[Test-Equipment] HP 10811A Crystal Oscillator info

[John Miles]

It's a very good frequency standard.  The best there is, short of a rubidium
source.  Calibrate it and leave it turned on, and after an initial 30-day
aging period, it will probably stay put to the tune of 1E-8/year, possibly
even better.  I had one that approached 1 ppb/year.

Drawbacks:

- It may have a bad thermal fuse on the outer circuit board.  If so, just
replace it with a short.
- It takes a few minutes to warm up.  Until then, it will be a long way off
frequency.

Specs at http://www.leapsecond.com/museum/10811a/90027-1.pdf ,  see Google
for more links on "10811a."

-- john KE5FX

>
> I found this oscillator at a fest.  It's in good condition physically
> and is complete with it's own circuit board.  Besides being for some HP
> equipment, can anyone tell me what it would be good for?  Would it be a
> good frequency standard or is it just a novelty?
>
> Thanks,
>
> Bill, K3PGB
>
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