[R-390] CV133 vs 6C4

[Cecil Acuff]

Well you will have to excuse us over here.  The CV markings must be somewhat 
obscure on the world market because there wasn't much to be found on them on 
a Google search.  The pictures I did find showed them to look much like the 
Russian markings and build.

We understand "Valves"...but they are usually under the "Bonnet"

Cecil Acuff
WB5VCE
----- Original Message ----- 
From: "Andy Jackson G8JAC" <g8jac at btinternet.com>
To: <r-390 at mailman.qth.net>; "Tim Shoppa" <shoppa_r390a at trailing-edge.com>
Sent: Friday, January 27, 2006 5:59 PM
Subject: RE: [R-390] CV133 vs 6C4


> Russian?  How dare you sir!
>
> The CV stands for Common Valve (so not surprising that you guys over there
> don't recognise it as a "tube")!
> It is a series of devices approved to a common British specification with,
> mostly, equivalents in the commercial world.
> CV133 is indeed, equivalent to a 6C4, A.K.A. in europe as the EC90.
> The CV2842 is the equivalent of the 6C4W.
> CV5183 is the 6C4WA that also meets JAN approval specifications,  and 
> CV4058
> is a 6C4WA that meets British military secs.
>
> 73,
> Andy G8JAC
>
>
>
> Previous people said:
>
> |>I'm guessing from what little I could find that the CV is Russian
> |>or another eastern block designation.
> |>`
>
> |>> 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?
> |>
>
>
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