[time-nuts] cesium clocks..

[M. Warner Losh]

In message: <PKEGJHPHLLBACEOICCBJOECPINAB.jmiles at pop.net>
            "John Miles" <jmiles at pop.net> writes:
: Maybe try
: 
: 	hp (5071a,5061a,5061b)
: 
: ... to start with.
: 
: The 5071as seem more desirable but they're also usually more expensive, and
: (the really scary part, true of all of them): how do you tell how much tube
: life is left?

Beam Tube Voltage?

Warner