wrote:

John Popelish wrote:
In such a large beast, at the intended frequency of operation,
unintended parasitic effects may be as big as the intended inductive
effect. These are the problems that make designing good (as in, "act
as lumps of inductance") coils interesting.

Actual time delay of current through 100 turn 10tpi 2 inch diameter ten
inch long inductor:

http://www.w8ji.com/inductor_current_time_delay.htm

You didn't measure the time delay through the coil. There is
zero phase change in the standing wave current and the SWR in
your circuit was ~16,000:1. The only way I can think of to
measure the actual delay through a coil is in a traveling
wave environment, not a standing wave environment. No one
has tried to measure the coil delay in a traveling wave
environment.

One more time, the standing wave current phase is unchanging
over every 1/2 wavelength of antenna. At the 1/2WL points it
changes abruptly by 180 degrees.

If you locate a standing wave node inside the coil, you will
measure a 180 degree phase shift through the coil.
--
73, Cecil http://www.qsl.net/w5dxp