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Re: [Amps] Old Transmitter designs (was cathode driven/grounded grid mag

To: Ham-amps <amps@contesting.com>
Subject: Re: [Amps] Old Transmitter designs (was cathode driven/grounded grid magic revealed.)
From: "Bill, W6WRT" <dezrat1242@yahoo.com>
Reply-to: dezrat1242@yahoo.com
Date: Wed, 22 Jul 2009 17:00:28 -0700
List-post: <amps@contesting.com">mailto:amps@contesting.com>
ORIGINAL MESSAGE:

On Wed, 22 Jul 2009 18:44:53 -0400, Herzog <herzog@frontiernet.net> wrote:

>
>  It is recommended that the driver stage be heavily swamped to
>avoid such load variations.

REPLY:

Very poor advice. A far better method is to provide a resonant circuit in the
input to provide a "flywheel" effect. 

And as I said before, even that is only needed if the tube is biased and driven
so that it draws grid current. 

73, Bill W6WRT
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