Nope, didn't try that. But, according to the watt meter, I can tune any SWR
out by adjusting the tuner. Thanks, Mark.
Tom W7WHY
On Tue, Nov 18, 2025, 7:53 AM Mark Bitterlich <markbitterlich@gmail.com>
wrote:
> Is the idling current around 75ma when keyed but zero drive from exciter?
>
> Are the plate tune and load settings close to the manuals recommended
> settings?
>
> Have you tried other bands?
>
> Are you tuning into a known impedance? As in a dummy load?
>
> Does the wattmeter read correctly when the exciter is transmitting and the
> amplifier remains unkeyed?
>
> Mark
> Wa3jpy
>
> -------- Original message --------
> From: "Tom Osborne Sr." <w7why1@gmail.com>
> Date: 11/17/25 8:52 PM (GMT-05:00)
> To: amps@contesting.com
> Subject: [Amps] AL811H no output.
>
> I have an AL811H am that has no output. When driving the amp with 50
> watts, the output on the watt meter shows a little less than 50 watts. The
> weird thing is that according to the ammeter, everything looks like it is
> loading just fine. I get about 75ma grid current, and the dip in the plate
> current is about 450ma with 50 watts drive. Everything on the amp looks
> fine, but no output.
>
> So.eone said it might be the 2, .001, 7.5kv caps. I ordered some and
> replaced them, but still no output from the amp. Any ideas??
>
> Thanks and 73
> Tom W7WHY.
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