Wes Stewart wrote:
On Mon, 13 Jun 2005 21:44:05 -0400, Ken Scharf
wrote:


Dan/W4NTI wrote:

I am thinking of building up a single ended 4-400A for six. Mainly cuz I've
got a old homebrew HF amp with a good bit of the "stuff" I need to do it
with.

I wonder (since I'm a bit rusty these days), if I can Grid Drive it? I will
only have a basic transverter output (8Watts) available.

Anyone point me to a site or material about the input and output circuitry
needed?

Any thoughts?

Dan/W4NTI



If you run the tube in class AB1 it won't need ANY driving power,


Of course you will.


The TUBE won't require any driving power as it won't draw any
grid current. HOWEVER there WILL be losses in the input coupling
network so some power will be required to generate the required
driving voltage. My point was that 8 watts should be enough.