Yes that is correct. I have one of the units made by James Miller G3RUH. I had hoped to build some something along these lines on my own, but the Jupiter gps modules I acquired didn't actually have a 10 kHz output. Also my comment re the adev is for the 10 MHz output. I've never looked at the one pps output.
Sent from my iPad On 2011-12-29, at 8:45 PM, "Richard W. Solomon" <w1...@earthlink.net> wrote: > I think you are talking about the G3RUH/N1JEZ design. I have built three of > them > and they work very well. > > 73 es HNY, Dick, W1KSZ > > > -----Original Message----- >> From: Mark Spencer <mspencer12...@yahoo.ca> >> Sent: Dec 29, 2011 9:24 PM >> To: Discussion of precise time and frequency measurement <time-nuts@febo.com> >> Subject: Re: [time-nuts] Thunderbolt? (re simple gpsdo.) >> >> One of the designs using the 10 kHz output from a Jupiter gps engine and a >> simple PLL to discipline an ocxo might be good starting point if suitable >> gps engines are still available. There won't be much to tweak but the >> performance could be quite good. >> >> My first gpsdo was a manufactured version of this concept and it >> consistently beats my thunder bolt from an adev perspective and there is >> nothing to tweak (: >> >> >> >> Sent from my iPad >> >> On 2011-12-29, at 6:35 PM, Chris Albertson <albertson.ch...@gmail.com> wrote: >> >>>> The era of cheap Thunderbolts appears to be history. >>>> >>> >>> What is the simplest GPSDO you can build? There are many designs >>> around but when the T-Bolts came out I think people lost interesting >>> building. >>> >>> I think something very simple could work. If your local oscillator is >>> at all decent it will not loose or gain full cycle in one second. So >>> I think you only need to compare the phase of the oscillator and the >>> PPS. Would an analog controller work? I do software all day every >>> day at work so it would be fun to build an analog computer for a >>> change. >>> >>> >>> Chris Albertson >>> Redondo Beach, California >>> >>> _______________________________________________ >>> 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. >> >> _______________________________________________ >> 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. > > > _______________________________________________ > 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. _______________________________________________ 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.
