[Amps] Plate modulator xmfr ?

[R.Measures]

On Oct 10, 2004, at 7:45 AM, Vic Rosenthal wrote:

> StephenTetorka at 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