[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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