Richard Clark wrote:
Chipman's work in that regard is complete enough to offer Bob the
framework to render a complete solution and to explain how and why
this additional loss appears. It may not bear on his measurements
directly (the measure of a stub's Q as it eventually turns out), but
it is related closely enough to provide tangible leads.

The fact remains that a transmission line/antenna system has the
same characteristics whether one watt, 100 watts, or 1000 watts
are input to it, i.e. the efficiency and SWR of the antenna system
does not depend upon the source impedance.
--
73, Cecil http://www.qsl.net/w5dxp