On Sat, 28 Aug 2004 09:23:40 GMT, Rich Grise wrote:

No, that's plate modulation. Class C is when the active element
conducts for less than 180 degrees of the cycle. A lot of times
when they plate modulate, they'll also apply the modulation to the
screen grid or even the control grid or previous stage. :-)

Can't blame 'em! Given that the audio power level needs to be
commensurate with the transmitter's RF power output level, using final
plate modulation with a 500KW TX might be a more than a little
inefficient. :-)


--

"What is now proved was once only imagin'd." - William Blake, 1793.