[Elecraft] Question about vertical and radial placement
Leigh L. Klotz Jr WA5ZNU
Leigh at WA5ZNU.org
Sun Feb 14 21:17:28 EST 2010
Contrary to expectations, your radials need not go anywhere near the ground.
If your antenna is on the roof then your radials should start at the feed
point and remain horizontal, and stay on the roof. They don't need to go
down to the ground and so they won't be visible (at least not compared to a
44ft vertical!). So you might be able to solve your aesthetics problems and
get good antenna performance with "elevated radials." Two per band would be
a minimum, and more would be better, but you don't need 160 of them!
There's a good article in QST this month on ground radials and elevated
radials and what works best, based on actual tests. But first, you might
want to read a bit on the issue of ground and vertical antennas; getting the
wires to the earth isn't important. (Though you do need some sort of
lightning protection which would likely involve that, perhaps by running
your coax down to the ground and putting a lightning device there.)
Leigh/WA5ZNU
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