Re: [time-nuts] military frequency standard pin out??
Hi The range of suppliers and age of the units makes them a bit of a gamble. Of course buying any used OCXO is a bit of a gamble. Bob -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Bill Riches Sent: Wednesday, March 07, 2012 4:49 PM To: 'Discussion of precise time and frequency measurement' Subject: Re: [time-nuts] military frequency standard pin out?? They were dogs though - I worked on mine for repairing 1051 rx - seemed failure rate was more than 50 % - took 2 or three to make a good unit! But when you made one work they were quite accurate considering their age. 73, Bill, WA2DVU Hi Bob, Yes.. that is what I am trying to find out. But I don't want to chance it till I know for sure what the power requirements are. Thanks for the heads up though, I did not realize the bad rep these had. ___ 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.
Re: [time-nuts] military frequency standard pin out??
They were dogs though - I worked on mine for repairing 1051 rx - seemed failure rate was more than 50 % - took 2 or three to make a good unit! But when you made one work they were quite accurate considering their age. 73, Bill, WA2DVU Hi Bob, Yes.. that is what I am trying to find out. But I don't want to chance it till I know for sure what the power requirements are. Thanks for the heads up though, I did not realize the bad rep these had. ___ 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.
Re: [time-nuts] military frequency standard pin out??
I used to rebuild these units many years ago and they were quite a good oscillator - these units would be good for a few parts in 10-9 and 10-8. 73, Bill, WA2DVU > >Paul A. Cianciolo paulc at snet.net >"The cover has the layout of the parts. The connector has 6 coax >outputs into a D type connector." > >+ >It sounds like the R-1051/URR receiver frequency standard. There is >some info on >repairing it here: >http://www.jamminpower.com/PDF/Navships%200967-034-2000.pdf Yes, it is. For a picture look here: http://www.jamminpower.com/main/r1051.html Should you be unable to download the manuals, I could send you at least the schematic diagram and component location of the Freq. Std. I have one of these oscillators, and years ago I used 18VDC for testing. It is rated at 10E-8 per day, and has 5MHz, 1MHz and 10 MHz plus 2x500KHz outputs. As you may have seen, it was used on a radio. Antonio I8IOV ___ 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.
Re: [time-nuts] military frequency standard pin out??
Hi Bob, Yes.. that is what I am trying to find out. But I dont want to chance it till I know for sure what the power requirements are. Thanks for the heads up though, I did not realize the bad rep these had. Paul A. Cianciolo W1VLF http://www.rescueelectronics.com/ Our business computer network is powered exclusively by solar and wind power. Converting Photons to Electrons for over 20 years -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Bob Camp Sent: Wednesday, March 07, 2012 12:51 PM To: 'Arthur Dent'; 'Discussion of precise time and frequency measurement' Subject: Re: [time-nuts] military frequency standard pin out?? Hi The gotcha here is that "frequency standard" is a relative term. For what ever reason, these were a high failure item in the R-1051. People talk about seeing large piles of them at repair depots. The replacement contracts often went to outfits that had little experience in the OCXO business. Even a "good" part may not be what a time nut would call a frequency standard. Bob -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Arthur Dent Sent: Wednesday, March 07, 2012 11:35 AM To: time-nuts@febo.com Subject: [time-nuts] military frequency standard pin out?? Paul A. Cianciolo paulc at snet.net "The cover has the layout of the parts. The connector has 6 coax outputs into a D type connector." + It sounds like the R-1051/URR receiver frequency standard. There is some info on repairing it here: http://www.jamminpower.com/PDF/Navships%200967-034-2000.pdf ___ 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.
Re: [time-nuts] military frequency standard pin out??
6625-078-4718 - * Frequency Standard Module from R-1051* and RT-618* radios; usable as replacement or adapt to other need where standard is required. Crystal oven with 5 MHz crystal provides 5 MHz sine wave output (approx 1.8V) plus possible non-sine outputs dual 500KHz, 1 & 10 MHz. Designed stability: 1 part in 10 / day. Requires 18-24VDC input. 4.4x3x4.5, 2 lbs sh. Used crystal only is checked, other output may need repair, with schematic, Found on Fair Radio's site .. -pete On Wed, Mar 7, 2012 at 7:45 AM, Paul A. Cianciolo wrote: > Hello Folks, > > > > I found in my collection a frequency standard that I acquired mil surplus at > one time. > > The model number of 2N6625-078-4718 internet search yields nothing on this > number. > > The unit is a common looking one , approx. 4" x 3" x 4" with an aluminum > cover that comes off. > > The cover has the layout of the parts. The connector has 6 coax outputs > into a D type connector. > > It appears 3 pins for power 1 is ground that easy to see but the others are > > 2) a red white and black that leads to the circuit board > > 3) and a brown white and black also leads to the circuit board. > > > > I would like to fire this up, but not burn it up. > > > > > > Any ideas? > > > > Thank you > > > > > > Paul A. Cianciolo > > W1VLF > > http://www.rescueelectronics.com/ > > Our business computer network is powered exclusively by solar and wind > power. > > Converting Photons to Electrons for over 20 years > > > > ___ > 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.
Re: [time-nuts] military frequency standard pin out??
Good Morning Paul, Sounds like a very old military unit. Probably 60's vintage. before the 13 digit NSNs. national stock number (NSN) is probably 6625-078-4718. I do not recall what the 2N could mean. a modern NSN would look like 6625-00-078-4718 or 6625-01-078-4718 Stan, W1LE on Cape Cod On 3/7/2012 10:45 AM, Paul A. Cianciolo wrote: Hello Folks, I found in my collection a frequency standard that I acquired mil surplus at one time. The model number of 2N6625-078-4718 internet search yields nothing on this number. The unit is a common looking one , approx. 4" x 3" x 4" with an aluminum cover that comes off. The cover has the layout of the parts. The connector has 6 coax outputs into a D type connector. It appears 3 pins for power 1 is ground that easy to see but the others are 2) a red white and black that leads to the circuit board 3) and a brown white and black also leads to the circuit board. I would like to fire this up, but not burn it up. Any ideas? Thank you Paul A. Cianciolo W1VLF http://www.rescueelectronics.com/ Our business computer network is powered exclusively by solar and wind power. Converting Photons to Electrons for over 20 years ___ 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.
Re: [time-nuts] military frequency standard pin out??
Hi The gotcha here is that "frequency standard" is a relative term. For what ever reason, these were a high failure item in the R-1051. People talk about seeing large piles of them at repair depots. The replacement contracts often went to outfits that had little experience in the OCXO business. Even a "good" part may not be what a time nut would call a frequency standard. Bob -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Arthur Dent Sent: Wednesday, March 07, 2012 11:35 AM To: time-nuts@febo.com Subject: [time-nuts] military frequency standard pin out?? Paul A. Cianciolo paulc at snet.net "The cover has the layout of the parts. The connector has 6 coax outputs into a D type connector." + It sounds like the R-1051/URR receiver frequency standard. There is some info on repairing it here: http://www.jamminpower.com/PDF/Navships%200967-034-2000.pdf ___ 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.
Re: [time-nuts] military frequency standard pin out??
>Ogg: [time-nuts] military frequency standard pin out?? > >Paul A. Cianciolo paulc at snet.net >"The cover has the layout of the parts. The connector has 6 coax outputs >into a D type connector." > >+ >It sounds like the R-1051/URR receiver frequency standard. There is some info on >repairing it here: >http://www.jamminpower.com/PDF/Navships%200967-034-2000.pdf Yes, it is. For a picture look here: http://www.jamminpower.com/main/r1051.html Should you be unable to download the manuals, I could send you at least the schematic diagram and component location of the Freq. Std. I have one of these oscillators, and years ago I used 18VDC for testing. It is rated at 10E-8 per day, and has 5MHz, 1MHz and 10 MHz plus 2x500KHz outputs. As you may have seen, it was used on a radio. Antonio I8IOV ___ 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] military frequency standard pin out??
Paul A. Cianciolo paulc at snet.net "The cover has the layout of the parts. The connector has 6 coax outputs into a D type connector." + It sounds like the R-1051/URR receiver frequency standard. There is some info on repairing it here: http://www.jamminpower.com/PDF/Navships%200967-034-2000.pdf ___ 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.
Re: [time-nuts] military frequency standard pin out??
> The model number of 2N6625-078-4718 internet search yields nothing on this > number. Remove the 2N from the gaggle and you'll have a standard number sequence that Google has some info for you. RP ..._._ ___ 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] military frequency standard pin out??
Hello Folks, I found in my collection a frequency standard that I acquired mil surplus at one time. The model number of 2N6625-078-4718 internet search yields nothing on this number. The unit is a common looking one , approx. 4" x 3" x 4" with an aluminum cover that comes off. The cover has the layout of the parts. The connector has 6 coax outputs into a D type connector. It appears 3 pins for power 1 is ground that easy to see but the others are 2) a red white and black that leads to the circuit board 3) and a brown white and black also leads to the circuit board. I would like to fire this up, but not burn it up. Any ideas? Thank you Paul A. Cianciolo W1VLF http://www.rescueelectronics.com/ Our business computer network is powered exclusively by solar and wind power. Converting Photons to Electrons for over 20 years ___ 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.
