John Popelish wrote:
Can you use this example, with varying frequency to explore your
assertion that the time delay (frequency times phase shift) of the coil
varies little over a significant range of frequencies up to self
resonance, and that that delay is about 1/4 cycle of the self resonant
frequency?

Please don't put words in my mouth. What I have previously said
is that the delay can be *ROUGHLY* calculated using the self-
resonant frequency. I said something about +/- 50% accuracy.
Here's what EZNEC reports as the phase shift through the coil
in the traveling wave antenna previously tested at 5.89 MHz.

5.5 MHz: 14.1 deg, 5.89 MHz: 15.7 deg, 6 MHz: 16.2 deg,
7 MHz: 21.4 deg, 8 MHz: 29.5 deg, 9 MHz: 45.9 deg,
10 MHz: 89 deg, 11 MHz: 141.4 deg, 12 MHz: 163.0 deg,
13 MHz: 172.3 deg, 13.7 MHz: 183.82 deg.

The linear delay calculation is off by 59%, not too far from
my 50% rough estimate. Please note that the above values of
delays reported by EZNEC are nowhere near the 3 nS measured
by W8JI in the standing wave environment.
--
73, Cecil http://www.qsl.net/w5dxp