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August 10th 09, 01:19 PM
posted to rec.radio.amateur.antenna
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Antenna pattern fro a summit
Hi to all,
NEC gives the pattern for an antenna mounted at a certain height above an infinite flat ground. But suppose that we are on a mountain top (summit) with a relatively steep grade. Does the pattern changes, i,e. is the TO angle going lower above an horizontal line coming from the antenna? If so, is there a kind of 'correcting factor' giving the modified height applicable? |
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