Yes and no. The CPX version is rated for a higher plate voltage than the CX
version with the Eimac tube. The CPX tube has a taller ceramic insulating
portion at the base. The Svetlana CPX and CX versions had the same ceramic
height and both will take the higher plate voltage.
73, Paul
PAUL HEWITT
WD7S PRODUCTIONS
QRO HOMEBREW COMPONENTS
http://home.earthlink.net/~wd7s
----- Original Message -----
From: "DC" <daclark56@hotmail.com>
To: <amps@contesting.com>
Sent: Sunday, December 30, 2007 2:41 PM
Subject: [Amps] Alpha 87A Tubes 3CX800A7 and the 3CX P 800A7 ?
> Is the 3CX P 800A7 interchangable with the 3CX800A7?
>
>
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