[Amps] class "A" RF amp question

Tom W8JI w8ji at w8ji.com
Wed Nov 8 19:05:21 EST 2006



> 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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