> Tom,
> How long would you recommend the filament voltage of a 4CX1000A
> be on for, before applying the other rails?
>
> 73, Mark G4AXX
Eimac has that data in it's tube specs, I don't know it offhand.
All high power MOX cathode tubes are sensitive to warmup time
and also HV.
Excessive high voltage and / or drawing current before the cathode
is fully warm will strip the cathode and ruin the tube.
73, Tom W8JI
w8ji@contesting.com
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