Jim Lux wrote:
4.5 degrees is easy to measure at 4 MHz with a variety of systems.

If at 4 MHz, you measured 4.5 degrees change in
the phase of *standing-wave current* on each side
of a loading coil in a standing-wave antenna system,
would you report that value as the delay through
the loading coil? One glance at the standing-wave
current equation should convince one that is an
invalid measurement technique.

For instance, the change in the phase of the standing-
wave current is ~5 degrees from feedpoint to tip in
a 90 degree long 1/4WL monopole. How can that standing-
wave current possibly be used to measure the delay
through a loading coil in the middle of that antenna?
--
73, Cecil http://www.w5dxp.com