[R-390] CV133 vs 6C4

[Bruce Hagen]

Tom:
FCV133 is a 6C4 but don't know country of origin.

Bruce Hagen

-----Original Message-----
From: r-390-bounces at mailman.qth.net [mailto:r-390-bounces at mailman.qth.net]On
Behalf Of Tim Shoppa
Sent: Friday, January 27, 2006 5:31 PM
To: r-390 at mailman.qth.net
Subject: [R-390] CV133 vs 6C4

Is the CV133 the British version of the 6C4? Is it the british mil-spec
version? (I'm not all that familiar with British tube numbering, I'm
deeply suspicious of any tube that says "ECC" on it too!)

Or am I wrong and "CV133" is a Russki marking?

Tim.
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