[time-nuts] cesium tube pumping

[Brooke Clarke]

Hi George:

There's been some prior posts based on the experience of the poster 
indicating that the FTS tubes may have better ability to hold vacuum and 
might still be good after a number of years without running the ion pump.

My FTS4060/S24 has no provision or mention in the manual about using the 
ion pump for storage.  But it does have a useful life table indicating 
the tube lasts longer if one a year it's pumped for a short time.

Have Fun,

Brooke Clarke, N6GCE
-- 
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http://www.precisionclock.com

george wrote:

> How often does Cesium frequency standards require cesium tube pumping.
> 
> Is it more frequent with age, less frequent with newer designs (5071's)?
> More frequent with older designs (hp5061's) ?
> 
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