Jim Kelley wrote:
There is no support for your claim.

There is plenty of support for my claim, Jim, but you
deleted it. I will simply repost it over and over until
you respond.

Given the following experiment with two signal generators
equipped with circulators and load resistors - the generators
are phased-locked to ensure coherency. The two feedlines
are of equal electrical lengths.

SGCL1 is turned on. SGCL2 is turned off.

100W | 25W
50 ohm---50 ohm line---+---291.4 ohm line---291.4 ohm
SGCL1 --Prev1 | SGCL2

What is Pref1 before SGCL2 is turned on? What is Pref1
after SGCL2 is turned on? Did Pref1 change after SGCL2
is turned on?

Since Pref1 *NEVER* encounters the impedance discontinuity
how can it possibly be affected by SGCL2 being turned on?
This is a perfect example of wave interaction.
--
73, Cecil http://www.w5dxp.com