[time-nuts] Restoring GR 1120-AB Frequency Standard

Peter Putnam pico.2008 at sbcglobal.net
Sat Aug 23 18:47:59 EDT 2008


I've posted some General Radio notes and specifications on their Model 
1115-B oscillator, hoping there might be some relevance to the Model 1120.

Product specific information  starts on page 8.

http://www.ni6e.com/genrad/

Regards,
Peter
NI6E


Max Robinson wrote:
> There must have been several different versions of this unit.  The 
> oscillator I have is 5 MHz.  The frequency dividers in the rack I got it out 
> of were discrete transistor construction.  Seems to me the clock used a 25L6 
> although I don't remember how they derived the heater voltage.  There was 
> also a phase locked frequency multiplier with outputs at 10 MHz, 100 MHz and 
> 1 GHz.  The frequency divider module had outputs down to 1 PPS.
>
> After typing that I'm not sure the oscillator frequency is right.  Maybe 
> it's 1 MHz.  I'm sure it's not 100 kHz.
>
> Regards.
>
> Max.  K 4 O D S.
>
>   



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