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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 |
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