Drive, Schaumburg, IL 60173 Email: g13216@email.mot.com Work Home Page: http://www.mot.com/telematics Personal Home Page: http://www.qsl.net/n8dmt -----Original Message----- From: Jeff King [mailto:jeff@aerodata.net] Sent: Monday, April 10, 2000 11:50 PM To: TAPR Special Interest Group Subject: [tacgps] Re: Using TAC-2 on network It was my understanding, as of 4 months ago, that Tardis didn't support a 1PPS signal. The only think I found that did that was the professional version of TAC32, and it wasn't cheap. Now, I have heard that there is a program that comes with WindowsNT that can act as a network time server, I'm not 100% sure it supports the 1PPS signal though. Without this 1PPS signal, your depending on your serial port to set the time. Now, I think Tardis does support the Jupiter binary serial mode, which is more predictable then nema. -Jeff At 06:57 AM 4/8/00 +0000, bert weis wrote: >Do you know Tardis ? This is a time server that can obtain the correct time >from several sources, including GPStiming. It runs on WIN95/WIN98/NT/WIN2000 >computers without any trouble and sends ntp packets at a definable rate. The >"client" computers run K95, a very small program which picks uo these >packets and synchronises the clocks. I have it running with a TAC-32 board >for almost a year now without any problem at all. > >Tardis/K95 is shareware and can be found at http://www.kaska.demon.co.uk > > >-----Oorspronkelijk bericht----- >Van: Chris Dapples >Aan: TAPR Special Interest Group >Datum: donderdag 6 april 2000 17:23 >Onderwerp: [tacgps] Using TAC-2 on network > > >>Hi All, >> Some time ago there was a posting on how to setup the TAC-2 to set the >time >>on all computers on a Linux network. I am wondering if someone knows how >to >>do this >>for a Windows2000 network? >> Chris/KF7KN >> ccdapple@wtp.net >> >> >>--- >>You are currently subscribed to tacgps as: on1awb@skynet.be >>To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org >> >> > > >--- >You are currently subscribed to tacgps as: JEFF@MICH.COM >To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org --- You are currently subscribed to tacgps as: G13216@EMAIL1.WES.MOT.COM To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Wed Apr 12 12:27:47 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id MAA23286 for ; Wed, 12 Apr 2000 12:27:44 -0500 (CDT) Message-Id: To: "TAPR Special Interest Group" cc: jra@meow.febo.com Subject: [tacgps] Re: Using TAC-2 on network In-reply-to: Your message of "Tue, 11 Apr 2000 08:21:38 CDT." Date: Wed, 12 Apr 2000 13:26:48 -0300 From: John Ackermann List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" X-Message-Id: <200004121726.NAA20534@meow.febo.com> Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk The ntp software reference implementation has been ported to a bunch of Un*x platforms, as well as Windows (not certain just what versions). The current release (version 4.0.99) has a reference clock driver for the Oncore built in. The earlier 3-5.91 version does not directly support the Oncore out of the box, but can be made to do so in a couple of ways. I know that lots of folks have used ntp on Solaris machines, and there's quite a bit of activity on both Linux and FreeBSD -- both these have the ability to control the sysetm clock using a 1pps input, and can keep time to within microseconds. Check www.ntp.org for more details. There's a good newsgroup, comp.protocol.time.ntp, which is low volume and has lots of good info, and particularly announcements of new ntp versions and the patches used with Linux for kernel timekeeping. 73, John N8UR jra@febo.com In message , Ma stenbrook Gary-G13216 writes: >So far, this thread has addressed Wintel machines. Could anyone please >comment on either Sun/Solaris or Linux applications to address this need? >(I'm getting ready to setup time serving on my internal network, but won't >have a wintel box available. First choice: my ThinLinux based >router/firewall from edge.fireplug.net, second choice: SPARCstation LX >internal network server w/ Solaris 7) Thanks! Apologies if someone has >already addressed this question back in the archives... > >73's > >Gary N8DMT > >Gary Mastenbrook, Product Visioneering, Motorola, Inc. >50 E. Commerce Drive, Schaumburg, IL 60173 >Email: g13216@email.mot.com >Work Home Page: http://www.mot.com/telematics >Personal Home Page: http://www.qsl.net/n8dmt > > >-----Original Message----- >From: Jeff King [mailto:jeff@aerodata.net] >Sent: Monday, April 10, 2000 11:50 PM >To: TAPR Special Interest Group >Subject: [tacgps] Re: Using TAC-2 on network > > >It was my understanding, as of 4 months ago, that Tardis didn't >support a 1PPS signal. The only think I found that did that was >the professional version of TAC32, and it wasn't cheap. > >Now, I have heard that there is a program that comes with WindowsNT >that can act as a network time server, I'm not 100% sure it supports >the 1PPS signal though. > >Without this 1PPS signal, your depending on your serial port to set the >time. > >Now, I think Tardis does support the Jupiter binary serial mode, which is >more >predictable then nema. > >-Jeff > >At 06:57 AM 4/8/00 +0000, bert weis wrote: >>Do you know Tardis ? This is a time server that can obtain the correct time >>from several sources, including GPStiming. It runs on >WIN95/WIN98/NT/WIN2000 >>computers without any trouble and sends ntp packets at a definable rate. >The >>"client" computers run K95, a very small program which picks uo these >>packets and synchronises the clocks. I have it running with a TAC-32 board >>for almost a year now without any problem at all. >> >>Tardis/K95 is shareware and can be found at http://www.kaska.demon.co.uk >> >> >>-----Oorspronkelijk bericht----- >>Van: Chris Dapples >>Aan: TAPR Special Interest Group >>Datum: donderdag 6 april 2000 17:23 >>Onderwerp: [tacgps] Using TAC-2 on network >> >> >>>Hi All, >>> Some time ago there was a posting on how to setup the TAC-2 to set the >>time >>>on all computers on a Linux network. I am wondering if someone knows how >>to >>>do this >>>for a Windows2000 network? >>> Chris/KF7KN >>> ccdapple@wtp.net >>> >>> >>>--- >>>You are currently subscribed to tacgps as: on1awb@skynet.be >>>To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org >>> >>> >> >> >>--- >>You are currently subscribed to tacgps as: JEFF@MICH.COM >>To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org > > >--- >You are currently subscribed to tacgps as: G13216@EMAIL1.WES.MOT.COM >To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org > >--- >You are currently subscribed to tacgps as: JRA@FEBO.COM >To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Tue Apr 18 05:00:28 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id FAA00183 for ; Tue, 18 Apr 2000 05:00:27 -0500 (CDT) From: "Darryl Smith" To: "TAPR Special Interest Group" Subject: [tacgps] NTP 4 and ONCORE VP 8.8 Date: Tue, 18 Apr 2000 19:59:21 +1000 Message-ID: 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-MimeOLE: Produced By Microsoft MimeOLE V4.72.3110.3 Importance: Normal List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" X-Message-Id: <001101bfa91c$c75247e0$32ae2acb@dell.radio-active.net.au> Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk G'Day All.... I am trying to get NTP 4 working on one of my LINUX boxes and am having problems... I have linked /dev/oncore.serial.1 to /dev/ttyC0, and also wired the serial port so that /dev/ttyC4,5,6 and 7 are getting the same data READ ONLY. There is no problem with the hardware. MOTRTCM is running at the moment on /dev/ttyC7 with no problems, generating dGPS data... and feeding it into aprsD. Opening a TERMINAL session on /dev/ttyC0 or /dev/oncore.serial.1 brings up the ONCORE data.... I am getting nowhere slowly.... I would appreciate some help. I am attempting to use the ONCORE driver in NTP. I have read the new MINI-HOWTO on www.ntp.org, and am amazed at how technical a mini-howto that is supposed to be non-technical is... And how long it is... The documentation for NTP seems to be nothing more than the RFC and the CODE. Any help would be appreciated... Darryl VK2TDS p.s. I can open the machine up if someone wants to have a look round... thanks to a permament internet connection... The machine only runs as a terminal server (10 serial ports) and a dGPS server, and soon a time-server.... ------- At one stage the logs said... Apr 17 22:25:58 terminal ntpd[2920]: using kernel phase-lock loop 0041 Apr 17 22:25:58 terminal ntpd[2920]: refclock_newpeer: clock type 30 invalid 1 Apr 17 22:25:58 terminal ntpd[2920]: configuration of 127.127.30.1 failed Apr 17 22:25:58 terminal ntpd[2920]: frequency initialized 0.000 from /var/lib/ Apr 17 22:25:58 terminal ntpd[2920]: using kernel phase-lock loop 0041 Apr 17 22:26:04 terminal ntpd[2922]: ntpd 4.0.99i Mon Apr 17 23:09:20 EST 2000 Apr 17 22:26:04 terminal ntpd[2922]: precision = 17 usec Apr 17 22:26:04 terminal ntpd[2922]: using kernel phase-lock loop 0041 Apr 17 22:26:04 terminal ntpd[2922]: refclock_newpeer: clock type 30 invalid 1 Apr 17 22:26:04 terminal ntpd[2922]: configuration of 127.127.30.1 failed Apr 17 22:26:04 terminal ntpd[2922]: frequency initialized 0.000 from /var/lib/ my ntp.conf file is # NTP configuration file (ntp.conf) server 127.127.30.1 mode 0 minpoll 4 maxpoll 4 driftfile /var/lib/ntp/ntp.drift # remember the drift value logfile /var/log/ntp/xntpd # log file statsdir /var/log/ntp/ # directory for stats files statistics loopstats peerstats clockstats # keep these stats filegen loopstats file loopstats type day enable filegen peerstats file peerstats type day enable filegen clockstats file clockstats type day enable --------- Darryl Smith, VK2TDS POBox 169 Ingleburn NSW 2565 Australia Mobile Number 0412 929 634 [+61 4 12 929 634 International] Darryl@radio-active.net.au | www.radio-active.net.au for domain names --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Fri Apr 21 11:02:49 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id LAA05308 for ; Fri, 21 Apr 2000 11:02:48 -0500 (CDT) Message-Id: Subject: [tacgps] M12 - not ready for prime timing Date: Fri, 21 Apr 2000 10:01:25 -0700 x-sender: ebs@biophysics.lanl.gov From: Brooks Shera To: "TAPR Special Interest Group" Mime-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" X-Message-Id: <200004211600.KAA25352@lawyer.lanl.gov> Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk Yesterday I received my Oncore M12 eval kit with version 1.3 software from Synergy. The 1.3 software lets the M12 output pseudorange correction messages, so it could presumably serve as a dgps reference station. I haven't tested this feature yet. I was primarily interested in the quality of the 1 pps timing output for controlling a frequency standard. The Motorola spec says the 1 pps output is within +/- 500 nsec of UTC. This may be correct but the timing of the 1 pps (even in position hold mode) jumps back and forth but several hundred nsec from 1 second to the next. In this respect the performance is about 10 times poorer than the Motorola UT. Of course the M12 was not billed as a timing receiver, but I had hopes that it would be better than it seems to be. However, the good news is that the M12 eval kit is a super bargin. For $96 (until May 1) you get the M12 mounted on a PC board with LEDs, DB-9 I/O ports, a power supply, a Motorola mag mount gps antenna -- everything you need. Five minutes out of the box and I had it running under TAC32 and spitting out its position. All this and a 12 channel receiver! I await word from the DGPS guys in the group about it's performance in that area. Brooks --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Fri Apr 21 11:31:49 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id LAA06923 for ; Fri, 21 Apr 2000 11:31:48 -0500 (CDT) Message-ID: From: "Doug McKinney" To: "TAPR Special Interest Group" References: Subject: [tacgps] Re: M12 - not ready for prime timing Date: Fri, 21 Apr 2000 09:20:46 -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-MimeOLE: Produced By Microsoft MimeOLE V5.00.2919.6600 List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" X-Message-Id: <000801bfabad$8d4ba4e0$b10dcccf@gateway> Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk ----- Original Message ----- From: "Brooks Shera" To: "TAPR Special Interest Group" Sent: Friday, April 21, 2000 10:01 AM Subject: [tacgps] M12 - not ready for prime timing > Yesterday I received my Oncore M12 eval kit with version 1.3 software > from Synergy. The 1.3 software lets the M12 output pseudorange > correction messages, so it could presumably serve as a dgps reference > station. I haven't tested this feature yet. > > I was primarily interested in the quality of the 1 pps timing output for > controlling a frequency standard. The Motorola spec says the 1 pps > output is within +/- 500 nsec of UTC. This may be correct but the timing > of the 1 pps (even in position hold mode) jumps back and forth but > several hundred nsec from 1 second to the next. In this respect the > performance is about 10 times poorer than the Motorola UT. Of course the > M12 was not billed as a timing receiver, but I had hopes that it would be > better than it seems to be. Talking to Art, a few months ago, about the demise of the VP, it was found out that the Xtal used for the VP was no longer going to be made by the vendor for Motorola. So, that may answer a possible reason for the poor quality (lack of an acceptable Xtal replacement). I can only assume that the UT+ is using a simular Xtal, that the VP used, and that the few remaining vendor stocks may be being used to support the UT+. Motorola has seen the market pressure for 12 channels and even though they beleive that 8 is enough for almost all navigation, they may have fallen to market demands for 12 channels and at a lower cost. Steve Bible and I are looking into the M12 DGPS. The literature is not stating what is really possible. I sent my early version of the M12 to Steve to evaluate, but it needs a filmware update. He received a new unit from Art, last week, and just got home and will be testing for DGPS. If it is successful Steve and I will be putting together a DGPS Ref Station board in SMD. I was considering the addition of the timing circuit, on the board, but now need to see if it's even worth considering! Doug > > However, the good news is that the M12 eval kit is a super bargin. For > $96 (until May 1) you get the M12 mounted on a PC board with LEDs, DB-9 > I/O ports, a power supply, a Motorola mag mount gps antenna -- > everything you need. Five minutes out of the box and I had it running > under TAC32 and spitting out its position. All this and a 12 channel > receiver! > > I await word from the DGPS guys in the group about it's performance in > that area. > > Brooks > > --- > You are currently subscribed to tacgps as: KC3RL@MCKTECH.COM > To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org > --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Fri Apr 21 12:22:30 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id MAA09239 for ; Fri, 21 Apr 2000 12:22:29 -0500 (CDT) Message-ID: Date: Fri, 21 Apr 2000 13:21:00 -0400 From: Bob Smith Organization: @Home Network Member X-Accept-Language: en MIME-Version: 1.0 To: "TAPR Special Interest Group" Subject: [tacgps] Re: M12 - not ready for prime timing References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" X-Message-Id: <39008DFC.CB61BE71@home.com> Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk Can anyone point me at a source of information on this M12 evaluation kit, i.e., ordering info, from whom, etc. Thanks Bob Smith, WA4YPV Doug McKinney wrote: > > ----- Original Message ----- > From: "Brooks Shera" > To: "TAPR Special Interest Group" > Sent: Friday, April 21, 2000 10:01 AM > Subject: [tacgps] M12 - not ready for prime timing > > > Yesterday I received my Oncore M12 eval kit with version 1.3 software > > from Synergy. The 1.3 software lets the M12 output pseudorange > > correction messages, so it could presumably serve as a dgps reference > > station. I haven't tested this feature yet. > > > > I was primarily interested in the quality of the 1 pps timing output for > > controlling a frequency standard. The Motorola spec says the 1 pps > > output is within +/- 500 nsec of UTC. This may be correct but the timing > > of the 1 pps (even in position hold mode) jumps back and forth but > > several hundred nsec from 1 second to the next. In this respect the > > performance is about 10 times poorer than the Motorola UT. Of course the > > M12 was not billed as a timing receiver, but I had hopes that it would be > > better than it seems to be. > > Talking to Art, a few months ago, about the demise of the VP, it was found > out that the Xtal used for the VP was no longer going to be made by the > vendor for Motorola. So, that may answer a possible reason for the poor > quality (lack of an acceptable Xtal replacement). I can only assume that > the UT+ is using a simular Xtal, that the VP used, and that the few > remaining vendor stocks may be being used to support the UT+. Motorola has > seen the market pressure for 12 channels and even though they beleive that 8 > is enough for almost all navigation, they may have fallen to market demands > for 12 channels and at a lower cost. > > Steve Bible and I are looking into the M12 DGPS. The literature is not > stating what is really possible. I sent my early version of the M12 to > Steve to evaluate, but it needs a filmware update. He received a new unit > from Art, last week, and just got home and will be testing for DGPS. If it > is successful Steve and I will be putting together a DGPS Ref Station board > in SMD. I was considering the addition of the timing circuit, on the board, > but now need to see if it's even worth considering! > > Doug > > > > > However, the good news is that the M12 eval kit is a super bargin. For > > $96 (until May 1) you get the M12 mounted on a PC board with LEDs, DB-9 > > I/O ports, a power supply, a Motorola mag mount gps antenna -- > > everything you need. Five minutes out of the box and I had it running > > under TAC32 and spitting out its position. All this and a 12 channel > > receiver! > > > > I await word from the DGPS guys in the group about it's performance in > > that area. > > > > Brooks > > > > --- > > You are currently subscribed to tacgps as: KC3RL@MCKTECH.COM > > To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org > > > > --- > You are currently subscribed to tacgps as: bobsmith5@home.com > To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org -- --------- Avoid computer viruses -- Practice safe hex ------------- * * Specializing in small, cost effective embedded control systems * * Robert L. (Bob) Smith Smith Machine Works, Inc. internet bobsmith5@home.com 9900 Lumlay Road landline 804/745-1065 Richmond, Virginia 23236+1004 --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Fri Apr 21 12:34:23 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id MAA09698 for ; Fri, 21 Apr 2000 12:34:22 -0500 (CDT) Message-ID: From: "Kirby, Brian" To: "TAPR Special Interest Group" Subject: [tacgps] Re: M12 - not ready for prime timing Date: Fri, 21 Apr 2000 12:25:50 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01BFABB6.A3ACC18E" List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" X-Message-Id: Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. ------_=_NextPart_001_01BFABB6.A3ACC18E Content-Type: text/plain; charset="iso-8859-1" http://www.synergy-gps.com/ on this page > ---------- > From: Bob Smith[SMTP:bobsmith5@home.com] > Reply To: TAPR Special Interest Group > Sent: Friday, April 21, 2000 12:21 PM > To: TAPR Special Interest Group > Subject: [tacgps] Re: M12 - not ready for prime timing > > Can anyone point me at a source of information on this M12 > evaluation > kit, i.e., ordering info, from whom, etc. > > Thanks Bob Smith, WA4YPV > > > Doug McKinney wrote: > > > > ----- Original Message ----- > > From: "Brooks Shera" > > To: "TAPR Special Interest Group" > > Sent: Friday, April 21, 2000 10:01 AM > > Subject: [tacgps] M12 - not ready for prime timing > > > > > Yesterday I received my Oncore M12 eval kit with version 1.3 software > > > from Synergy. The 1.3 software lets the M12 output pseudorange > > > correction messages, so it could presumably serve as a dgps reference > > > station. I haven't tested this feature yet. > > > > > > I was primarily interested in the quality of the 1 pps timing output > for > > > controlling a frequency standard. The Motorola spec says the 1 pps > > > output is within +/- 500 nsec of UTC. This may be correct but the > timing > > > of the 1 pps (even in position hold mode) jumps back and forth but > > > several hundred nsec from 1 second to the next. In this respect the > > > performance is about 10 times poorer than the Motorola UT. Of course > the > > > M12 was not billed as a timing receiver, but I had hopes that it would > be > > > better than it seems to be. > > > > Talking to Art, a few months ago, about the demise of the VP, it was > found > > out that the Xtal used for the VP was no longer going to be made by the > > vendor for Motorola. So, that may answer a possible reason for the poor > > quality (lack of an acceptable Xtal replacement). I can only assume > that > > the UT+ is using a simular Xtal, that the VP used, and that the few > > remaining vendor stocks may be being used to support the UT+. Motorola > has > > seen the market pressure for 12 channels and even though they beleive > that 8 > > is enough for almost all navigation, they may have fallen to market > demands > > for 12 channels and at a lower cost. > > > > Steve Bible and I are looking into the M12 DGPS. The literature is not > > stating what is really possible. I sent my early version of the M12 to > > Steve to evaluate, but it needs a filmware update. He received a new > unit > > from Art, last week, and just got home and will be testing for DGPS. If > it > > is successful Steve and I will be putting together a DGPS Ref Station > board > > in SMD. I was considering the addition of the timing circuit, on the > board, > > but now need to see if it's even worth considering! > > > > Doug > > > > > > > > However, the good news is that the M12 eval kit is a super bargin. For > > > $96 (until May 1) you get the M12 mounted on a PC board with LEDs, > DB-9 > > > I/O ports, a power supply, a Motorola mag mount gps antenna -- > > > everything you need. Five minutes out of the box and I had it running > > > under TAC32 and spitting out its position. All this and a 12 channel > > > receiver! > > > > > > I await word from the DGPS guys in the group about it's performance in > > > that area. > > > > > > Brooks > > > > > > --- > > > You are currently subscribed to tacgps as: KC3RL@MCKTECH.COM > > > To unsubscribe send a blank email to > leave-tacgps-6754G@lists.tapr.org > > > > > > > --- > > You are currently subscribed to tacgps as: bobsmith5@home.com > > To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org > > -- > > --------- Avoid computer viruses -- Practice safe hex > ------------- > * * Specializing in small, cost effective embedded control > systems * * > Robert L. (Bob) Smith Smith Machine Works, Inc. > internet bobsmith5@home.com 9900 Lumlay Road > landline 804/745-1065 Richmond, Virginia > 23236+1004 > > --- > You are currently subscribed to tacgps as: brian.kirby@msfc.nasa.gov > To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org > ------_=_NextPart_001_01BFABB6.A3ACC18E Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable RE: [tacgps] Re: M12 - not ready for prime timing

http://www.synergy-gps.com/ on this page

    ----------
    From:   = Bob = Smith[SMTP:bobsmith5@home.com]
    Reply To: =       TAPR Special Interest Group
    Sent:   = Friday, April 21, 2000 12:21 = PM
    To: =     TAPR Special = Interest Group
    Subject: =        [tacgps] Re: M12 - not ready for prime timing

    Can anyone point me at a source of = information on this M12
    evaluation
    kit, i.e., ordering info, from whom, = etc.

            Thanks Bob Smith, WA4YPV


    Doug McKinney wrote:
    >
    > ----- Original Message = -----
    > From: "Brooks Shera" = <ebs@lanl.gov>
    > To: "TAPR Special Interest = Group" <tacgps@lists.tapr.org>
    > Sent: Friday, April 21, 2000 = 10:01 AM
    > Subject: [tacgps] M12 - not = ready for prime timing
    >
    > > Yesterday I received my = Oncore M12 eval kit with version 1.3 software
    > > from Synergy.  The 1.3 = software lets the M12 output pseudorange
    > > correction messages, so it = could presumably serve as a dgps reference
    > > station.  I haven't = tested this feature yet.
    > >
    > > I was primarily interested = in the quality of the 1 pps timing output for
    > > controlling a frequency = standard.  The Motorola spec says the 1 pps
    > > output is within +/- 500 = nsec of UTC. This may be correct but the timing
    > > of the 1 pps (even in = position hold mode) jumps back and forth but
    > > several hundred nsec from 1 = second to the next. In this respect the
    > > performance is about 10 = times poorer than the Motorola UT.  Of course the
    > > M12 was not billed as a = timing receiver, but I had hopes that it would be
    > > better than it seems to = be.
    >
    > Talking to Art, a few months = ago, about the demise of the VP, it was found
    > out that the Xtal used for the = VP was no longer going to be made by the
    > vendor for Motorola.  So, = that may answer a possible reason for the poor
    > quality (lack of an acceptable = Xtal replacement).  I can only assume that
    > the UT+ is using a simular Xtal, = that the VP used, and that the few
    > remaining vendor stocks may be = being used to support the UT+.  Motorola has
    > seen the market pressure for 12 = channels and even though they beleive that 8
    > is enough for almost all = navigation, they may have fallen to market demands
    > for 12 channels and at a lower = cost.
    >
    > Steve Bible and I are looking = into the M12 DGPS.  The literature is not
    > stating what is really = possible.  I sent my early version of the M12 to
    > Steve to evaluate, but it needs = a filmware update.  He received a new unit
    > from Art, last week, and just = got home and will be testing for DGPS.  If it
    > is successful Steve and I will = be putting together a DGPS Ref Station board
    > in SMD.  I was considering = the addition of the timing circuit, on the board,
    > but now need to see if it's even = worth considering!
    >
    > Doug
    >
    > >
    > > However, the good news is = that the M12 eval kit is a super bargin. For
    > > $96 (until May 1) you get = the M12 mounted on a PC board with LEDs, DB-9
    > > I/O ports, a power supply, = a Motorola mag mount gps antenna  --
    > > everything you need.  = Five minutes out of the box and I had it running
    > > under TAC32 and spitting = out its position. All this and a 12 channel
    > > receiver!
    > >
    > > I await word from the DGPS = guys in the group about it's performance in
    > > that area.
    > >
    > > Brooks
    > >
    > > ---
    > > You are currently = subscribed to tacgps as: KC3RL@MCKTECH.COM
    > > To unsubscribe send a blank = email to leave-tacgps-6754G@lists.tapr.org
    > >
    >
    > ---
    > You are currently subscribed to = tacgps as: bobsmith5@home.com
    > To unsubscribe send a blank = email to leave-tacgps-6754G@lists.tapr.org

    --

    ---------  Avoid computer = viruses  --  Practice safe hex
    -------------
     * * Specializing in small, cost = effective embedded control
    systems * *
    Robert L. (Bob) Smith   =         =         Smith Machine Works, = Inc.
    internet   = bobsmith5@home.com          = ; 9900 Lumlay Road
    landline   804/745-1065 =             =     Richmond, Virginia
    23236+1004

    ---
    You are currently subscribed to = tacgps as: brian.kirby@msfc.nasa.gov
    To unsubscribe send a blank email to = leave-tacgps-6754G@lists.tapr.org

------_=_NextPart_001_01BFABB6.A3ACC18E-- --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Fri Apr 21 14:41:22 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id OAA14350 for ; Fri, 21 Apr 2000 14:41:22 -0500 (CDT) Message-Id: To: "TAPR Special Interest Group" Subject: [tacgps] Re: M12 - not ready for prime timing (NTP) In-Reply-To: Your message of "Fri, 21 Apr 2000 10:01:25 PDT." Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Fri, 21 Apr 2000 13:38:17 -0600 From: Reg Clemens List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" X-Message-Id: <200004211938.NAA12753@orion.dwf.com> Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk Just a note to let you know that I AM adding M12 support to the ONCORE Driver in NTP. I have the manual, but haven't received my eval kit from Synergy yet, so it will be a couple of weeks before the changes make it into the distributed version. Actually, in terms of timing, there are two problems. The worst is the fact that has been mentioned, The XTAL (and the timing specs ) are an order of magnitude worse than the VP. The other point, which takes some re-arrangement of the code is the fact that there is no TRAIM output either. Oh well, you hardly need a correction for the last 50ns when the unit is only speced at +-500ns... Reg.Clemens reg@dwf.com --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Fri Apr 21 15:58:21 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id PAA17206 for ; Fri, 21 Apr 2000 15:58:20 -0500 (CDT) Message-ID: Date: Fri, 21 Apr 2000 16:52:49 -0400 From: G Sanders Organization: bigfoot.com X-Accept-Language: en MIME-Version: 1.0 To: "TAPR Special Interest Group" Subject: [tacgps] Re: M12 - not ready for prime timing (NTP) References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" X-Message-Id: <3900BFA1.35807539@bigfoot.com> Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk I just got off the phone with Synergy, and ordered my M12 kit. She mentioned that due to the high demand, I shouldn't expect to receive my kit before May 15th. (Hopefully you got your order in a little before me!) Gary Sanders Reg Clemens wrote: > > Just a note to let you know that I AM adding M12 support to the ONCORE > Driver in NTP. I have the manual, but haven't received my eval kit > from Synergy yet, so it will be a couple of weeks before the changes > make it into the distributed version. --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Fri Apr 21 16:27:09 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id QAA18178 for ; Fri, 21 Apr 2000 16:27:09 -0500 (CDT) Message-Id: Subject: [tacgps] Re: M12 - not ready for prime timing Date: Fri, 21 Apr 2000 15:24:24 -0700 x-sender: ebs@biophysics.lanl.gov From: Brooks Shera To: "TAPR Special Interest Group" Mime-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" X-Message-Id: <200004212123.PAA07797@lawyer.lanl.gov> Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk Following Doug's lead I had a look at the stability of the local oscillator in the M12 (the @@Ha message outputs the time of each measurement epoch from which the oscillator offset from the L1 freq can be computed). I find that the frequency drifts only a few Hz (at 1575 MHz) from one second to the next. This is about the same drift as my Oncore VPs, and not enough to explain the timing jitter of the M12. I rather think the jitter can be traced back to the marketing department at Motorola - maybe the UT Sales Manager? :-) Even though the jitter is pretty large for disciplining a freq standard, it sure is good enough to set a PC clock and the users of TAC shouldn't notice any difference. I would'nt cross it off for these uses. Brooks >Doug KcKinney wrote: >Talking to Art, a few months ago, about the demise of the VP, it was found >out that the Xtal used for the VP was no longer going to be made by the >vendor for Motorola. So, that may answer a possible reason for the poor >quality (lack of an acceptable Xtal replacement). I can only assume that >the UT+ is using a simular Xtal, that the VP used, and that the few >remaining vendor stocks may be being used to support the UT+. Motorola has >seen the market pressure for 12 channels and even though they beleive that 8 >is enough for almost all navigation, they may have fallen to market demands >for 12 channels and at a lower cost. > >Steve Bible and I are looking into the M12 DGPS. The literature is not >stating what is really possible. I sent my early version of the M12 to >Steve to evaluate, but it needs a filmware update. He received a new unit >from Art, last week, and just got home and will be testing for DGPS. If it >is successful Steve and I will be putting together a DGPS Ref Station board >in SMD. I was considering the addition of the timing circuit, on the board, >but now need to see if it's even worth considering! --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Fri Apr 21 18:52:51 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id SAA22963 for ; Fri, 21 Apr 2000 18:52:50 -0500 (CDT) Message-Id: To: "TAPR Special Interest Group" Subject: [tacgps] Re: M12 - not ready for prime timing (NTP) In-Reply-To: Your message of "Fri, 21 Apr 2000 16:52:49 EDT." Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Fri, 21 Apr 2000 17:50:20 -0600 From: Reg Clemens List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" X-Message-Id: <200004212350.RAA13675@orion.dwf.com> Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk > > I just got off the phone with Synergy, and ordered my M12 kit. > > She mentioned that due to the high demand, I shouldn't expect > to receive my kit before May 15th. (Hopefully you got your > order in a little before me!) > > Gary Sanders > > > Reg Clemens wrote: > > > > Just a note to let you know that I AM adding M12 support to the ONCORE > > Driver in NTP. I have the manual, but haven't received my eval kit > > from Synergy yet, so it will be a couple of weeks before the changes > > make it into the distributed version. > > --- > You are currently subscribed to tacgps as: REG@DWF.COM > To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org > Yes, found it outside the front door when I went out for mail... -- Reg.Clemens reg@dwf.com --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Sat Apr 22 08:07:44 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id IAA01943 for ; Sat, 22 Apr 2000 08:07:43 -0500 (CDT) Message-ID: Date: Sat, 22 Apr 2000 09:04:44 -0400 From: Bob Smith Organization: @Home Network Member X-Accept-Language: en MIME-Version: 1.0 To: "TAPR Special Interest Group" Subject: [tacgps] Re: M12 - not ready for prime timing References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" X-Message-Id: <3901A36C.11D5DF5F@home.com> Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk Hello Brooks, I noted with much interest your posting on the M12 Evalution Kit from Synergy Systems. After some coorespondence with Synergy and additional visits to their web site the closest thing I can find is their M12 Evaluation Kit P/N 100001470 priced at $192.00. Is the $96.00 price that you mentioned correct? Is it a special promotional price? I will call them soon, but this being the Easter weekend, it may be several days before I can get through. Any clarification that you can provide will be most appreciated. Thank you es 73, de bob, wa4ypv Brooks Shera wrote: > > Yesterday I received my Oncore M12 eval kit with version 1.3 software > from Synergy. The 1.3 software lets the M12 output pseudorange > correction messages, so it could presumably serve as a dgps reference > station. I haven't tested this feature yet. > > I was primarily interested in the quality of the 1 pps timing output for > controlling a frequency standard. The Motorola spec says the 1 pps > output is within +/- 500 nsec of UTC. This may be correct but the timing > of the 1 pps (even in position hold mode) jumps back and forth but > several hundred nsec from 1 second to the next. In this respect the > performance is about 10 times poorer than the Motorola UT. Of course the > M12 was not billed as a timing receiver, but I had hopes that it would be > better than it seems to be. > > However, the good news is that the M12 eval kit is a super bargin. For > $96 (until May 1) you get the M12 mounted on a PC board with LEDs, DB-9 > I/O ports, a power supply, a Motorola mag mount gps antenna -- > everything you need. Five minutes out of the box and I had it running > under TAC32 and spitting out its position. All this and a 12 channel > receiver! > > I await word from the DGPS guys in the group about it's performance in > that area. > > Brooks > > --- > You are currently subscribed to tacgps as: bobsmith5@home.com > To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org -- --------- Avoid computer viruses -- Practice safe hex ------------- * * Specializing in small, cost effective embedded control systems * * Robert L. (Bob) Smith Smith Machine Works, Inc. internet bobsmith5@home.com 9900 Lumlay Road landline 804/745-1065 Richmond, Virginia 23236+1004 --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Sat Apr 22 08:27:30 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id IAA02315 for ; Sat, 22 Apr 2000 08:27:29 -0500 (CDT) Message-ID: From: "Doug McKinney" To: "TAPR Special Interest Group" References: Subject: [tacgps] Re: M12 - not ready for prime timing Date: Sat, 22 Apr 2000 06:25:09 -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-MimeOLE: Produced By Microsoft MimeOLE V5.00.2919.6600 List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" X-Message-Id: <000f01bfac5e$2ec48e80$dd0dcccf@gateway> Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk ----- Original Message ----- From: "Bob Smith" To: "TAPR Special Interest Group" Sent: Saturday, April 22, 2000 6:04 AM Subject: [tacgps] Re: M12 - not ready for prime timing > Hello Brooks, > > I noted with much interest your posting on the M12 Evalution > Kit from Synergy Systems. > > After some coorespondence with Synergy and additional visits > to their web site the closest thing I can find is their M12 > Evaluation Kit P/N 100001470 priced at $192.00. > > Is the $96.00 price that you mentioned correct? Is it a > special promotional price? I will call them soon, but this > being the Easter weekend, it may be several days before I > can get through. Yes, it is a promotion to the first 100 new customers, so don't delay! It is the $192 for $96! Doug > > Any clarification that you can provide will be most > appreciated. > > Thank you es 73, de bob, wa4ypv > > > > Brooks Shera wrote: > > > > Yesterday I received my Oncore M12 eval kit with version 1.3 software > > from Synergy. The 1.3 software lets the M12 output pseudorange > > correction messages, so it could presumably serve as a dgps reference > > station. I haven't tested this feature yet. > > > > I was primarily interested in the quality of the 1 pps timing output for > > controlling a frequency standard. The Motorola spec says the 1 pps > > output is within +/- 500 nsec of UTC. This may be correct but the timing > > of the 1 pps (even in position hold mode) jumps back and forth but > > several hundred nsec from 1 second to the next. In this respect the > > performance is about 10 times poorer than the Motorola UT. Of course the > > M12 was not billed as a timing receiver, but I had hopes that it would be > > better than it seems to be. > > > > However, the good news is that the M12 eval kit is a super bargin. For > > $96 (until May 1) you get the M12 mounted on a PC board with LEDs, DB-9 > > I/O ports, a power supply, a Motorola mag mount gps antenna -- > > everything you need. Five minutes out of the box and I had it running > > under TAC32 and spitting out its position. All this and a 12 channel > > receiver! > > > > I await word from the DGPS guys in the group about it's performance in > > that area. > > > > Brooks > > > > --- > > You are currently subscribed to tacgps as: bobsmith5@home.com > > To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org > > -- > > --------- Avoid computer viruses -- Practice safe hex > ------------- > * * Specializing in small, cost effective embedded control > systems * * > Robert L. (Bob) Smith Smith Machine Works, Inc. > internet bobsmith5@home.com 9900 Lumlay Road > landline 804/745-1065 Richmond, Virginia > 23236+1004 > > --- > You are currently subscribed to tacgps as: KC3RL@MCKTECH.COM > To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org > --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Sat Apr 22 17:19:23 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id RAA20506 for ; Sat, 22 Apr 2000 17:19:22 -0500 (CDT) Message-ID: Date: Sat, 22 Apr 2000 18:16:14 -0400 From: G Sanders Organization: bigfoot.com X-Accept-Language: en MIME-Version: 1.0 To: "TAPR Special Interest Group" Subject: [tacgps] Re: M12 - not ready for prime timing References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" X-Message-Id: <390224AE.509A15EC@bigfoot.com> Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk Scroll down on Synergy's home page. It's on the "bottom half" of the page (It's off the screen on my monitor when the page initially loads). It IS 96 bucks. I ordered mine a day or two ago, and they are quoting delivery around May 15th. Gary Sanders Bob Smith wrote: > > After some coorespondence with Synergy and additional visits > to their web site the closest thing I can find is their M12 > Evaluation Kit P/N 100001470 priced at $192.00. > > Is the $96.00 price that you mentioned correct? Is it a > special promotional price? --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Tue Apr 25 00:14:12 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id AAA29318 for ; Tue, 25 Apr 2000 00:14:11 -0500 (CDT) Date: Tue, 25 Apr 2000 0:13:15 Subject: [tacgps] Re: M12 - not ready for prime timing To: "TAPR Special Interest Group" From: "Brian Kirby" List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" Sender: bounce-tacgps-6754@lists.tapr.org Message-Id: Precedence: bulk I got a M12 eval kit today. I had a few problems getting it to take RTCM. The second comm port, has to have RTCM put in on Pin 2 (on the eval interface). By default, it is set to 9600 BPS. The @@Ao command allows you to set 9600/4800/2400. At 9600 and having the GPS in the binary mode, TAC32 only said DGPS. It did not show any delay time. When you switch to NEMA, TAC32 displays the delay time. Also, the second port appears to be wired to the first port. I could not shoot any command when RTCM was being injected. TAC32 said there was not a receiver. After disconnecting RTCM, it was OK. Also, noticed the receiver has a problem locking up on RTCM at 4800 Bps. The delay time would start at 4,5,6, seconds and then go to 15 to 60 seconds before it lock up again. Noticed a small crystal on the bottem of the GPS board. I did not take the board off the interface, but I plan to, to see its frequency. I'm wondering if we can inject a better, more stable frequency (in place of the crystal oscillator) and get stable timing out of the unit. TAC32 showed timing slipping up to 1100 Ns worst case. And a scope, compared to a Oncore VP, showed it all over the place. But for $99, I can't complain. The GPS board sure is small ! Also the antenna connector is a little bit smaller than the usual MCX. I use bias tees and power dividers to feed my units, so I had to cut the cord off the included antenna and put a connector on it to get to my power dividers (I was hoping to use a spare MCX cable I had). --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Tue Apr 25 13:02:44 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id NAA03766 for ; Tue, 25 Apr 2000 13:02:44 -0500 (CDT) Message-Id: To: "TAPR Special Interest Group" Subject: [tacgps] Re: M12 - not ready for prime timing In-Reply-To: Your message of "Tue, 25 Apr 2000 00:13:15." Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Tue, 25 Apr 2000 12:00:02 -0600 From: Reg Clemens List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" X-Message-Id: <200004251800.MAA16093@orion.dwf.com> Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk In your message you said > I use bias > tees and power dividers to feed my units, so I had to cut the cord off the > included antenna and put a connector on it to get to my power dividers Is this something you built up yourself, or is it a commercial product ($$$). I would like to split the signal coming down from the GPS antenna on my roof, but havent thought seriously about the problem yet. -- Reg.Clemens reg@dwf.com --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Tue Apr 25 15:36:13 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id PAA14250 for ; Tue, 25 Apr 2000 15:36:13 -0500 (CDT) Message-ID: From: Mastenbrook Gary-G13216 To: "TAPR Special Interest Group" Subject: [tacgps] RE: Multiple Receivers -- Single Antenna Date: Tue, 25 Apr 2000 15:35:16 -0500 MIME-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" X-Message-Id: <7195C03599D9D311BE580008C75697EB0A624B@il33exm01.wes.mot.com> Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk Reg- For my multiple receiver distribution system at home, I use Mini-Circuits* parts: Splitter, ZAPD-2, $54.95 new (2 way splitter) or ZA4PD-2, $89.95 new (4 way splitter) Bias-Tee, ZFBT-4R2G-FT, $59.95 new (only one needed for a two way split) I bought a ZAPD-2 and the bias-tee at a local hamfest for about $15 for the pair. The bias-tee keeps the bias supplied from the receivers separated, as well as providing a DC current sink for the approx. 20 mA antenna source current from the GPS receiver not DC-coupled to the antenna via the splitter. A 270 Ohm resistor is connected from the feedthrough pin to ground to make the second receiver "happy" during antenna current testing. Keep a look-out for this stuff and maybe you'll get it cheap! On the other hand, you'd be surprised how many people ask top dollar for little modules just because they have SMA or N connectors on them. I try to carry a Mini-Circuits catalog with me when I go to hamfests so I can show them what the NEW (with warranty) cost is, and then can usually negotiate a reasonable price for their used/untested merchandise. Besides, I can't keep all these numbers straight in my head so I need to look them up anyway! I don't mean to disregard the other approach to this problem: building a simple circuit which splits and provides DC isolation/termination to one of the branches. This would not be a tough design given the limited bandwidth requirements, but given the need for lumped elements and/or a stripline design plus packaging and connectors, I've chosen the used-but-inexpensive modular approach for my lab. Bolt it together and go! 73's Gary N8DMT *Usual Disclaimer: Own no stock or interest, just a regular customer... Gary Mastenbrook, Product Visioneering, Motorola, Inc. 50 E. Commerce Drive, Schaumburg, IL 60173 Email: g13216@email.mot.com Work Home Page: http://www.mot.com/telematics Personal Home Page: http://www.qsl.net/n8dmt -----Original Message----- From: Reg Clemens [mailto:reg@dwf.com] Sent: Tuesday, April 25, 2000 1:00 PM To: TAPR Special Interest Group Subject: [tacgps] Re: M12 - not ready for prime timing In your message you said > I use bias > tees and power dividers to feed my units, so I had to cut the cord off the > included antenna and put a connector on it to get to my power dividers Is this something you built up yourself, or is it a commercial product ($$$). I would like to split the signal coming down from the GPS antenna on my roof, but havent thought seriously about the problem yet. -- Reg.Clemens reg@dwf.com --- You are currently subscribed to tacgps as: G13216@EMAIL1.WES.MOT.COM To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Tue Apr 25 16:21:36 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id QAA16211 for ; Tue, 25 Apr 2000 16:21:36 -0500 (CDT) Message-Id: X-Sender: myoung@mail-hub Date: Tue, 25 Apr 2000 17:11:54 -0400 To: "TAPR Special Interest Group" From: "myoung" Subject: [tacgps] Re: M12 - not ready for prime timing In-Reply-To: References: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" X-Message-Id: <4.1.20000425170705.009897d0@mail-hub> Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk At 02:00 PM 4/25/00 , you wrote: >I would like to split the signal coming down from the GPS antenna on my roof, >but havent thought seriously about the problem yet. > > >-- > Reg.Clemens > reg@dwf.com I'm using a digital satellite splitter from Skyvision. Part #04-3000005. It sells for 10.95 plus shipping. Works great. If used with an active antenna the losses are negligible. www.skyvision.com Check it out. Mike, WB8CXO --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Tue Apr 25 16:26:18 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id QAA16387 for ; Tue, 25 Apr 2000 16:26:17 -0500 (CDT) From: "Richard M. Hambly" To: "TAPR Special Interest Group" Subject: [tacgps] RE: Multiple Receivers -- Single Antenna Date: Tue, 25 Apr 2000 17:20:11 -0400 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2919.6700 In-Reply-To: List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" X-Message-Id: Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk For a nice package check out http://www.fleetpc.com/accessories/accessories.html under GPS Antenna Splitters. This is the new home for WR, Inc. products. I use the "Loaded DC Blocked Splitter 1 Input 4 Outputs" part number ALDCBS1X4 with Hi-Isolation option. OK, so the list price of this one is $495 + $100. The passive 1x2 splitter, pn LDCBS1X2, is $295; the 4-way is $395. These prices are higher than other approaches but these are very nice units and are self-contained. Rick WB2TNL -----Original Message----- From: bounce-tacgps-5621@lists.tapr.org [mailto:bounce-tacgps-5621@lists.tapr.org]On Behalf Of Mastenbrook Gary-G13216 Sent: Tuesday, April 25, 2000 4:35 PM To: TAPR Special Interest Group Subject: [tacgps] RE: Multiple Receivers -- Single Antenna Reg- For my multiple receiver distribution system at home, I use Mini-Circuits* parts: Splitter, ZAPD-2, $54.95 new (2 way splitter) or ZA4PD-2, $89.95 new (4 way splitter) Bias-Tee, ZFBT-4R2G-FT, $59.95 new (only one needed for a two way split) I bought a ZAPD-2 and the bias-tee at a local hamfest for about $15 for the pair. The bias-tee keeps the bias supplied from the receivers separated, as well as providing a DC current sink for the approx. 20 mA antenna source current from the GPS receiver not DC-coupled to the antenna via the splitter. A 270 Ohm resistor is connected from the feedthrough pin to ground to make the second receiver "happy" during antenna current testing. Keep a look-out for this stuff and maybe you'll get it cheap! On the other hand, you'd be surprised how many people ask top dollar for little modules just because they have SMA or N connectors on them. I try to carry a Mini-Circuits catalog with me when I go to hamfests so I can show them what the NEW (with warranty) cost is, and then can usually negotiate a reasonable price for their used/untested merchandise. Besides, I can't keep all these numbers straight in my head so I need to look them up anyway! I don't mean to disregard the other approach to this problem: building a simple circuit which splits and provides DC isolation/termination to one of the branches. This would not be a tough design given the limited bandwidth requirements, but given the need for lumped elements and/or a stripline design plus packaging and connectors, I've chosen the used-but-inexpensive modular approach for my lab. Bolt it together and go! 73's Gary N8DMT *Usual Disclaimer: Own no stock or interest, just a regular customer... Gary Mastenbrook, Product Visioneering, Motorola, Inc. 50 E. Commerce Drive, Schaumburg, IL 60173 Email: g13216@email.mot.com Work Home Page: http://www.mot.com/telematics Personal Home Page: http://www.qsl.net/n8dmt -----Original Message----- From: Reg Clemens [mailto:reg@dwf.com] Sent: Tuesday, April 25, 2000 1:00 PM To: TAPR Special Interest Group Subject: [tacgps] Re: M12 - not ready for prime timing In your message you said > I use bias > tees and power dividers to feed my units, so I had to cut the cord off the > included antenna and put a connector on it to get to my power dividers Is this something you built up yourself, or is it a commercial product ($$$). I would like to split the signal coming down from the GPS antenna on my roof, but havent thought seriously about the problem yet. -- Reg.Clemens reg@dwf.com --- You are currently subscribed to tacgps as: G13216@EMAIL1.WES.MOT.COM To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org --- You are currently subscribed to tacgps as: RICK@CNSSYS.COM To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Tue Apr 25 22:29:37 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id WAA27964 for ; Tue, 25 Apr 2000 22:29:35 -0500 (CDT) Message-ID: From: "Kirby, Brian" To: "TAPR Special Interest Group" Subject: [tacgps] Re: M12 - not ready for prime timing Date: Tue, 25 Apr 2000 22:23:35 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01BFAF2E.CE3CA2E0" List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" X-Message-Id: Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. ------_=_NextPart_001_01BFAF2E.CE3CA2E0 Content-Type: text/plain I use mini-circuits bias tees and power dividers. I have a Motorola Antenna 97 mounted on a pie plate with some RF absorbent material on the ground plane. I cut the cable on the antenna so its only about 1 foot long. Then I change over to RG-213 for a 40 foot coax run. This runs into a bias tee, then a 2 way divider, with one leg going to a Oncore VP, the other leg going to a 4 way divider. On the output of each divider, is another bias tee. The first GPS, supplies the antenna power, by jumping around all the dividers to the antenna bias tee. The remaining bias tees are terminated with 200 ohm resistors so they will pull power and activate their antenna ports. I have 2 Oncores VPs, 1 M12, and 2 Garmin handhelds running on this system. The main reason I used bias tee's all the way around, is the mini-circuits divider's are transformer coupled and I do not know how much current they can take. A DBS satellite splitter should work OK, too. I attempted to make wilkinson dividers with 75 ohm coax quarter wave sections, and it worked but I had more loss than I expected. Thats why I went the mini-circuit route. There are splitters allready set up for GPS, where the first port feeds the antenna and the rest terminate in DC loads. I beleive Navtech has a 4 way, and it was under $400 or $500. Also, I have found some cheaper bias tee's than mini-circuits that work. A company called Dawn Satellite sells 4 Ghz bias tees for $19. They were made by Avantek. I do not have any test equipment to measure loss at 1.5 Ghz. Sub'ing them for the Mini-Circuits bias tee, did not show any more loss on the signal strengths on TAC32. > ---------- > From: Reg Clemens[SMTP:reg@dwf.com] > Reply To: TAPR Special Interest Group > Sent: Tuesday, April 25, 2000 1:00 PM > To: TAPR Special Interest Group > Subject: [tacgps] Re: M12 - not ready for prime timing > > In your message you said > > > I use bias > > tees and power dividers to feed my units, so I had to cut the cord off > the > > included antenna and put a connector on it to get to my power dividers > > Is this something you built up yourself, or is it a commercial product > ($$$). > I would like to split the signal coming down from the GPS antenna on my > roof, > but havent thought seriously about the problem yet. > > > -- > Reg.Clemens > reg@dwf.com > > > > --- > You are currently subscribed to tacgps as: brian.kirby@msfc.nasa.gov > To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org > ------_=_NextPart_001_01BFAF2E.CE3CA2E0 Content-Type: text/html Content-Transfer-Encoding: quoted-printable RE: [tacgps] Re: M12 - not ready for prime timing

I use mini-circuits = bias tees and power dividers.  I have a Motorola Antenna 97 = mounted on a pie plate with some RF absorbent material on the ground = plane.  I cut the cable on the antenna so its only about 1 foot = long.  Then I change over to RG-213 for a 40 foot coax run.  = This runs into a bias tee, then a 2 way divider, with one leg going to = a Oncore VP, the other leg going to a 4 way divider.  On the = output of each divider, is another bias tee.  The first GPS, = supplies the antenna power, by jumping around all the dividers to the = antenna bias tee.  The remaining bias tees are terminated with 200 = ohm resistors so they will pull power and activate their antenna = ports.  I have 2 Oncores VPs, 1 M12,  and 2 Garmin handhelds = running on this system.  The main reason I used bias tee's all the = way around, is the mini-circuits divider's are transformer coupled and = I do not know how much current they can take.

A DBS satellite = splitter should work OK, too. 

I attempted to make = wilkinson dividers with 75 ohm coax quarter wave sections, and it = worked but I had more loss than I expected.  Thats why I went the = mini-circuit route.

There are splitters = allready set up for GPS, where the first port feeds the antenna and the = rest terminate in DC loads.  I beleive Navtech has a 4 way, and it = was under $400 or $500.

Also, I have found = some cheaper bias tee's than mini-circuits that work.  A company = called Dawn Satellite sells 4 Ghz bias tees for $19.  They were = made by Avantek.  I do not have any test equipment to measure loss = at 1.5 Ghz.  Sub'ing them for the Mini-Circuits bias tee, did not = show any more loss on the signal strengths on TAC32.



    ----------
    From:   = Reg = Clemens[SMTP:reg@dwf.com]
    Reply To: =       TAPR Special Interest Group
    Sent:   = Tuesday, April 25, 2000 1:00 = PM
    To: =     TAPR Special = Interest Group
    Subject: =        [tacgps] Re: M12 - not ready for prime timing

    In your message you said

    > I use bias
    > tees and power dividers to feed = my units, so I had to cut the cord off the
    > included antenna and put a = connector on it to get to my power dividers

    Is this something you built up = yourself, or is it a commercial product ($$$).
    I would like to split the signal = coming down from the GPS antenna on my roof,
    but havent thought seriously about = the problem yet.


    --
             &nb= sp;           &nb= sp;           &nb= sp;      Reg.Clemens
             &nb= sp;           &nb= sp;           &nb= sp;      reg@dwf.com



    ---
    You are currently subscribed to = tacgps as: brian.kirby@msfc.nasa.gov
    To unsubscribe send a blank email to = leave-tacgps-6754G@lists.tapr.org

------_=_NextPart_001_01BFAF2E.CE3CA2E0-- --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Wed Apr 26 07:24:04 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id HAA28358 for ; Wed, 26 Apr 2000 07:24:04 -0500 (CDT) Sender: bounce-tacgps-6754@lists.tapr.org Message-ID: Date: Wed, 26 Apr 2000 07:21:12 -0500 From: Gerry Creager N5JXS Reply-To: "TAPR Special Interest Group" Organization: DaHouse X-Accept-Language: en MIME-Version: 1.0 To: "TAPR Special Interest Group" Subject: [tacgps] RE: Multiple Receivers -- Single Antenna References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio X-Message-Id: <3906DF38.EB64760F@cs.tamu.edu> Precedence: bulk "Richard M. Hambly" wrote: > > For a nice package check out > http://www.fleetpc.com/accessories/accessories.html under GPS Antenna > Splitters. This is the new home for WR, Inc. products. I use the "Loaded DC > Blocked Splitter 1 Input 4 Outputs" part number ALDCBS1X4 with Hi-Isolation > option. OK, so the list price of this one is $495 + $100. The passive 1x2 > splitter, pn LDCBS1X2, is $295; the 4-way is $395. > > These prices are higher than other approaches but these are very nice units > and are self-contained. WR make nice products and have elected to specialize in GPS... at least for now. They're a little pricey, but it depends on what you want and need. If you're looking at good quality for lab work, they're worth a look. If this is pure hobby, they may be out of the price zone. -- Gerry Creager "Due to the confusion from too many genres of music, we have decided to put both country music and rap music into the genre of Crap music." --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Wed Apr 26 07:58:34 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id HAA29396 for ; Wed, 26 Apr 2000 07:58:33 -0500 (CDT) Sender: bounce-tacgps-6754@lists.tapr.org Message-ID: Date: Wed, 26 Apr 2000 07:57:18 -0500 From: Gerry Creager N5JXS Reply-To: "TAPR Special Interest Group" Organization: DaHouse X-Accept-Language: en MIME-Version: 1.0 To: "TAPR Special Interest Group" Subject: [tacgps] Re: M12 - not ready for prime timing References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio X-Message-Id: <3906E7AE.4430F397@cs.tamu.edu> Precedence: bulk Avantek hardware have been good in my past experiences at these frequencies. 73, gerry ps: MSFC, huh? I'm an STS-47/Spacelab-J alumnus, and spent more'n a little time on your fair campus for training and mission. -- Gerry Creager "Due to the confusion from too many genres of music, we have decided to put both country music and rap music into the genre of Crap music." --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Wed Apr 26 11:47:13 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id LAA07318 for ; Wed, 26 Apr 2000 11:47:13 -0500 (CDT) Message-ID: Date: Wed, 26 Apr 2000 16:45:58 +0000 From: Dr Thomas A Clark Organization: NASA/GSFC X-Accept-Language: en MIME-Version: 1.0 To: "TAPR Special Interest Group" Subject: [tacgps] RE: Multiple Receivers -- Single Antenna References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" X-Message-Id: <39071D46.37A3C2@tomcat.gsfc.nasa.gov> Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk Reg Clemens asked about GPS power splitters. Let me chime in with a few comments. To do this job, you have to consider four different problems: 1. Spltting the L-Band RF signal. 2. Making sure that the DC bias generated by the rcvr doesn't get get shorted in a way that zaps the receivers. 3. Making sure that the proper DC bias then gets to the antenna. 4. How much money do you want to pay? If (4) is no problem, then your easiest solution is the one suggested by WB2TNL -- get a splitter from WR at http://www.fleetpc.com/accessories/accessories.html. My personal recommendation is a 4-way HILDCBS1X4-N at $595 and then you don't need to worry about (1), (2) or (3). The "H" High Isolation version means that a receiver that GENERATES RFI (like happens with the geodetic TurboRogue's first LO radiation) may not clobber other receivers in use at the site. [Because of this RFI problem, I had to develop a ~80-90 dB cross-port isolation splitter for my GODE IGS site, where we usually have a half-dozen receivers running at a time.] But if you are seeking a typical amateur (i.e. cheap bastard) solution, then (1), (2) and (3) need to be considered. The MiniCircuits 2- and 4-way splitters that were suggested work fine. If you use an Ohmmeter to probe the DC response, you will find that all the center pins on the coax connectors are connected together and there is no continuity to ground. This means that if you put two receivers on one of these splitters, then the bias outputs will "fight" eache other and the receiver with the higher voltage will try to push current into the receiver with a lower bias voltage. If you are using the new M12, the solution is trivial -- there is a jumper on the interface board that connects the rcvr's antenna bias to either a 5v or 3.3v source. Just pull this jumper, and you have disconnected the M12's bias source, leaving the MCX connector floating to DC and the two receivers won't "fight". Since the MiniCircuits splitter has DC continuity, the other receiver will drive the antenna preamp just fine. Another type of splitter you may find at hamfests is a 3dB or 10 dB Directional Coupler. The 3 dB units (also called quadrature hybrids) are typically shaped like the letter "H". The signal from the two ports on one side is split into the two ports on the opposite side. You will also find that these devices have DC continuity between diagonally opposite ports. So you put an antenna on one side, and the two rcvrs on the opposite side, and one rcvr provides the DC bias. Now all we have to do is to terminate the 4th port. Here I have used a 51 ohm resistor in series with a capacitor for this. I use one of the old button mica caps that will fit inside a type-N connector shell, with the resistor going to the center pin. A splitter of mine just like this has been on loan to Steve Bible (N7HPR) for some time and is what he used for the zero-baseline testing on the TAPR DGPS module. If you find a 6 or 10 dB couple, they work fine too. You will find that the "thru" and "tap" sides have DC continuity. I have used terminators similar to that I just described with such couplers on numerous occasions. At the hamfests, you will sometimes find a Type-N or SMA series capacitor. These units were used to isolate both the shield and center conductor of coax to break up DC and AC power-line noise loops. If you find these, gobble them up -- they are great for solving your DC bias isolation problems. A comment was made about providing a 200-ohm DC path for the unused port. Yes, you can do this, but I have yet to see a receiver that really cares if the antenna has a DC path. It may REPORT that the antenna is disconnected, but it doesn't really care. Some antennas (like the quad-helix that Garmin uses as their flip-up antenna on handhelds) have no preamp and no DC path anyway. If you are going to use a 200 ohm resistor, you may as well have it drive a LED, and then you have an indicator that the receiver is on (and current will still be drawn). The suggestion was made about using TV hardware. I'll note that the IF used for the K-band satellite systems (i.e. DirecTV) is 900-1500 MHz, and much of the hardware is suitable for use at GPS's 1575 MHz frequency, although the hardware uses 75 ohm Type-F connectors. The high quality foam RG-6 cable works quite well for GPS, and the 75 vs 50 ohm issue only means you are fighting a 1.5:1 VSWR on the cable and taking a couple of tenths of a dB loss from it. Since the DSS TV dishes have their power supplied thru the coax, the DSS power splitters have at least addressed the DC issues. But I advise you use an ohmmeter in the SALT Treaty "Trust but Verify" mode. Try the TV parts -- they are cheap! Hope these ideas helped -- 73, Tom --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Wed Apr 26 12:06:35 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id MAA07917 for ; Wed, 26 Apr 2000 12:06:34 -0500 (CDT) Message-Id: X-Sender: davem@mail.cs.ubc.ca Date: Wed, 26 Apr 2000 10:07:23 -0700 To: "TAPR Special Interest Group" From: Dave Martindale Subject: [tacgps] RE: Multiple Receivers -- Single Antenna In-Reply-To: References: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" X-Message-Id: <3.0.6.32.20000426100723.00833660@mail.cs.ubc.ca> Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk >A comment was made about providing a 200-ohm DC path for the unused >port. Yes, you can do this, but I have yet to see a receiver that really >cares if the antenna has a DC path. It may REPORT that the antenna is >disconnected, but it doesn't really care. Some antennas (like the >quad-helix that Garmin uses as their flip-up antenna on handhelds) have >no preamp and no DC path anyway. There is at least one type of receiver that DOES need current drawn from its antenna jack. The Garmin 12XL has an internal patch antenna plus an external antenna jack. Internal circuitry senses the current drawn from the antenna jack by the external antenna and switches the RF input from the internal antenna to the external antenna. If you plug in a passive external antenna, or the DC-blocked output of a splitter, the GPS continues to use the internal patch antenna - it doesn't know that it has an external signal source. That's why the DC load is needed on the ports that don't power the antenna. The Garmin eMap uses the same arrangement of internal antenna plus external antenna jack, so it probably also needs the same load. The Garmin receivers with external antennas don't need the load, since they don't do any antenna switching internally - they just take whatever signal comes in the antenna jack. Dave --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org From bounce-tacgps-6754@lists.tapr.org Wed Apr 26 15:22:26 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id PAA14625 for ; Wed, 26 Apr 2000 15:22:25 -0500 (CDT) Message-ID: Date: Wed, 26 Apr 2000 13:17:42 -0700 (PDT) From: Jim Korenz Subject: [tacgps] RE:Single Antenna Multiple Receivers To: "TAPR Special Interest Group" MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Special Interest Group" X-Message-Id: <20000426201742.24074.qmail@web4301.mail.yahoo.com> Sender: bounce-tacgps-6754@lists.tapr.org Precedence: bulk Hi All, I have been using the RCA DSS splitter model D800 from Radio Shack. The freq range is listed as 40-2150 MHz and it includes the steering diodes to power the GPS antenna. I think it costs about $12. It has 3 "F" connectors and is 75 ohms, but I use 3 BNC to "F" adapters and have had no problems. I have the older Motorola "hockey puck" antenna with about 30 feet of RG-58 through the basement window. I have run a VP as the DGPS ref station and have used a VP, GPS III, and Magellan XL as rovers. The only problem with this arrangement is that the highest voltage will power the antenna. If your receiver senses current, none of mine did, it may complain. Jim Korenz N8PXW __________________________________________________ Do You Yahoo!? Send online invitations with Yahoo! Invites. http://invites.yahoo.com --- You are currently subscribed to tacgps as: lyris.tacgps@tapr.org To unsubscribe send a blank email to leave-tacgps-6754G@lists.tapr.org