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/
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