On Oct 10, 2004, at 7:45 AM, Vic Rosenthal wrote:
StephenTetorka@cs.com wrote:
Hi all:
I need to better understand the workings of a plate modulator for AM.
Considering the RF amp with 2 x 813's and the modulator with 2 x
813's - what are the equations and math to work out the required
wattage, impedance, step ratio etc.
What I suggest is that you get a copy of the ARRL handbook from the
early 50's or late '40's. In addition to the information you seek,
you'll find lots of stuff about methods of improving the effectiveness
of the system (clipping & filtering, overmodulation prevention, etc.)
as well as practical examples of circuits. You might avoid some
mistakes.
Using the modulation formulas in these publications is a mistake.
Richard L. Measures, AG6K, 805.386.3734. www.somis.org
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