List: time-nuts@lists.febo.com
From: Ian Stirling
Re: [time-nuts] I've designed a GPSDO, but how "good" is it?
Wed, Aug 19, 2015 6:18 PM
When those atoms all travel down the
> tube, it’s dead. In an Rb, the atoms don’t go anywhere. There is
> no built in “end of life”. They mostly die from MTBF sorts of things
> due to complexity and high temperatures, There are HP Rb’s
> built many decades ago still running on their original cells.
Bob, that is fascinating information.