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[Amps] installing a new 3CX1200D7

To: "amps@contesting.com" <amps@contesting.com>
Subject: [Amps] installing a new 3CX1200D7
From: Carl Braun <Carl.Braun@cattron.com>
Date: Mon, 11 Nov 2024 16:49:55 +0000
List-post: <mailto:amps@contesting.com>
Please offer any suggestions for installing a new triode in a Henry amplifier.

I've purchased a NEW Eimac 3CX1200D7 (YU121) from Richardson Electronics as I 
wanted a spare for my Henry Ultra amplifier. The amplifier is running well with 
its original (1991) Eimac 3CX1200D7 in place, so I want to remove that one and 
place the new one in service to ensure its working well and to determine output.

What is the best way to start up a new ceramic triode?  My plan was to install 
the tube and turn on the amp and let it idle for 4 hours before applying any RF 
to it.  The 3CX1200D7 is an instant on tube that will have 3600/4600V plate 
voltage and 6.3V on the filament.

Suggestions?

Carl W9LF

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