[time-nuts] Re: info on Tele Quarz Group 5 MHz oscillator?

[Jim Lux]

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 at 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 at lists.febo.com
>> To unsubscribe send an email to time-nuts-leave at lists.febo.com
> 
_______________________________________________
time-nuts mailing list -- time-nuts at lists.febo.com
To unsubscribe send an email to time-nuts-leave at lists.febo.com