[Boatanchors] 5X4 tube?

[Kenneth Grimm]

The 1948 RCA tube manual says that it has the same ratings as the 5U4G.

Ken - K4XL

On Tue, Jun 22, 2010 at 10:38 PM, WW6N <yonglee at yonsei.ac.kr> wrote:

> Does someone know about 5X4 tube?
> It is not 5v version of 6X4.
> I could not find any data about it.
> It is RCA made and has an octal socket.
> Looks similar to ST type 5R4.
> de WW6N
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