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Old May 17th 07, 07:30 PM posted to rec.radio.amateur.antenna
Jim Kelley Jim Kelley is offline
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First recorded activity by RadioBanter: Jul 2006
Posts: 666
Default Phase Shift through a 75m Texas Bugcatcher Coil

Cecil Moore wrote:
Jim Kelley wrote:

It's clear that you are still back at that question. That doesn't
necessarily apply to everyone else though. What I would suggest is
that you go back, re-read, and try to undertstand the post, in
particular the parts you deleted.



What's to understand? If the measurements are not made
at the operating frequency, there is no way to prove
that they are valid.


It appears that you would benefit from an understanding of the
spectral nature of broadband pulses.

Both the velocity factor and the characteristic
impedance of a loading coil change dramatically
with frequency.


What is wrong with using a sinusoidal traveling
wave to measure the phase shift through a coil
at its frequency of operation?


You need to be able to demonstrate that attaching a load resistor to a
standing wave antenna in order to turn it into a traveling wave
antenna does not dramatically change the characteristics.

73, Jim AC6XG