"Richard Clark" wrote in message
...
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
Richard,
I believe Edison was talking about the Synchronous Impedance of an
alternator. That measurement is based on the short circuit current of the
machine, and limited by the leakage inductance; purposely made large for
self protection. As for pertinent numbers, a 2300V 1000A alternator has an
effective series resistance of about .05 Ohm. That is feeding a load of 2.3
Ohms.

Tam/WB2TT