Richard Clark wrote:

On Tue, 25 May 2004 07:27:03 -0500, "Richard Fry"
wrote:

REALITY CHECK: If tx source Z really was 50 ohms, a tx connected to a 50
ohm load would lose 1/2 of the RF power it generates to that internal Z.


Dear Richard,

This is the time-honored misreading and misapplication of Thevenin's
theorem posed by Edison to confound investors in Westinghouse's AC
generation plants. Look at the ratio of DC to AC power plants
constructed in the past century to find the poor accuracy of your
reading.

73's
Richard Clark, KB7QHC

Boy, I'm gonna have to try and find my old EE5xx Non-Linear Transistor
Design notebook. I doubt I could translate it into words for this
section of the thread, but it is incredibly applicable.

I took it not knowing what it really was - RF amplifiers, tank circuits
and matching circuits of every flavor, and how much DC power was used
and RF delivered at the primary freq and all harmonics. He also covered
doublers, triplers, phase locked loops (from scratch), the whole 9
yards. I learned more in that one class than in any other 5 I took.
The professor was fantastic and very very tough. It was also the most
demanding course I ever took.

tom
K0TAR