[AMRadio] Tech info for some mow dern stuff.

Larry Szendrei ne1s at securespeed.us
Wed Aug 2 14:37:57 EDT 2017

On 8/2/17 2:26 PM, Donald Chester wrote:
> The best way to use a plastic radio for AM is to disable the audio completely or else cut the af gain back to minimum, run it at reduced carrier and use it as a VFO to drive a plate-modulated transmitter.  If it has enough carrier output capability at 100% duty cycle, it may be able to drive the final directly without a separate driver stage, particularly if the final is a tetrode or pentode.
That's what I do with my legal-limit PDM AM rig - a Kenmore TS-440 is 
the RF exciter driving the tetrode class C final grids with ~35W. They 
wouldn't need that much except I have the grid circuit loaded with some 
non-X R.


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