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Re: [Amps] Have an AL-811 tune question???

Subject: Re: [Amps] Have an AL-811 tune question???
From: "Dave Weiss" <>
Date: Tue, 9 Sep 2008 07:47:25 -0500
List-post: <">>

Please take a look at the web site attached.  You will get the straight
information there.

Attempting to seriously under load an amplifier has serious consequences,
don't do it.


You will learn all you need to do on the web site.  I have 2 Ameritron amps
AL 80 and AL1200; I use the methods on the web site.

Good tuning...
Dave K3FT*Tune*up.htm

On Mon, Sep 8, 2008 at 10:38 PM, <> wrote:

> I have an Ameritron AL-811 Amplifier and before I blow it up I have a
> question.
> The instruction manual is not very clear on this issue.
> As to the load control, the book says to set it at 4 1/2 at 4.0 MHz.
> I find that at 3.983, after I adjust the plate for maximum output I end up
> with the plate control at 5 which is very close to the recommended starting
> point of 5 1/2.
> However, I get more output if I turn the Load control down to about 1 with
> the same input power from the exciter.
> The question is should I leave the load control at 4 and 1/2 or run it down
> to 1?
> I like to run the amplifier at a maximum of 400 watts CW so as not to push
> things.
> I can get to that power level easy either way on the load control setting
> and still be within the 200 ma grid current maximum recommend by
>  Ameritron.
> The only difference I notice is that a load control setting of 1 gets me to
> 400 watts with less exciter power.
> Bottom line is I need a lesson on how to properly tune the amp and proper
> settings of the plate and load controls.
> This may be a dumb question to some but I fell better safe and proper  use.
> Thanks,
> Dan/N4VET
> **************Psssst...Have you heard the news? There's a new fashion blog,
> plus the latest fall trends and hair styles at
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