Has any one run tests of the OCXO inside the AN/URQ-23. Data in the manual looks promising. Question if it is frequency or ADEV Bert Kehren

Bert wrote: > Has any one run tests of the OCXO inside the AN/URQ-23. I've played with several of the pulled oscillators. They're nothing special -- xDEV at most frequencies for the ones I've seen is around 5-20x worse than an HP 10811. I tested them after they had been running for 2-3 weeks -- I've never taken the time to let one settle for months or years -- so some long-term improvement may be possible. But I doubt that the ones I've seen would ever equal a 10811. Best regards, Charles

Bert, In the early days of time-nuts the URQ-10, and especially the URQ-23, were highly sought after because of their reported stability. By now they are quite rare. Do you have one? If it's important I can dig one out from the closet and run tests for you. > "Question if it is frequency or ADEV". I'm not sure what you mean. There is no such thing as "frequency" vs. "ADEV". /tvb ----- Original Message ----- From: "Bert Kehren via time-nuts" <time-nuts@febo.com> To: <time-nuts@febo.com> Sent: Tuesday, July 25, 2017 7:48 AM Subject: [time-nuts] OCXO inside the FEI AN/URQ-23 > Has any one run tests of the OCXO inside the AN/URQ-23. Data in the manual > looks promising. Question if it is frequency or ADEV > Bert Kehren

Hello to the group. I think I have a beta AN URQ-23. Flea market special. Its oscillator never behaved correctly. (Most likely why it was at the Flea) I had no real details then and its a bit of a boat anchor. Its been a while and I think I hacked around in it without any real success. Regards Paul WB8TSL On Tue, Jul 25, 2017 at 11:37 AM, Tom Van Baak <tvb@leapsecond.com> wrote: > Bert, > > In the early days of time-nuts the URQ-10, and especially the URQ-23, were > highly sought after because of their reported stability. By now they are > quite rare. Do you have one? > > If it's important I can dig one out from the closet and run tests for you. > > > "Question if it is frequency or ADEV". > > I'm not sure what you mean. There is no such thing as "frequency" vs. > "ADEV". > > /tvb > > ----- Original Message ----- > From: "Bert Kehren via time-nuts" <time-nuts@febo.com> > To: <time-nuts@febo.com> > Sent: Tuesday, July 25, 2017 7:48 AM > Subject: [time-nuts] OCXO inside the FEI AN/URQ-23 > > > > Has any one run tests of the OCXO inside the AN/URQ-23. Data in the > manual > > looks promising. Question if it is frequency or ADEV > > Bert Kehren > > > _______________________________________________ > 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 have measured the Phase noise: freq dBc/Hz 1Hz -115 10Hz -135 100Hz -148 1kHz -160 10kHz -167 100kHz -171 Luciano www.timeok.it Da "time-nuts" time-nuts-bounces@febo.com A time-nuts@febo.com Cc Data Tue, 25 Jul 2017 10:48:24 -0400 Oggetto [time-nuts] OCXO inside the FEI AN/URQ-23 Has any one run tests of the OCXO inside the AN/URQ-23. Data in the manual looks promising. Question if it is frequency or ADEV Bert Kehren _______________________________________________ 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.