Originally posted by golfnut
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But using a different IF frequency to beat against (if I understand what you mean): it seems it would be even harder to detect the phase shifts due to targets. It would be good for frequency modulation of the TX signal, but targets are not supposed to do that (although they probably do -- but probably hard to discriminate effect of small ferrite vs large conductive, etc.).
Good stuff to think about though.
-SB
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