Roy Lewallen wrote:
Since EZNEC has been mentioned so much lately, it's appropriate to point
out that it's able to calculate the current at all points along a
helically modeled loading inductor with what I believe to be very good
accuracy. And it does it without any use or knowledge of presumed
traveling voltage or current waves.

Yet, EZNEC reports the difference in standing wave current and
traveling wave current better than you do.

EZNEC correctly reports the phase of the standing wave current to
be essentially zero all up and down a 1/2WL dipole using small wire.

EZNEC correctly reports the phase of the traveling wave current to
be the number of degrees away from the source in a traveling wave
antenna.

EZNEC clearly recognizes the difference between standing wave current
and traveling wave current. Yet you tried to use standing wave current
with its unchanging phase to measure the phase shift through a coil.
Standing wave current doesn't even change phase through 45 degrees
of wire. Why would you expect it to change phase through 45 degrees
of coil?
--
73, Cecil http://www.qsl.net/w5dxp