Jeff wrote:

The SWR has to be the same at any point on the coax or transmission line
minus the loss in the line. A simple swr meter may show some differance
because of the way that kind of meter works. By changing the length of the
line , the apparent SWR may be differant at that point.

There is no such thing as apparent SWR. It is what it is in a given
place.


By 'apparent SWR' he means as indicated SWR on the meter, and yes it can
change at various point on the line due to inadequacies in the meter;
the 'real' VSWR will of course remain the same at any point on a
lossless line.

Jeff

Nope, it changes in the real world due to various line losses and in
the theoretical, lossless line world it can change for several reasons.

Ever heard of a transmission line impedance transformer, which is
multiple sections of transmission lines with differing impedance?

Ever heard of a tapered impedance transmission line which is also
used to transform impedances?

The SWR at any location in a system is what it is. Bringing up
equipment errors is a straw man.


--
Jim Pennino