Owen Duffy wrote:
if by 'changing' you mean 'changing with displacement or position', to
make these statements true, you must be talking about lossless or
distionless lines. If your entire discussion is premised on this, then
can your methods / formulas solve practical lossy line problems?

Of course, that's why the feedpoint impedance of a 1/2WL
dipole is not zero ohms. Approximately 20% of the
energy on the antenna is radiated during steady-state.
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73, Cecil http://www.w5dxp.com