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Effect of raising vertical antenna higher
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March 4th 07, 01:09 PM posted to rec.radio.amateur.antenna
Dave Oldridge
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First recorded activity by RadioBanter: Jul 2006
Posts: 234
Effect of raising vertical antenna higher
wrote in news:1172794335.616945.165990
@n33g2000cwc.googlegroups.com:
On Mar 1, 9:12 am, Buck wrote:
However, Steppir antennas says
that an antenna on the ground needs 120 radials just to match one in
the air with two radials.
That would only apply to an elevated antenna 1/2 wave or higher up
though..
Actually, it need not be that high. Just decoupling an antenna from a
less-than decent ground will improve its gain. The ideal height for a 20m
antenna would be about 8m. Of course if you can put it up at ANY height,
then go for the 100m plus range, but if you can afford the hardware for
that, you can also afford the hardware to stack two beams!
--
Dave Oldridge+
ICQ 1800667
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