I imagine there are many of these on the air. I bought
mine at a swapfest and converted it (not recommended
for beginners). Mine still has the 8874 in it, but as
Pat says, it will take a 3CX-800. There is a 13.5 volt
filament winding on the transformer for that tube, if
the change is desired. Mine runs unconditionally
stable. I didn't pay anywhere near $600 for it,
however.
73 Paul K7CW
--- Dick Hanson <k5and@ga.prestige.net> wrote:
>
> Folks.....
> Please respond directly to W5OZI if anyone
> interested in this amp.
> 73
> ----- Original Message -----
> From: "w5ozi" <w5ozi@ktc.com>
> >
> > Back in 1996 I bought an ETO MRI Driver which
> tunes about 45-70 MHz.
> > Designed to use a 3cx 400 a7, but the socket will
> accomodate a 3cx800a7.
> > Its internal power transformer is rated (according
> to Dick Ehrhorn) at
> about
> > 3KVA. Jay Kesterson, K0GU has modified one and
> reports that it will
> develop
> > about 1 KW output, but he usually runs his at
> about 800 because the AC
> input
> > is only 120 volts. I was going to modify the amp
> for use as a DX-pedition
> > rig, but just never got around to it.
> >
> > Would you ask around and see if there is anyone
> you know who would be
> > interested in buying this amp from me? I paid
> $600 for it less tube.
> Also,
> > I have a new 3CX800a7 which I would sell for $300.
> I have the schematics
> > plus some modification notes.
> >
> > Thanks
> 73 de Pat
> >
> >
>
>
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