Hi Tom
Few years ago a made a loop antenna based on the idea of the folded dipole,
my antenna was installed for the short range communication like you mention ,
in this case the CA and NW of Mexico.
The antenna was facing NW and SE, hanging in between 2 of my towers at 47ft
the highest point
the loop was in a rectangular shape, 60ft the horizontal aprox. and 10ft
vertical, using the 4:1 balun at the bottom side to feed , my SWR was below
1.5:1 in the lower part of the 40m.
also works fine on 20 and 10m , 15m need tuner., great RX antenna for 80 and
160 some times fo fight my very high Noise
For my need was great this antenna, but was removed because was located very
close to my NEW Cubical Quad and increase my SWR on the Quad at several
directions like Pacific and Africa. something like 1.3 make the jump to
2.5:1
have no technical details just the experience to share and will be my choice
for what you want.
J. Hector Garcia XE2K / WT6J
Mexicali B.C DM22fp
P.O.Box 73
El Centro CA 92244-0073
USA
http://www.xe2k.net
http://www.dxxe.org
--- On Mon, 8/24/09, Tom Osborne <w7why@verizon.net> wrote:
From: Tom Osborne <w7why@verizon.net>
Subject: [TowerTalk] Folded dipole
To: "Towertalk" <towertalk@contesting.com>
Date: Monday, August 24, 2009, 7:22 PM
Hi All
Looking to put up another 40 meter antenna. Need a NVIS antenna for
close-in work.
Is there any reason to put up a folded dipole instead of a tuned-feeder
dipole?
I think when this antenna was popular, it was touted to have more bandwidth
than a dipole. But, if you have to use an antenna tuner to tune it anyway,
there doesn't seem to be any advantage over a regular antenna, bandwidth
wise. 73
Tom W7WHY
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