Mike Coslo wrote:

Cecil Moore wrote:
Therefore, radar cannot work since it relies upon reflected
joules/second. Mirrors also cannot work since there is an ExB
amount of power in those reflections.

I made note of this in a thread I just started. Is this a good
analogy? Certainly the signal goes out, hits something and then comes
back. Wouldn't this scramble the signal by some definable amount in an
antenna?

Of course, but the point is that there exists energy as power, ExH,
in the reflected wave. If there is no energy in a reflected wave,
radar wouldn't work. Anyone who says there is no energy in a
reflected wave is just pulling your leg.

Assume a one second long lossless unterminated transmission line.
Pour 1000 watts into it for one second. During the next second, we
disconnect the line from the source and you grab the two wires, one
in each hand. Then tell us whether reflected power exists or not.

At any rate, the answer should be pretty easy to verify by using a
very long but practical sized antenna. Anyone done that?

Anyone who has ever used a TDR on a mismatched transmission line.
--
73, Cecil http://www.qsl.net/w5dxp



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