Art Unwin wrote:
Cecil, reference you comment that a straight wire does NOT have a
characteristic impedance, this is one place where you misunderstanding
things.

That quote was not mine, Art, it was Roy's. My argument
is that since free space itself has a characteristic
impedance then a wire in free space must also have
a characteristic impedance and act as a waveguide
of sorts.
--
73, Cecil, IEEE, OOTC, http://www.w5dxp.com