Old Tubes - Help!

[chouse]

the vt 4c is a western electric 211 50 watt jug.

the vt 25 is a type 10 tube and can be used in place of the type 10 in
1930's qst transmitter projects such as the george grammer tnt push pull
transmitter.. it is better to fry one of these than your dome top type
10!


ed sharpe


Roderick M. Fitz-Randolph wrote:

> I have recently accumulated the following tubes:
>
> 1 ea.  VT-4-C
>
> 1 ea.  T40
>
> 1 ea.  201A
>
> 1 ea.  VT-25
>
> 1 ea.  UX-281 (Radiotron)
>
> 1 ea.  CX-381 (Cunningham)
>
> 3 ea.  T55
>
> Could someone that has the information please pass along to me
> the general specifications on these?  I would greatly appreciate it!
>
> Are any of these suitable for a Hartley oscillator?  Apparently the
> 811As I have are not!
>
> Rod, N5HV
> w5hvv at aeneas.net
>
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