Marv says:
>This is hearsay but I have heard that leaving an oxide
> type heater on low voltage standby for extended periods
> is not a good practice.
Isn't this one of the things that causes cathode interface impedance problems? I
seem to remember that Millman and Straub's 'Pulse and Digital Circuits' has
something about this
in it.
73
Peter G3RZP
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