"Richard Clark" wrote:
In the
game of describing an antenna as a transmission line, the
non-linearity is compellingly obvious.

A non-linear system would generate harmonics so where are
those harmonics?

A 1mm wire strung 36 meters in
outer space is certainly thin by engineering conventions, but it
doesn't qualify as the current distribution misses the mark of
Cosinality by 5 or 6% (the distribution of a poor fit demonstrates the
non-linearity).

Nobody said it was a perfectly ideal cosine curve. You seem to have
a strange definition of non-linearity as anything that differs from the
ideal. By that definition, everything is non-linear (including your
definition).
The definition of non-linearity being used here is "discontinuous".
Exactly where does the current in an antenna become discontinuous?

Heaven forbid the cosine curve exhibit the same accuracy as a resistor.
Would you also assert that a 52 ohm resistor that is marked 50 ohms is
exhibiting non-linearity?
--
73, Cecil, W5DXP