[Amps] Amp using 4-400 tubes

[David Kirkby]

Jeff Wilaby wrote:
>   Hello,
> A friend of mine's father went SK recently he just gave me a Rf deck that 
> has 2  4-400 tubes, no power supply. I was wondering if anyone had a 
> schematic of a Johnson Thunderbolt or any other amp using a pair of 4-400 
> tubes that I could get, or a website that I could get the info from.
> Thanks in advance, Jeff KA0ZYD 


Take a look at

http://www.g8wrb.org/tetrodes.shtml

where you will find links to Eimac and RCA data sheets on the 4-400A, IF 
that is the tube you have. I don't know the 4-400, but one might exist.

-- 
David Kirkby,
G8WRB

Please check out http://www.g8wrb.org/
of if you live in Essex http://www.southminster-branch-line.org.uk/