Jim Kelley wrote:
Cecil Moore wrote:
EZNEC says there is ~3 degrees of phase change in the
current in 90 degrees of monopole. How can that current
be used to measure the delay through 'n' degrees of
monopole?

I have absolutely no idea. Sounds like you've made an error somewhere.

Nope, there's no error. Roy once verified that the total
current in a standing wave antenna, like a dipole, changes
phase very little over the 180 degree length of the 1/2WL
dipole. Yet, he used that same total current with its unchanging
phase to try to measure the delay through a loading coil.

In "Antennas", Kraus' plot of the total current on a dipole,
(Figure 14-2 on page 464 in the 3rd edition) also shows that
same 3 degree phase change in the total current over the 180
degree length of a 1/2WL dipole thus agreeing with EZNEC.

If one cannot detect a phase shift in 25 degrees of 1/4WL
monopole or 1/2WL dipole using the total current, how can
one expect to detect a phase shift in 25 degrees of loading
coil using that same constant phase current?
--
73, Cecil, IEEE, OOTC, http://www.w5dxp.com