[Amps] Plate modulator xmfr ?

[StephenTetorka at cs.com]

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.

And, just how much can one depart from the ideal arrangement and with what 
effects? ( should I not be able to find the right xmfr for this amp I'm planning 
to build ).

PS: I am seeking that modulator xmfr at this time.

Tnx,
Steve
WA2TAK