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Old April 8th 07, 04:32 AM posted to rec.radio.amateur.antenna
Owen Duffy Owen Duffy is offline
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First recorded activity by RadioBanter: Dec 2006
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Default Constructive interference in radiowave propagation

Walter Maxwell wrote in
:

is correct. Please review the QEX article I referenced above to see
it. With all due respect, Owen, I believe you have misunderstood, or
perhaps misconstrued the procedure I presented. Would you please
review it again to see where you might have gone wrong?


Hi Walt,

I have reviewed Chapter 3 of Reflections II which you kindly sent me. I
think it contains the deveopment to which you refer.

It seems to me that Chapter 3 depends entirely on an assumption that the
phase relationship of the current and voltage of a travelling wave is 0 deg
or 180 deg, depending on the direction. This only holds true for lossless
lines and distortionless lines, and so the "proofs" developed in the
chapter are not general proofs. For example, the proof that reflected power
is purely real and of magnitude |E-|^2/Zc is not developed for the general
case, and happens to not be correct for the general case.

Owen