[time-nuts] Counter OCXO behaviour

[Fabio Eboli]

Il 2013-01-15 15:31 David C. Partridge ha scritto:
> Yes the 1992 4E adjustment is a bear. Mine behaves pretty much the
> same, ISTR it took me a few days to get it adjusted to my 
> satisfaction
> and it was still drifting a bit.

The strange thing is that mine now is changing frequency at
more than 1x10^-10 per day, measuring a 10MHz reference
this would be one digit per day, but before it was steady
on last digit for long time intervals, last digit moved up
and down only with day/night temperature variation.
Is it possible that the OCO was sealed by so much time,
opening it I changed the internal equilibrium? (humidity?).

>
> Interestingly I saw a 1992 with a built in Rb on eBay (I think in
> France) some years back but the price went way beyong my budget.

I've about this on this list, option 04R:
http://www.febo.com/pipermail/time-nuts/2011-November/060516.html

Fabio.