Last week I bought a tinyPFA (does that count as a light frequency-nut infection?). The first measurements with TimeLab have been made (more on that later). As it goes, I am obviously experimenting (and scratching my head..) a lot right now. Next plan is to measure my Efratom FRK-HLN 5 MHz unit against a brand new 5 MHz Tele Quarz Group oscillator I acquired at a ham fest. Only problem: no data on pinout or specs that I could find on the net. Maybe someone on this list can help me? 73 Wilko PA1WBU

Hi If the 40.92 on the label is talking about the 40th week of 1992, that would make this a > 30 year old part. That’s well before folks started putting specs and catalogs up on the internet …. It’s also pretty far back in the whole: Tele Quartz => Oak => Corning => Vectron => Microsemi => Microchip progression. A picture of the package might help folks come up with something that could help ( = a lot of these packages had common pinouts ….). Bob > On Dec 10, 2023, at 12:51 PM, Wilko Bulte via time-nuts <time-nuts@lists.febo.com> wrote: > > Last week I bought a tinyPFA (does that count as a light frequency-nut infection?). The first measurements with TimeLab have been made (more on that later). As it goes, I am obviously experimenting (and scratching my head..) a lot right now. > > Next plan is to measure my Efratom FRK-HLN 5 MHz unit against a brand new 5 MHz Tele Quarz Group oscillator I acquired at a ham fest. > > Only problem: no data on pinout or specs that I could find on the net. Maybe someone on this list can help me? > > 73 Wilko > PA1WBU > > > > <image1.jpeg> > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe send an email to time-nuts-leave@lists.febo.com

hi Bob, Thank you. It is ancient but appears to be NOS at the same time. So maybe interesting to study its aging (?). That said: below 2 pictures with a cm ruler for scale purposes. Wilko > On 11 Dec 2023, at 03:36, Bob kb8tq <kb8tq@n1k.org> wrote: > > Hi > > If the 40.92 on the label is talking about the 40th week of 1992, that would make this a > 30 year old part. That’s well before folks started putting specs and catalogs up on the internet …. It’s also pretty far back in the whole: Tele Quartz => Oak => Corning => Vectron => Microsemi => Microchip progression. > > A picture of the package might help folks come up with something that could help ( = a lot of these packages had common pinouts ….). > > Bob > >> On Dec 10, 2023, at 12:51 PM, Wilko Bulte via time-nuts <time-nuts@lists.febo.com> wrote: >> >> Last week I bought a tinyPFA (does that count as a light frequency-nut infection?). The first measurements with TimeLab have been made (more on that later). As it goes, I am obviously experimenting (and scratching my head..) a lot right now. >> >> Next plan is to measure my Efratom FRK-HLN 5 MHz unit against a brand new 5 MHz Tele Quarz Group oscillator I acquired at a ham fest. >> >> Only problem: no data on pinout or specs that I could find on the net. Maybe someone on this list can help me? >> >> 73 Wilko >> PA1WBU >> >> >> >> <image1.jpeg> >> _______________________________________________ >> time-nuts mailing list -- time-nuts@lists.febo.com >> To unsubscribe send an email to time-nuts-leave@lists.febo.com >

Hi Ok, it’s pretty obvious that one of the 5 pins is hooked to the case. Typically that means it is the ground / supply return pin. On the most common pinout these days for that same package, the ground is in a different location. One of many examples of this pinout: https://www.morion-us.com/catalog_pdf/mv89.pdf As shown, all 5 pins have a specific function. With no Vref there might be a ground pin at the Vref location. If there is another pin doing the “return” function, that should be pretty obvious with an ohmmeter test. This is pretty unlikely. Supply wise, best guess is 12V, 24V would come in second. A distant third would be “something between 10 and 28V”. Bob > On Dec 11, 2023, at 5:29 AM, Wilko Bulte <wkb@xs4all.nl> wrote: > > hi Bob, > > Thank you. It is ancient but appears to be NOS at the same time. So maybe interesting to study its aging (?). > > That said: below 2 pictures with a cm ruler for scale purposes. > > <image0.jpeg> > > <image1.jpeg> > > Wilko > >> On 11 Dec 2023, at 03:36, Bob kb8tq <kb8tq@n1k.org> wrote: >> >> Hi >> >> If the 40.92 on the label is talking about the 40th week of 1992, that would make this a > 30 year old part. That’s well before folks started putting specs and catalogs up on the internet …. It’s also pretty far back in the whole: Tele Quartz => Oak => Corning => Vectron => Microsemi => Microchip progression. >> >> A picture of the package might help folks come up with something that could help ( = a lot of these packages had common pinouts ….). >> >> Bob >> >>> On Dec 10, 2023, at 12:51 PM, Wilko Bulte via time-nuts <time-nuts@lists.febo.com> wrote: >>> >>> Last week I bought a tinyPFA (does that count as a light frequency-nut infection?). The first measurements with TimeLab have been made (more on that later). As it goes, I am obviously experimenting (and scratching my head..) a lot right now. >>> >>> Next plan is to measure my Efratom FRK-HLN 5 MHz unit against a brand new 5 MHz Tele Quarz Group oscillator I acquired at a ham fest. >>> >>> Only problem: no data on pinout or specs that I could find on the net. Maybe someone on this list can help me? >>> >>> 73 Wilko >>> PA1WBU >>> >>> >>> >>> <image1.jpeg> >>> _______________________________________________ >>> time-nuts mailing list -- time-nuts@lists.febo.com >>> To unsubscribe send an email to time-nuts-leave@lists.febo.com >>

"Who dares wins". Armed with a current-limited lab supply I arrived at the pinout pictured below. Uref ~= 7.87 V, Usup = 12V. Isup ~= 0.5 A during warmup. Steady state Isup ~= 0.2 A. Output is sinewave. Sent to the list for the benefit of Google e.a. thanks! Wilko > On 11 Dec 2023, at 17:21, Bob kb8tq <kb8tq@n1k.org> wrote: > > Hi > > Ok, it’s pretty obvious that one of the 5 pins is hooked to the case. Typically that means it is the ground / supply return pin. On the most common pinout these days for that same package, the ground is in a different location. One of many examples of this pinout: > > https://www.morion-us.com/catalog_pdf/mv89.pdf > > As shown, all 5 pins have a specific function. > > With no Vref there might be a ground pin at the Vref location. If there is another pin doing the “return” function, that should be pretty obvious with an ohmmeter test. This is pretty unlikely. > > Supply wise, best guess is 12V, 24V would come in second. A distant third would be “something between 10 and 28V”. > > Bob > >> On Dec 11, 2023, at 5:29 AM, Wilko Bulte <wkb@xs4all.nl> wrote: >> >> hi Bob, >> >> Thank you. It is ancient but appears to be NOS at the same time. So maybe interesting to study its aging (?). >> >> That said: below 2 pictures with a cm ruler for scale purposes. >> >> <image0.jpeg> >> >> <image1.jpeg> >> >> Wilko >> >>> On 11 Dec 2023, at 03:36, Bob kb8tq <kb8tq@n1k.org> wrote: >>> >>> Hi >>> >>> If the 40.92 on the label is talking about the 40th week of 1992, that would make this a > 30 year old part. That’s well before folks started putting specs and catalogs up on the internet …. It’s also pretty far back in the whole: Tele Quartz => Oak => Corning => Vectron => Microsemi => Microchip progression. >>> >>> A picture of the package might help folks come up with something that could help ( = a lot of these packages had common pinouts ….). >>> >>> Bob >>> >>>> On Dec 10, 2023, at 12:51 PM, Wilko Bulte via time-nuts <time-nuts@lists.febo.com> wrote: >>>> >>>> Last week I bought a tinyPFA (does that count as a light frequency-nut infection?). The first measurements with TimeLab have been made (more on that later). As it goes, I am obviously experimenting (and scratching my head..) a lot right now. >>>> >>>> Next plan is to measure my Efratom FRK-HLN 5 MHz unit against a brand new 5 MHz Tele Quarz Group oscillator I acquired at a ham fest. >>>> >>>> Only problem: no data on pinout or specs that I could find on the net. Maybe someone on this list can help me? >>>> >>>> 73 Wilko >>>> PA1WBU >>>> >>>> >>>> >>>> <image1.jpeg> >>>> _______________________________________________ >>>> time-nuts mailing list -- time-nuts@lists.febo.com >>>> To unsubscribe send an email to time-nuts-leave@lists.febo.com >>> >

does that 21pF marking imply that it expects a 21 pF capacitor hooked up somewhere? Or is that the capacitance of the VCXO input? or did they have someone in the factory named  Fritz and it's an inspected by sticker. On Mon, 11 Dec 2023 11:29:26 +0100, Wilko Bulte via time-nuts <time-nuts@lists.febo.com> wrote: hi Bob, Thank you. It is ancient but appears to be NOS at the same time. So maybe interesting to study its aging (?). That said: below 2 pictures with a cm ruler for scale purposes. Wilko > On 11 Dec 2023, at 03:36, Bob kb8tq wrote: > > Hi > > If the 40.92 on the label is talking about the 40th week of 1992, that would make this a > 30 year old part. That’s well before folks started putting specs and catalogs up on the internet …. It’s also pretty far back in the whole: Tele Quartz => Oak => Corning => Vectron => Microsemi => Microchip progression. > > A picture of the package might help folks come up with something that could help ( = a lot of these packages had common pinouts ….). > > Bob > >> On Dec 10, 2023, at 12:51 PM, Wilko Bulte via time-nuts wrote: >> >> Last week I bought a tinyPFA (does that count as a light frequency-nut infection?). The first measurements with TimeLab have been made (more on that later). As it goes, I am obviously experimenting (and scratching my head..) a lot right now. >> >> Next plan is to measure my Efratom FRK-HLN 5 MHz unit against a brand new 5 MHz Tele Quarz Group oscillator I acquired at a ham fest. >> >> Only problem: no data on pinout or specs that I could find on the net. Maybe someone on this list can help me? >> >> 73 Wilko >> PA1WBU >> >> >> >> >> _______________________________________________ >> time-nuts mailing list -- time-nuts@lists.febo.com >> To unsubscribe send an email to time-nuts-leave@lists.febo.com > _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe send an email to time-nuts-leave@lists.febo.com

Hello Wilko, I could find out this datasheet. Good luck. Regards Helmut

Hi I've a similarly sized oscilloquartz with a pin configuration similar with yours. Attached are a couple pictures with the pin functions annotated. Supply voltage is 12Vcc (DC-DC converter is on the same board). Hope it helps. GH --- Germán Herrera Ingeniería SES Sistemas Electrónicos S.A.| Espinosa 1045 (C1405AMM) | Buenos Aires | Argentina W: +54 11 54538426 | E: g.herrera@ses.com.ar On 2023-12-11 7:29, Wilko Bulte via time-nuts wrote: > hi Bob, > > Thank you. It is ancient but appears to be NOS at the same time. So > maybe interesting to study its aging (?). > > That said: below 2 pictures with a cm ruler for scale purposes. > > > > > > > > Wilko > >> On 11 Dec 2023, at 03:36, Bob kb8tq <kb8tq@n1k.org> wrote: >> >> Hi >> >> If the 40.92 on the label is talking about the 40th week of 1992, that >> would make this a > 30 year old part. That’s well before folks started >> putting specs and catalogs up on the internet …. It’s also pretty far >> back in the whole: Tele Quartz => Oak => Corning => Vectron => >> Microsemi => Microchip progression. >> >> A picture of the package might help folks come up with something that >> could help ( = a lot of these packages had common pinouts ….). >> >> Bob >> >>> On Dec 10, 2023, at 12:51 PM, Wilko Bulte via time-nuts >>> <time-nuts@lists.febo.com> wrote: >>> >>> Last week I bought a tinyPFA (does that count as a light >>> frequency-nut infection?). The first measurements with TimeLab have >>> been made (more on that later). As it goes, I am obviously >>> experimenting (and scratching my head..) a lot right now. >>> >>> Next plan is to measure my Efratom FRK-HLN 5 MHz unit against a brand >>> new 5 MHz Tele Quarz Group oscillator I acquired at a ham fest. >>> >>> Only problem: no data on pinout or specs that I could find on the >>> net. Maybe someone on this list can help me? >>> >>> 73 Wilko >>> PA1WBU >>> >>> >>> >>> <image1.jpeg> >>> _______________________________________________ >>> time-nuts mailing list -- time-nuts@lists.febo.com >>> To unsubscribe send an email to time-nuts-leave@lists.febo.com >> > > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe send an email to time-nuts-leave@lists.febo.com

Hi, as I was reading the time-nuts list only occasionally in the last month, I only now found this thread. This OCXO was built during the time I was head of the oscillator division at TeleQuarz. As far as I remember, this OCXO was most probably using an AT cut crystal. Therefore the aging may not be very impressive. I look forward to see your test results. Regards Bernd DK1AG -----Ursprüngliche Nachricht----- Von: jung.schorndorf--- via time-nuts <time-nuts@lists.febo.com> Gesendet: Dienstag, 12. Dezember 2023 10:19 An: 'Discussion of precise time and frequency measurement' <time-nuts@lists.febo.com> Cc: jung.schorndorf@t-online.de Betreff: [time-nuts] Re: info on Tele Quarz Group 5 MHz oscillator? Hello Wilko, I could find out this datasheet. Good luck. Regards Helmut