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Cecil wrote,
Tdonaly wrote: Cecil should read before he thinks. Tom, why do you require 6 decimal point precision out of a ballpark rule-of-thumb estimate? The maximum reactance point of a thin-wire dipole is in the neighborhood of the maximum reactance point of the SWR circle as proved by the graphs in the ARRL Antenna Book CD. The maximum reactance is approximately equal to 1/2 the maximum resistance. The resistance at the maximum reactance point is approximately equal to 1/2 the maximum resistance. If someone carries those ballpark concepts around in his head, he will be reasonably close to reality. It's all cut-and-try after that. Cecil, I know you have the Balanis book and that you even took a course from the great man, himself. You can crack the book and look at the curves as well as anyone can. You can also read the rest of the explanation, and, with a lot of work, puzzle it out and improve your understanding so you don't have to rely on rules of thumb that get you into arguments like this. Exactly what agenda forces you to sacrifice your reputation trying to find some unusual esoteric exception to my statements? (Never mind, I already know the answer.) I don't have a reputation. If I did it wouldn't mean anything to me anyway. Balanis is hardly an "unusual esoteric exception." If you think I have an "agenda" you're letting your paranoia get the better of you. (No, I'm not looking for a job on Kerry's campaign committee.) -- 73, Cecil http://www.qsl.net/w5dxp 73, Tom Donaly, KA6RUH |
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