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Old April 1st 06, 07:40 PM posted to rec.radio.amateur.antenna
Cecil Moore
 
Posts: n/a
Default Current through coils

wrote:
I was complaining about him altering the coil I measured and altering
the context of what I say.


I was doing it from memory, Tom, which may be faulty. As I
remember, you coil was 2" dia and 100 turns at 8 TPI. If
that's not right, what was it?

http://www.w8ji.com/agreeing_measurements.htm
Roy's first. You're way down the list Gene. Get back in line.


Telling Roy about his abortive use of standing wave current
phase to try to measure phase shift when there is zero phase
shift in a wire or in a coil is just stating the technical facts.

As far as measuring phase through a coil goes, neither you
nor W7EL has any clue as to how to make valid measurements.
You guys really need to listen to Gene Fuller who said:

Regarding the cos(kz)*cos(wt) term in a standing wave:

Gene Fuller, W4SZ wrote:
In a standing wave antenna problem, such as the one you describe, there is no
remaining phase information. Any specific phase characteristics of the traveling
waves died out when the startup transients died out.

Phase is gone. Kaput. Vanished. Cannot be recovered. Never to be seen again.

The only "phase" remaining is the cos (kz) term, which is really an amplitude
description, not a phase. The so-called "phase reversal" in longer antennas is
not really about phase either. It is merely a representation of the periodic
sign reversal seen in a cosine function.


What is it about Gene's posting that you and W7EL don't understand?
--
73, Cecil http://www.qsl.net/w5dxp