K1TTT wrote in
:


define "mismatch loss".

Mismatch loss is the reduction in power available in a mismatched load
compared to a matched load. Mismatch Loss can be calculated in linear
systems with Zs purely real as 1-rho^2. I wrote some notes at
http://vk1od.net/blog/?p=659 which discusses the underlying assumptions.


and why would you expect that vswr is a good predictor of power
output? other than radios that use vswr sensing circuits to reduce
power output to protect their output transistors?

The concept of Mismatch Loss is a sound one, but application to a typical
ham transmitter is flawed because the underlying assumptions are violated
..


and why would anyone expect the output of an rf amplifier to be linear
except in a narrow range of selected loads and tuning conditions?
thats just plain crazy!


Yes.

Owen