[time-nuts] antennas

Bob Camp lists at rtty.us
Tue Sep 28 02:37:54 UTC 2010


Hi

Based only on the fact that they never fixed the problem with the chip - I don't think they do a lot of fine grain temperature correction. They certainly went on shipping the units as spec compliant.

Bob



On Sep 27, 2010, at 10:20 PM, Hal Murray <hmurray at megapathdsl.net> wrote:

> 
>> Bottom line appears to be - fine for day to day checks. I would not trust
>> any of these chips to be long term stable to sub 10 mK levels.
> 
> I think the temperature correction is only used in holdover.
> 
> What's the time constant on learning the temperature profile of the OCXO?  As 
> long as the aging in the temperature sensor is slow relative to that its 
> (long term) stability shouldn't matter much.
> 
> 
> 
> -- 
> These are my opinions, not necessarily my employer's.  I hate spam.
> 
> 
> 
> 
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