[R-390] CV133 vs 6C4

[Cecil Acuff]

I'm guessing from what little I could find that the CV is Russian or another 
eastern block designation.

I have had good luck with the quality of most ECC marked tubes.....

YMMV...

Cecil...
----- Original Message ----- 
From: "Tim Shoppa" <shoppa_r390a at trailing-edge.com>
To: <r-390 at mailman.qth.net>
Sent: Friday, January 27, 2006 4:31 PM
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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