[time-nuts] Re: HP 5065A, no 2nd harmonic.

[paul swed]

Jared I would be happy to see if I can help remotely. We may want to take
this offline or not. Others may find it interesting.
Regards
Paul
WB8TSL

On Thu, Nov 18, 2021 at 12:56 PM Jared Cabot via time-nuts <
time-nuts at lists.febo.com> wrote:

> Hi all,
>
> I have a 5065A Rubidium Standard that was working ok, but has lost the 2nd
> harmonic.
> My voltages are all ok, the physics package hasn't overheated and I have
> replaced the usual resistors on the lamp assembly (and it was running fine
> afterward for a while), the lamp illuminates, and I've done the procedure
> to remove cell flooding.
> All readings on the 'circuit check' switch are nominal, apart from the 2nd
> harmonic position. No matter what I do, I can no longer get it to raise
> above 0.
> However, when I first turn the unit on, the needle drops to 0 and flicks a
> little before settling on 0 and staying there.
>
> Can someone help me get this unit up and running again?
>
> Thanks!
> Jared_______________________________________________
> time-nuts mailing list -- time-nuts at lists.febo.com -- To unsubscribe send
> an email to time-nuts-leave at lists.febo.com
> To unsubscribe, go to and follow the instructions there.