Looking for a non-surplus ( e.g. A current catalog item) gps module, with serial ( ttl or rs232) and 1 pps. Doesn't need high performance(100ns is fine), but should be < $100 ish. Something with an integrated antenna would be great.

the Ublox LEA-6 is pretty cheap and has good performance. and the SUP500F that Brad has been doing group orders on has worked pretty well for me. eric On Mon, Nov 12, 2012 at 10:28 AM, Jim Lux <jimlux@earthlink.net> wrote: > Looking for a non-surplus ( e.g. A current catalog item) gps module, with serial ( ttl or rs232) and 1 pps. Doesn't need high performance(100ns is fine), but should be < $100 ish. Something with an integrated antenna would be great. > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. -- --Eric _________________________________________ Eric Garner

Hello You could have a look to the Trimble Anapala and Silvana. http://www.trimble.com/embeddedsystems/antenna-companion-modules.aspx Regards Luc Le 12 nov. 2012 à 19:45, Eric Garner <garnere@gmail.com> a écrit : > the Ublox LEA-6 is pretty cheap and has good performance. and the > SUP500F that Brad has been doing group orders on has worked pretty > well for me. > > eric > > On Mon, Nov 12, 2012 at 10:28 AM, Jim Lux <jimlux@earthlink.net> wrote: >> Looking for a non-surplus ( e.g. A current catalog item) gps module, with serial ( ttl or rs232) and 1 pps. Doesn't need high performance(100ns is fine), but should be < $100 ish. Something with an integrated antenna would be great. >> >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. > > > > -- > --Eric > _________________________________________ > Eric Garner > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. >

On Mon, Nov 12, 2012 at 10:28 AM, Jim Lux <jimlux@earthlink.net> wrote: > Looking for a non-surplus ( e.g. A current catalog item) gps module, with serial ( ttl or rs232) and 1 pps. Doesn't need high performance(100ns is fine), but should be < $100 ish. Something with an integrated antenna would be great. > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. i just used this to with a raspberry pi with good success. https://www.adafruit.com/products/746 james

i just used this to with a raspberry pi with good success. https://www.adafruit.com/products/746 james =============================================== It looks idea, James, but ... with the 15 mm square patch antenna it seems deaf compared to similar devices with 25 mm antennas. Perhaps understandable, but I just bought one and it's been sitting for well over an hour and not yet acquired lock. The device I bought from China, sitting next to it, has been happily locked for that whole period. (As I'm running a test I don't want to unlock the other device). Just a caveat for someone considering using these devices indoors - size matters! 25 mm antenna device: http://www.satsignal.eu/ntp/NEO-6M-under-initial-test.jpg http://www.satsignal.eu/ntp/Raspberry-Pi-NTP.html Cheers, David -- SatSignal Software - Quality software written to your requirements Web: http://www.satsignal.eu Email: david-taylor@blueyonder.co.uk

On 11/15/12 4:30 AM, David J Taylor wrote: > i just used this to with a raspberry pi with good success. > > https://www.adafruit.com/products/746 > > james > =============================================== > > It looks idea, James, but ... with the 15 mm square patch antenna it > seems deaf compared to similar devices with 25 mm antennas. Perhaps > understandable, but I just bought one and it's been sitting for well > over an hour and not yet acquired lock. The device I bought from China, > sitting next to it, has been happily locked for that whole period. (As > I'm running a test I don't want to unlock the other device). Just a > caveat for someone considering using these devices indoors - size matters! > > 25 mm antenna device: > http://www.satsignal.eu/ntp/NEO-6M-under-initial-test.jpg > http://www.satsignal.eu/ntp/Raspberry-Pi-NTP.html > > Cheers, > David ALl good ideas.. but I was looking more for something a bit more packaged.. like a hockey puck with wires coming out.

On Thu, 15 Nov 2012 05:02:54 -0800, Jim Lux <jimlux@earthlink.net> wrote: >On 11/15/12 4:30 AM, David J Taylor wrote: >> i just used this to with a raspberry pi with good success. >> >> https://www.adafruit.com/products/746 >> >> james >> =============================================== >> >> It looks idea, James, but ... with the 15 mm square patch antenna it >> seems deaf compared to similar devices with 25 mm antennas. Perhaps >> understandable, but I just bought one and it's been sitting for well >> over an hour and not yet acquired lock. The device I bought from China, >> sitting next to it, has been happily locked for that whole period. (As >> I'm running a test I don't want to unlock the other device). Just a >> caveat for someone considering using these devices indoors - size matters! >> >> 25 mm antenna device: >> http://www.satsignal.eu/ntp/NEO-6M-under-initial-test.jpg >> http://www.satsignal.eu/ntp/Raspberry-Pi-NTP.html >> >> Cheers, >> David > > >ALl good ideas.. but I was looking more for something a bit more >packaged.. like a hockey puck with wires coming out. I picked up a used Garmin GPS18-5Hz hockey puck to play with and after updating the firmware, have gotten good results with the cable going out a window and the unit sitting on the lower edge of the roof. Its 5 pulse per second output has 60ns of resolution according to the Racal Dana 1992 I repaired implying about a 16.6 MHz timing clock.

On 11/15/12 5:33 AM, David wrote: > On Thu, 15 Nov 2012 05:02:54 -0800, Jim Lux <jimlux@earthlink.net> > wrote: > >> On 11/15/12 4:30 AM, David J Taylor wrote: >>> i just used this to with a raspberry pi with good success. >>> >>> https://www.adafruit.com/products/746 >>> >>> james >>> =============================================== >>> >>> It looks idea, James, but ... with the 15 mm square patch antenna it >>> seems deaf compared to similar devices with 25 mm antennas. Perhaps >>> understandable, but I just bought one and it's been sitting for well >>> over an hour and not yet acquired lock. The device I bought from China, >>> sitting next to it, has been happily locked for that whole period. (As >>> I'm running a test I don't want to unlock the other device). Just a >>> caveat for someone considering using these devices indoors - size matters! >>> >>> 25 mm antenna device: >>> http://www.satsignal.eu/ntp/NEO-6M-under-initial-test.jpg >>> http://www.satsignal.eu/ntp/Raspberry-Pi-NTP.html >>> >>> Cheers, >>> David >> >> >> ALl good ideas.. but I was looking more for something a bit more >> packaged.. like a hockey puck with wires coming out. > > I picked up a used Garmin GPS18-5Hz hockey puck to play with and after > updating the firmware, have gotten good results with the cable going > out a window and the unit sitting on the lower edge of the roof. Its > 5 pulse per second output has 60ns of resolution according to the > Racal Dana 1992 I repaired implying about a 16.6 MHz timing clock. > That's the kind of thing I'm looking for.. or the Synergy TrakPuck ... or one of those pods that came with mapping software 5-10 years ago. I wonder if there's a new version of the GPS18, since I need something that is available off the shelf (and likely to remain so for at least 2-3 years).. Is there a timing output on the GPS16x? (or are the serial messages synchronized in some way)

On Thu, 15 Nov 2012 06:07:28 -0800, Jim Lux <jimlux@earthlink.net> wrote: >On 11/15/12 5:33 AM, David wrote: >> On Thu, 15 Nov 2012 05:02:54 -0800, Jim Lux <jimlux@earthlink.net> >> wrote: >> >>> On 11/15/12 4:30 AM, David J Taylor wrote: >>>> i just used this to with a raspberry pi with good success. >>>> >>>> https://www.adafruit.com/products/746 >>>> >>>> james >>>> =============================================== >>>> >>>> It looks idea, James, but ... with the 15 mm square patch antenna it >>>> seems deaf compared to similar devices with 25 mm antennas. Perhaps >>>> understandable, but I just bought one and it's been sitting for well >>>> over an hour and not yet acquired lock. The device I bought from China, >>>> sitting next to it, has been happily locked for that whole period. (As >>>> I'm running a test I don't want to unlock the other device). Just a >>>> caveat for someone considering using these devices indoors - size matters! >>>> >>>> 25 mm antenna device: >>>> http://www.satsignal.eu/ntp/NEO-6M-under-initial-test.jpg >>>> http://www.satsignal.eu/ntp/Raspberry-Pi-NTP.html >>>> >>>> Cheers, >>>> David >>> >>> >>> ALl good ideas.. but I was looking more for something a bit more >>> packaged.. like a hockey puck with wires coming out. >> >> I picked up a used Garmin GPS18-5Hz hockey puck to play with and after >> updating the firmware, have gotten good results with the cable going >> out a window and the unit sitting on the lower edge of the roof. Its >> 5 pulse per second output has 60ns of resolution according to the >> Racal Dana 1992 I repaired implying about a 16.6 MHz timing clock. >> > >That's the kind of thing I'm looking for.. or the Synergy TrakPuck ... >or one of those pods that came with mapping software 5-10 years ago. >I wonder if there's a new version of the GPS18, since I need something >that is available off the shelf (and likely to remain so for at least >2-3 years).. > >Is there a timing output on the GPS16x? (or are the serial messages >synchronized in some way) So the 16x manual says. As far as I know, all of the Garmin LVC, HVC, and 5Hz versions of their receivers have a timing pulse output. The GPS18 series that I have was replaced by the GPS18x series. Some of their receivers have "TIA-232-F (RS-232) Compatible Polarity" which means exactly that. They do not provide RS-232 voltage levels so for my GPS18-5Hz, I had to hack together a little non-inverting level shifter (two transistors, some resistors, and a dual power supply) to convert the 0 to 5 volts into -12 and +12 volts.

-----Original Message----- From: David [] So the 16x manual says. As far as I know, all of the Garmin LVC, HVC, and 5Hz versions of their receivers have a timing pulse output. The GPS18 series that I have was replaced by the GPS18x series. Some of their receivers have "TIA-232-F (RS-232) Compatible Polarity" which means exactly that. They do not provide RS-232 voltage levels so for my GPS18-5Hz, I had to hack together a little non-inverting level shifter (two transistors, some resistors, and a dual power supply) to convert the 0 to 5 volts into -12 and +12 volts. =================================================== I must have been lucky with my combination of 18, 18x and various PC serial port receivers, as I haven't needed a level shifter with either. But the slightly less than 3V from a different 3.3V GPS does /not/ register on a different serial port. Circuits: http://www.satsignal.eu/ntp/GPS-interface-1.png http://www.satsignal.eu/ntp/GPS-interface-2.png from: http://www.satsignal.eu/ntp/FreeBSD-GPS-PPS.htm -- SatSignal Software - Quality software written to your requirements Web: http://www.satsignal.eu Email: david-taylor@blueyonder.co.uk