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Subject: [AMPS] start
From: W8JI@contesting.com (Tom Rauch)
Date: Tue, 24 Oct 2000 10:29:00 -0400
> 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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