So for bringing the power up from 50 to 100% you need 50% of the total power,
That doesn't sound right. If the no-audio DC input to the final is 50 watts, to get 100 watts input you need another 50 watts. That would mean the audio equals 100% of the DC power, not 50%.
to quote the article,
"In order to modulate the carrier wave 100 pc, the modulator must be capable of cutting the high tension supply voltage completely on the negative voice peaks and doubling the supply voltage on positive peaks."
If the modulator doubles the high tension supply on positive peaks, would this not quadruple the RF output on those positive peaks?
Further quote:
"For 100 pc modulation, the modulator must deliver audio power equal to half the DC power input to the class C amplifier"
That being the case, how would "audio power equal to half the DC power" be enough to quadruple the RF output???