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

[Bob kb8tq]

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 at 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 at 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 at 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>
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>>