Keith Dysart wrote:
Any example where reflected energy is allowed to
reach the source cannot be analyzed in any valid
real-world way.

A strange assertion. Consider two wire phone lines; transmitter
and receiver at each end. Consider cable modems; ditto. Consider
computer busses; ditto.

We are discussing ham radio sources, Keith, which are
none of the above. How many hams use cable modems for
their RF transmissions? Please get real.
--
73, Cecil http://www.w5dxp.com