On Tue, 08 May 2007 20:47:31 -0400, Chuck
wrote:

Tony, see if this answers your question:

http://www.evaluationengineering.com...201sensors.htm
The Sharp End of RF Power Measurement

Hi Chuck,

Little do you realize (or you are especially diabolical to have
introduced it), but within this monograph offered is the heresy of the
Source mismatching the load (the heresy being that any source of
sufficient power does not embody the nominal 50 Ohms Impedance).

It even contains the classic math introduced by Stephen F. Adam back
in the mid 60s for the National Bureau of Standards - and later
published by Hewlett Packard (both notorious hotbeds of technical
corruption in the matters of source impedance).

73's
Richard Clark, KB7QHC