Bill wrote,

W5DXP wrote:

William E. Sabin wrote:

If the transmission line input impedance is replaced with a lumped LCR
circuit, then confusion disappears and we have a conventional problem
in AC circuit analysis.


Some confusion disappears. Some additional confusion arises. It should
be recognized that replacing a V/I impedance with an impedor is a shortcut
and doesn't necessarily represent reality. Math models certainly do not
control reality. For instance, ghosting is not the same in the two cases.
A TDR will not give the same results.

I give up.

Bill W0IYH


I would like to know why Cecil, for instance, uses pulses, as in a TDR, in
order
to argue a steady state point. Impedance is normally defined for any "impedor"

at only one frequency at a time. A single pulse, according to Mr. Fourier, can

be characterized with a component at all frequencies. So which frequency and
which impedance are you talking about, Cecil, when you change the subject from
steady state to the time domain?
Secondly, math models are descriptions. Their purpose has never been to
control
anything. Moreover, no one except you, Cecil has ever implied that anyone
thought
they were. Do I detect a straw man here?
73,
Tom Donaly, KA6RUH