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Re: [Amps] class "A" RF amp question

To: "Gary Schafer" <garyschafer@comcast.net>,"'Robert B. Bonner'" <rbonner@qro.com>,"'kenw2dtc'" <kenw2dtc@comcast.net>, <amps@contesting.com>
Subject: Re: [Amps] class "A" RF amp question
From: "Tom W8JI" <w8ji@w8ji.com>
Date: Wed, 8 Nov 2006 19:05:21 -0500
List-post: <mailto:amps@contesting.com>

> Actually low level AM generated with something like an 
> FT101 and amplified
> with a linear amp can produce much better quality AM than 
> most plate
> modulated AM transmitters.
> It is much easier to get low distortion modulation at low 
> levels than it is
> at high levels. However the trade off is a lot of heat 
> generated in the
> linear.

Truer words were never spoken.

Trying to get linear undistorted audio out of a plate 
modulated tetrode or pentode is almost a joke. It takes a 
low mu triode well into class C or some very special 
techniques.

73 Tom


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