[Amps] AL 811 Tuned input/output issue

[Ryan Foster]

I have a similar problem with an old 4 tube 811 amp, but I didn't need it so
I shelf'ed it.  I guess I'll take a look into that problem again myself.  I
don't have anything to test tubes, but I do have some spares to test with
that I hopefully moved from the other house, otherwise they are snowed in
until May.  I don't think it is a tube for me though.

Yea, that was no help for you... Not even sure why I replied now... :)

--Ryan, w8cya

On Mon, Jan 4, 2010 at 9:29 AM, David N. <pkmaint at yahoo.com> wrote:

> hello all
> I am working on an AL811 3 tube (811's)
> The input swr is all over the place and the output is really load. due to
> radio reducing power.
> I put a tuner in between the the 2 to Make the radio happy. But I am still
> only getting about 250-300 watts with 70watts input I cannot draw full grid
> current. High voItage is correct for Load/No Load. I also checked to se if
> the shaft slipped on the tuned input board coupling but it is ok all is
> lined up. I don't see any burnt or broken parts. I am thinking Bad tube but
> I have no way to check them. Any suggestions? I would hate to throw parts at
> it that it does not need. The amp is 2.5 ys old
> Thanks David KR4OW
>
>
-- 
"If someone has a gun and is trying to kill you, it would be reasonable to
shoot back with your own gun." -- The Dalai Lama, May 15, 2001