[time-nuts] Used HP 5061A cesium tube

[cdelect at juno.com]

Luiz,

When shopping for a used tube look for a standard "mini" tube like the
one in the ebay listing.

https://www.ebay.com/itm/HP-Agilent-5061A-Cesium-Frequency-Standard-w-Opt
-01-C13-Good-Working-Unit/233521981160?hash=item365efea6e8:g:HeAAAOSwY2pe
Z~fB

Don't trust any option 4 high stability tubes to have much life.

The "mini" has the black plastic inserts to boost the diameter up to that
of the original tube.

Also FTS 4050 and 4060 tubes can be installed in the 5061A/B without too
much work.

Just remember you don't know how much life you will get from a used tube.

Cheers,

Corby