On Sun, 5 Sep 2004 19:24:02 +0000 (UTC), "Reg Edwards"
wrote:
snip

In brief, how can you have a conjugate match with the source impedance
hopping about trying to follow the load? ;o)
----
Reg, G4FGQ

Reg, I have a myriad of measurements which prove that when the pi-network is
adjusted to deliver max power for any reasonable drive level into any reasonable
value of load, the source impedance is the conjugate of the load impedance. When
adjusting the load control of the network for max output the output resistance
equals the resistance of the load. And when the plate tuning is adjusted for max
out the reactance injected into the network equals the reactance opposite to
that in the load. To be practical, be assurred that the tuning and loading
controls are alternately adjusted continuously until they converge and the max
power is delivered.

Having performed these measurements many, many times, I assure you that the
resulting data isn't a series of coincidences. So instead of the source
impedance 'hopping about trying to follow the load', when the network is
correctly adjusted, the source impedance 'finds' the load and stays put until
the load is changed and the network readjusted to accomodate the new load.

Walt