Hello Al,
You may look at:
http://www.dj2hz.de/4x4-1000.html
http://www.dj2hz.de/1750.html
which are actually using four QB5/1750 tetrodes, passive grid.
Other nice amps on the same site:
http://www.dj2hz.de/homebrew.html
73,
Traian,
YO9FZS
n7ioh wrote:
> Are there any problems in using the 4-1000A in a passive grid-driven
> mode on 160 - 10 meter or on 6 meters? If not, what kind of output can
> I expect to get? Second, I have seen amps that use a roller inductor
> and not a band switch, any thoughts?
>
> Thanks, Al N7IOH
>
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