Let me suggest an additional exercise for Richard and anyone else that
believes that source impedance affects the SWR.

Those of us who believe otherwise can easily calculate the SWR which
will exist on a line, and the SWR that will be read by an SWR meter at
any point in a system, by knowing simply the line length and impedance
and the load impedance. We don't require knowledge of the source
impedance. The equations we use can be found in numerous places, and
these have been used for over a century to design working systems.

You must use other equations to predict SWR -- equations which include
source impedance. It would be very interesting to see those equations.
Your equations and ours will predict different results from the simple
test I proposed. So if you'll show us the equation you use to calculate
SWR which includes source impedance, it'll be easy to see whether it's
correct or not.

Roy Lewallen, W7EL