Thread: Vincent antenna
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Old December 2nd 07, 03:46 PM posted to rec.radio.amateur.antenna
Cecil Moore[_2_] Cecil Moore[_2_] is offline
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First recorded activity by RadioBanter: Mar 2007
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Default Loading Coils; was : Vincent antenna

Gene Fuller wrote:
As far as I can tell, W8JI did not do any math or other type of analysis
to come up with the 3 ns delay. There was some surrounding discussion,
but the delay itself was simply read from an instrument.
So let me repeat my earlier questions.


I previously answered your question in capital letters.

What went wrong? Why is that number incorrect?


This is about the 20th time that I have explained the error
that W8JI made. The signal he used to measure phase shift
didn't possess a phase shift. W7EL made the same mistake in
his "delay through a loading coil" measurements. When the
phase of the total current changes hardly at all from one
end of a 1/2WL dipole to the other, that current CANNOT even
be used to measure the delay through the wire. Why do you,
W8JI, and W7EL think a current with an essentially unchanging
phase can be used to measure phase shift? This is all explained
on my web page.
--
73, Cecil http://www.w5dxp.com