Roger wrote:
Roy and I are talking about this on other postings. I guess the purest
might point out that a 50 ohm generator only has a voltage to current
ratio of 50, but we don't know if it also has a resistor to absorb
energy. It is like a black box where the only thing we know about it is
that when we connect a 50 ohm resistor to it through a 50 ohm
transmission line, there are no standing waves.

Good for you, Roger, every reference I have on Thevenin
equivalent boxes say that what is happening inside the
box is irrelevant because it bears no resemblance to
reality.
--
73, Cecil http://www.w5dxp.com