[time-nuts] Re: OCXO McCoy Electronics OSC92-51B
It was used in the HP 8566B Spectrum Analyzer for a while at least. So whatever the 8566B specified for its OCXO would be a minimum. I have a dead* one here from my 8566B. The pins are wired to a connector with the following colors: 1,2) Black 3) Red 4) Purple 5) Orange 6) Black No EFC to my knowledge. From the 8566B service manual, and assuming that the wire numbering matches the color codes, then: Red: +20V switched, i.e. osc power supply. Black: Ground. Purple: HOVC i.e high oven cold (where high is 20V or so). Orange: +22V oven supply. The Corning branded version of the OSC92-51B is still available NOS. I put one in my 8566B. I got a few spares too. Ignore the ridiculous ebay prices if you want one and try Quest components who may still have a few (though you'll pay their line item minimum if you only want one). * It was > 70 Hz out and could not be adjusted into spec. On Tue, Apr 13, 2021 at 3:58 PM Bob kb8tq wrote: > Hi > > Since this is a part that Ovenaire made for HP, probably the best way to > work out what’s what is to find the equipment that it went into. Best guess > is that would be an item that shows up in the 1985 ~ 2005 HP catalogs. > > ( = OSC92 is an Ovenaire part number that was carried on after McCoy > folded Ovenaire into the “empire”). That makes it a > 25 year old spec. > > Rough guess at the specs: > > 5x10^-8 over 0 to 70C > -150 dbc/Hz at 10 KHz offset > 10 dbm +/- 3 db > 10W power at turn on. > > With the fine adjust it may or may not have an EFC. There are enough pins > for > it to have one. > > Pinout looking at it with the SMA “up” and numbering from left to right: > > 1) V- / return / ground > 2) Case > 3) B+ > 4) ??? > 5) ??? > 6) ground > > Bob > > > On Apr 13, 2021, at 3:17 PM, Juerg Koegel wrote: > > > > I am looking for data (PinOut, Power, Stability, Phase Noise, EFC ) for > the 10MHz OCXO McCoy Electronics OSC92-51B. > > Thanks for all information. > > > > Juerg > > ___ > > time-nuts mailing list -- time-nuts@lists.febo.com -- To unsubscribe > send an email to time-nuts-le...@lists.febo.com > > To unsubscribe, go to and follow the instructions there. > ___ > time-nuts mailing list -- time-nuts@lists.febo.com -- To unsubscribe send > an email to time-nuts-le...@lists.febo.com > To unsubscribe, go to and follow the instructions there. ___ time-nuts mailing list -- time-nuts@lists.febo.com -- To unsubscribe send an email to time-nuts-le...@lists.febo.com To unsubscribe, go to and follow the instructions there.
[time-nuts] Re: OCXO McCoy Electronics OSC92-51B
On a hunch, I searched for the other part number on the nameplate (0960-0477) in one of the military stock reseller's database and found that the only end item that this oscillator was used in was the AN/FPS-115 PAVE PAWS (Precision Acquisition Vehicle Entry - Phased Array Warning System) radar system, developed in the 1980s for the US Navy. I searched for any technical information on this system and came up empty. Maybe someone else can do better than I did. The national stock number for the oscillator is 5955-01-086-8122, and is described as a NON-CRYSTAL Controlled oscillator!! Good luck in your search, DaveM From: "Bob kb8tq" To: "Discussion of precise time and frequency measurement" Sent: Tuesday, April 13, 2021 5:58:15 PM Subject: [time-nuts] Re: OCXO McCoy Electronics OSC92-51B Hi Since this is a part that Ovenaire made for HP, probably the best way to work out what’s what is to find the equipment that it went into. Best guess is that would be an item that shows up in the 1985 ~ 2005 HP catalogs. ( = OSC92 is an Ovenaire part number that was carried on after McCoy folded Ovenaire into the “empire”). That makes it a > 25 year old spec. Rough guess at the specs: 5x10^-8 over 0 to 70C -150 dbc/Hz at 10 KHz offset 10 dbm +/- 3 db 10W power at turn on. With the fine adjust it may or may not have an EFC. There are enough pins for it to have one. Pinout looking at it with the SMA “up” and numbering from left to right: 1) V- / return / ground 2) Case 3) B+ 4) ??? 5) ??? 6) ground Bob > On Apr 13, 2021, at 3:17 PM, Juerg Koegel wrote: > > I am looking for data (PinOut, Power, Stability, Phase Noise, EFC ) for the > 10MHz OCXO McCoy Electronics OSC92-51B. > Thanks for all information. > > Juerg > ___ > time-nuts mailing list -- time-nuts@lists.febo.com -- To unsubscribe send an > email to time-nuts-le...@lists.febo.com > To unsubscribe, go to and follow the instructions there. ___ time-nuts mailing list -- time-nuts@lists.febo.com -- To unsubscribe send an email to time-nuts-le...@lists.febo.com To unsubscribe, go to and follow the instructions there. ___ time-nuts mailing list -- time-nuts@lists.febo.com -- To unsubscribe send an email to time-nuts-le...@lists.febo.com To unsubscribe, go to and follow the instructions there.
[time-nuts] Re: OCXO McCoy Electronics OSC92-51B
Hi Since this is a part that Ovenaire made for HP, probably the best way to work out what’s what is to find the equipment that it went into. Best guess is that would be an item that shows up in the 1985 ~ 2005 HP catalogs. ( = OSC92 is an Ovenaire part number that was carried on after McCoy folded Ovenaire into the “empire”). That makes it a > 25 year old spec. Rough guess at the specs: 5x10^-8 over 0 to 70C -150 dbc/Hz at 10 KHz offset 10 dbm +/- 3 db 10W power at turn on. With the fine adjust it may or may not have an EFC. There are enough pins for it to have one. Pinout looking at it with the SMA “up” and numbering from left to right: 1) V- / return / ground 2) Case 3) B+ 4) ??? 5) ??? 6) ground Bob > On Apr 13, 2021, at 3:17 PM, Juerg Koegel wrote: > > I am looking for data (PinOut, Power, Stability, Phase Noise, EFC ) for the > 10MHz OCXO McCoy Electronics OSC92-51B. > Thanks for all information. > > Juerg > ___ > time-nuts mailing list -- time-nuts@lists.febo.com -- To unsubscribe send an > email to time-nuts-le...@lists.febo.com > To unsubscribe, go to and follow the instructions there. ___ time-nuts mailing list -- time-nuts@lists.febo.com -- To unsubscribe send an email to time-nuts-le...@lists.febo.com To unsubscribe, go to and follow the instructions there.
