Gene Fuller wrote:
We all know that "power flow" is a bit of an oxymoron, but it
still is widely used as an equivalent to "energy flow".

From your last posting it was not readily apparent
that you knew the difference between energy and power.

There is no reflected power wave but there is a
reflected RF energy traveling wave, the power of which
can be measured at a fixed point. A Bird directional
wattmeter indirectly senses the reflected power at the
fixed location of the Bird.
--
73, Cecil http://www.w5dxp.com