----- Original Message -----
From: "Lee Buller" <k0wa@swbell.net>
To: <amps@contesting.com>
Sent: Friday, March 28, 2008 9:10 AM
Subject: Re: [Amps] SB220 "A" mods
> And......
>
> You might look at the following after understanding the amp fully.......
>
> Removing the grounded grid circuitry and just grounding the grids. After
> all, it is a grounded grid amp.
There are 2 schools of thought on that. I prefer to leave them original. The
trade off is about 50W.
Ive converted several hundred to 6M over the past almost 40 years and they
are 100% stable just as Heath designed them.
I have also received several other conversions in here that "blew up" and
all had grounded grids. And a bunch that didnt survive HF contest use.
And I certainly wouldnt use the AL-82 as a model of stability.
Carl
KM1H
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