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Old August 14th 06, 12:08 AM posted to rec.radio.amateur.antenna
Cecil Moore Cecil Moore is offline
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First recorded activity by RadioBanter: Jul 2006
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Default Frequency Sensitivity of mobile HF vertical antennas.

Cecil Moore wrote:
Dave wrote:
Or, do you claim the net Z01B + 0.646[Case 1} is now electrically
longer, in degrees, than Z01A + 0.646[case 2]. Why?


I already explained how to prove to yourself why those
two cases are different. Please perform the Smith Chart
gymnastics and then report your findings.


If one takes one foot of stinger and transfers it to the
base element section, the antenna length remains the same
and the resonant frequency increases. I assume you already
knew that. So of course, 0.646 is electrically longer when
it is on top of the coil than when it is on the bottom of
the coil. The Smith Chart exercise will show why that is
true.
--
73, Cecil http://www.qsl.net/w5dxp