OK GPStat is yet some version of GPStar from odetics. On Fri, Jun 5, 2020 at 10:41 AM Steve - Home <steve-kr...@cox.net> wrote:
> I just proved my memory isn’t what it used to be. My unit is a GPStat > Frequency Measurement System, Model 345-200. Not a GPStar as I thought. I > just dug it out and the label on the bottom says input +5, +12V 3W. I’ll > dig into it later as I have another dig to do - 35’ trench 6” wide, 18” > deep for power to a utility building. > > Steve > > > > > > On Jun 5, 2020, at 9:10 AM, paul swed <paulsw...@gmail.com> wrote: > > > > Steve and yet another GPStar. > > My units are older and just GPStar by Odetics and use ocxo. > > These old units actually had external down converters that are quite > > complicated but nicely done. > > The din plug was +5 and +12. 2 pins for each plus grounds. > > Yours may be different if newer. But as you guessed really easy to figure > > out. > > Regards > > Paul > > WB8TSL > > > >> On Fri, Jun 5, 2020 at 10:03 AM Steve - Home <steve-kr...@cox.net> > wrote: > >> > >> I have a GPStar that hadn’t been used in a few years. I’ve misplaced the > >> wall wart power supply. Could someone pass along the output voltage and > >> current numbers of the wall wart, please? I think I can figure out the > DIN > >> connector pin numbers but that would be helpful, too. My manual is > pretty > >> sparse in that area. If I recall it says “plug in the AC adapter”... > >> > >> Thanks! > >> > >> Steve K. > >> WB0DBS > >> > >> > >> > >>>> On Jun 4, 2020, at 10:00 PM, paul swed <paulsw...@gmail.com> wrote: > >>> > >>> Somebody else actually has a GPStar (Odetics) and working? > >>> My units stopped working about 4 months ago. They are circa 1994 as I > >>> recall. Had 2 neither would work. Have one now as I used the case and > >> rack > >>> mounts for another project. > >>> These are much older then what you have as the GPS receiver is actually > >>> discreet components. > >>> Regards > >>> Paul > >>> WB8TSL > >>> > >>>> On Thu, Jun 4, 2020 at 8:59 PM Bruce Lane <kyr...@bluefeathertech.com > > > >>>> wrote: > >>>> > >>>> After many moons, my trusty GPStar 365 (updated to a 565 through > >>>> firmware and a receiver change) finally bit the dust. Symptom: It kept > >>>> flipping between 'Coasting' and 'Recovering,' never quite reaching > >>>> 'Locked.' The DAC value either ended up maxed (65534) or min'd > (00000). > >>>> > >>>> Contacted Tim Gavin at Zyfer-FEI for advice. Strongest > >> possibility: > >>>> OCXO went south. Tried manually setting the DAC for mid-point (32768) > >>>> and manually tweaking the coarse tuning on said OCXO against a > >>>> known-good 10MHz source of equal precision (translation: Another > GPSDO). > >>>> > >>>> Didn't work. Tried replacing the OCXO itself, and doing the > >>>> alignment > >>>> trick. Still no joy. > >>>> > >>>> Considering the lack of schematics: Emit large sigh, put unit > >>>> aside, > >>>> start searching Ebay for replacement. > >>>> > >>>> Found a late-model (black case) 565-310 for a reasonable price, > >>>> bought > >>>> it. Arrived a week later (yesterday at work). Opened it up, delighted > to > >>>> find I got a better deal than I thought in that the thing's got a > >>>> rubidium module (FE-5650A to be exact). > >>>> > >>>> Did initial power-up/burn-in test with a local GPS antenna; Unit > >>>> went > >>>> to TFOM 4 and 'Locked' within a half-hour and stayed that way all day, > >>>> DAC number just slightly above mid-point. > >>>> > >>>> However -- Date way off due to outdated Motorola UT+ receiver > >>>> module. > >>>> Replaced said UT+ with the M12M drop-in module from Synergy GPS. Fired > >>>> up -- and got NO satellite tracking ID's! > >>>> > >>>> Mutter something vulgar. Do more poking around. Suddenly realize > >>>> the > >>>> firmware in the replacement 565 is at 1.06, while my original unit was > >>>> at 1.08. "I wonder if..." > >>>> > >>>> Swap 1.08 firmware chip into replacement 565. Power on. Goes > >>>> through > >>>> factory reset -- and comes up perfectly normal! Sat numbers appearing > on > >>>> tracking report. Just checked it a moment ago (about 15 minutes after > >>>> initial re-power) and it's at TFOM 4 / Locked! And it stayed that way > >>>> through a 24-hour burn-in check. > >>>> > >>>> Conclusion: In the 565 series, you need version 1.08 firmware to > >>>> support Motorola's M12, or similar replacements. > >>>> > >>>> And I'm still amazed I lucked out with the rubidium module. ;-) > >>>> > >>>> Keep on tickin'... > >>>> > >>>> -- > >>>> --- > >>>> Bruce Lane, ARS KC7GR > >>>> http://www.bluefeathertech.com > >>>> kyrrin (at) bluefeathertech dot com > >>>> "Quando Omni Flunkus Moritati" (Red Green) > >>>> > >>>> _______________________________________________ > >>>> time-nuts mailing list -- time-nuts@lists.febo.com > >>>> To unsubscribe, go to > >>>> http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > >>>> and follow the instructions there. > >>>> > >>> _______________________________________________ > >>> time-nuts mailing list -- time-nuts@lists.febo.com > >>> To unsubscribe, go to > >> http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > >>> and follow the instructions there. > >> > >> > >> _______________________________________________ > >> time-nuts mailing list -- time-nuts@lists.febo.com > >> To unsubscribe, go to > >> http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > >> and follow the instructions there. > >> > > _______________________________________________ > > time-nuts mailing list -- time-nuts@lists.febo.com > > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > > and follow the instructions there. > > > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.