On Aug 29, 6:34*pm, Cecil Moore wrote:

The *feedpoint impedance* of a standing-wave antenna depends upon
the *electrical* length of the antenna. If it is resistive, the reflected
wave has undergone at least a 180 degree phase shift referenced to
the forward wave. Otherwise, the feedpoint impedance would not
be purely resistive. etc

However an assumption might be taken from some posts here that a short
vertical radiator loaded to resonance is the full electrical
equivalent of an unloaded, resonant vertical of about 1/4-wavelength,
while it is not. That is my point.

RF