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Cecil Moore wrote:

What is the traveling wave current delay through the coil in
degrees? That's easy to measure. That current delay is the
degrees that the coil supplies to the antenna. You can ignore
any measurements involving standing wave current as being
essentially meaningless. What is important is the traveling-
wave current delay through the coil. Please measure it and
report what it is for your 'physically small toroid'.

Your lumped circuit analysis pre-assumes a zero delay
through the coil. That delay is certainly not zero in the real
world.

The problem with people doing work to verify this is even if several
people measure something, Cecil will ignore results.

I will accept what you find as long as long as the method to
obtain the results is valid.. Roy's earlier measurements are
virtually meaningless since he was measuring standing wave
current which doesn't even flow (phase is constant and
fixed around zero degrees). You guys always seem to
make measurements that support your preconceived
notions and avoid measurements that don't

But you have already started what I am asking, Tom. You
measured a voltage phase shift of 60 degrees through a
100uH coil at 1 MHz. The current is known to lag the voltage
through a coil so the current phase delay is more than 60
degrees. I wouldn't be surprised to see it at 120+ degree
lag in the current. So your own experiment proves you are
wrong. How do you get away with such behavior without
anyone noticing?.

(Hint: there are a handful of knowledgeable lurkers who
have noticed.)

When you measured S12, was the load side of the coil
looking into 50 ohms?

In the web pages I previously posted, R.W.P. King, in
"Electromagnetic Engineering", asserts that you cannot
use a lumped circuit analysis on a coil containing 1/6
wavelength of wire. Your 100uH coil above exhibits
60 degrees of phase shift even for the voltage and that's
1/6 wavelength for voltage - even more for current. The
lumped-circuit model assumes that the voltage is traveling
at an infinite speed, faster than light. Since you believe so
strongly in the lumped-circuit model, wonder why your
measurement didn't reflect that fact? :-)
--
73, Cecil, W5DXP