Looking at the schematic for the Power Supply for 360 Watt Class E Transmitter and Class H Modulator (http://www.classeradio.com/psm_modulator_power_supply.gif), specifically looking at the Overload Detector, I think I understand that the Overload Detector circuit just opens the keying line voltage when enough voltage drop is seen across the 0.1 ohm resistor. I did some calculations ans am curious about something.
Using 30A as a reasonable overload condition (125V at 20A + 62V at 8A)
P = I^2 x R
P = 30^2 x 0.1
P = 900 x 0.1
P = 90W
Why then is the 0.1 ohm resistor only rated at 25W?
Even at 28A (the rated peak) you will need to dissipate 78.4W through this power resistor.
What am I missing?