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Re: [Amps] AL-811H conversion ?

To: "Hugh VA3TO" <>, <>
Subject: Re: [Amps] AL-811H conversion ?
From: "jeremy-ca" <>
Date: Sun, 15 Jul 2007 13:38:08 -0400
List-post: <>
The 811 works fine on 6M but 4 of them have way too much output C to be able 
to construct a convential tank circuit.
I dont know the HV available in that amp but if its 1500-1700 you can easily 
use a pair of 572B's and maybe 3 to get 500-600W out on 6M


----- Original Message ----- 
From: "Hugh VA3TO" <>
To: <>
Sent: Sunday, July 15, 2007 8:56 AM
Subject: [Amps] AL-811H conversion ?

>I have the opportunity to aquire an Ameritron AL-811H that needs a new
> transformer for the HVPS.
> I could get a replacement xformer but before I do that, I'm wondering if
> I could use it as a basis to something else with.  What I'd *really*
> like to do is make it into a 6m amp but as I understand it the 811 tubes
> don't work well up to 6m. Could I change the amp to run a single 3-500z
> or is the power supply not big enough ?
> Has anyone else ever done something different with one of these amps ?
> Should I replace the xformer and leave well enough alone ?
> 73 de Hugh VA3TO
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