Owen Duffy wrote:
Cecil, are you saying that a resonant dipole must have a low
impedance, and that modes where the feedpoint impedance is purely
resistive but high are not "resonant"? That seems to be what your
formulae above and explanation suggests.

Yes Owen, that's what I am saying. When I was at Texas A&M in
the dark ages, we called the feedpoint impedance of a one-
wavelength dipole an "anti-resonant" impedance. It is explained
at: http://dx.doi.org/10.1036/1097-8542.041800
"Antiresonance - The condition for which the impedance of a
given electric ... system is very high, approaching infinity."

Semantics strikes again. To distinguish the left-most low resistance
point on an SWR circle from the right-most high resistance point, we
mid-20th-century Aggie EEs called the leftmost point, "resonant", and
called the rightmost point, "anti-resonant".

If you and I were ever to agree on definitions, I have no doubt
that we would also agree on concepts.
--
73, Cecil http://www.qsl.net/w5dxp