I should mention the frequency shown would be a totally cold oscillator as my guess.
On Mon, May 11, 2020 at 8:49 PM paul swed <[email protected]> wrote: > Yes indeed that certainly looks like a an/urr r1051 frequency module. > There should be something like a 20 V in though the model you have is > later then what I have seen. The older r1051 modules had schematics and > could very reasonably be taken apart to get to everything. > They are also reasonable to reverse engineer. Though it does mean > unsoldering various wires and small coaxes. But thats not really that hard > to do. > Good luck > > On Mon, May 11, 2020 at 7:05 PM Glenn Little WB4UIV < > [email protected]> wrote: > >> If I were a betting man, I would put my money on the reference >> oscillator from a R-1051 receiver. >> Accuracy is speced at 1x10^8� per day. >> This is a depot repair item and the best that the manual gives is a very >> detailed block diagram. >> >> 73 >> Glenn >> WB4UIV >> >> On 5/11/2020 9:30 AM, Gordon Batey wrote: >> > Greetings, >> > >> > Thanks for the comments. >> > >> > Attached ate some pictures of this unit. >> > >> > I have not looked inside (yet) The other outputs >> > appear to have been directly related to the 10 MHZ value. >> > >> > I have NOT attempted to adjust anything yet. It has been on >> > about 6 days mot and reand 10000209.91 down from 10000367.00 >> > when first turned on. The two red wires come from separate 3 >> > terminal ?? voltage regulators. So perhaps the oven is open? >> > >> > 73 Gordon WA4FJC >> > ---------------------------------------------------------------------- >> > >> > Message: 1 >> > Date: Tue, 5 May 2020 12:21:12 -0500 >> > From: Dana Whitlow <mailto:[email protected]> < >> [email protected]> >> > To: Discussion of precise time and frequency measurement >> > <mailto:[email protected]> <[email protected]> >> > Subject: Re: [time-nuts] Model # FE2040B >> > Message-ID: >> > >> > <mailto: >> cadhrwpc3ja2o3eethz5qjowtpp07tte7vc7ynovmfwnadqa...@mail.gmail.com> >> > <cadhrwpc3ja2o3eethz5qjowtpp07tte7vc7ynovmfwnadqa...@mail.gmail.com> >> > Content-Type: text/plain; charset="UTF-8" >> > >> > Gordon, >> > >> > Out of curiosity, what variety of standard is it? >> > >> > Dana >> > >> > >> > On Tue, May 5, 2020 at 10:18 AM Gordon Batey <mailto: >> [email protected]> >> > <[email protected]> wrote: >> > >> > >> > Greeting to the timekeepers, >> > >> > I have just acquired a Frequency Electronics FE2040B Frequency Standard. >> > It has been off for a long time. It is mounted on a small chassis >> > with a power supply And BNC connectors. Has outputs labeled 10 Mhz. 5 >> > Mhz, 1 Mhz and 500Khz. >> > One BNC is labeled 5 Mhz IN. It is operational and the 10 Mhz is high >> > but coming down. >> > It has SMA connectors with short cables going to the BNC outputs. >> > Some SMA connectors are not connected. >> > It has been on for about 12 hours now and does not seem to have an oven. >> > >> > I am seeking a manual or schematic for this unit. >> > >> > Any thoughts appreciated. >> > >> > 73 Gordon WA4FJC >> > [email protected] <mailto:[email protected]> >> > >> > >> > >> > _______________________________________________ >> > time-nuts mailing list -- [email protected] >> > <mailto:[email protected]> To unsubscribe, go >> > to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com >> > and follow the instructions there. >> > >> > >> > >> > >> > ------------------------------ >> > >> > Message: 2 >> > Date: Tue, 5 May 2020 22:00:04 +0000 (UTC) >> > From: [email protected] <mailto:[email protected]> >> > To: <mailto:[email protected]> "[email protected]" >> > <mailto:[email protected]> <[email protected]> >> > Subject: Re: [time-nuts] Model # FE2040B >> > Message-ID: <mailto:[email protected]> >> > <[email protected]> >> > Content-Type: text/plain; charset=UTF-8 >> > >> > Just a thought, and it is just a thought never having come across one of >> > these before.... >> > >> > >> > >> > If it doesn't seem to have an oven, does it seem to have any obvious >> > enclosed oscillator module? >> > >> > >> > >> > If it's "only" the 10MHz is high, I'm making an assumption here, is it >> > possible that the 5MHz input is used to condition a 10MHz oscillator >> > >> > that's taking time to settle, whilst the other outputs are taken either >> > directly from the 5MHz input or divided down from it? >> > >> > >> > >> > Nigel GM8PZR >> > >> > >> > >> > Greeting to the timekeepers, >> > >> > I have just acquired a Frequency Electronics FE2040B Frequency Standard. >> > It has been off for a long time. It is mounted on a small chassis with >> a >> > power supply >> > And BNC connectors. Has outputs labeled 10 Mhz. 5 Mhz, 1 Mhz and >> 500Khz. >> > One BNC is labeled 5 Mhz IN. It is operational and the 10 Mhz is high >> but >> > coming down. >> > It has SMA connectors with short cables going to the BNC outputs. Some >> > SMA connectors are not connected. >> > It has been on for about 12 hours now and does not seem to have an oven. >> > >> > I am seeking a manual or schematic for this unit. >> > >> > Any thoughts appreciated. >> > >> > 73 Gordon WA4FJC >> > gpbatey at wildblue.net >> > >> > ------------------------------ >> > >> > >> > >> > >> > _______________________________________________ >> > time-nuts mailing list -- [email protected] >> > To unsubscribe, go to >> http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com >> > and follow the instructions there. >> >> -- >> ----------------------------------------------------------------------- >> Glenn Little ARRL Technical Specialist QCWA LM 28417 >> Amateur Callsign: WB4UIV [email protected] AMSAT LM 2178 >> QTH: Goose Creek, SC USA (EM92xx) USSVI LM NRA LM SBE ARRL TAPR >> "It is not the class of license that the Amateur holds but the class >> of the Amateur that holds the license" >> >> _______________________________________________ >> time-nuts mailing list -- [email protected] >> To unsubscribe, go to >> http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com >> and follow the instructions there. >> > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
