[time-nuts] Z3801A going into Holdover

[Bob kb8tq]

Hi

Anything odd going on with the EFC voltage before / after holdover?

Bob

> On Jun 20, 2019, at 1:05 PM, Dan Rae via time-nuts <time-nuts at lists.febo.com> wrote:
> 
> I have an elderly 3801A with some 182,000 hours on the clock, which if my arithmetic is correct means over twenty years of operation.  Since it has a well aged and remarkably stable OCXO I would like to keep it going if possible.  Recently it has been going into Holdover and staying there for no reason that I can see, it is fed from the same antenna / splitter amp combination with a good sky view as eight other GPSDOs here.  LH reports as good a signal strength on it as any of the others.  A Cold Reset gets it going again.
> 
> Does anyone know if a more modern receiver can be fitted in place of the existing VP6?  Is it likely to be a Rx problem anyway?
> 
> I'm running LH at the moment and will try to capture a screen when it next goes into Holdover to see if that gives me any clues.
> 
> Thanks for any advice!
> 
> Dan
> 
> 
> 
> 
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