[TowerTalk] Folded dipole

Hector Garcia XE2K j_hector_garcia at sbcglobal.net
Tue Aug 25 10:32:49 PDT 2009


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 at verizon.net> wrote:

From: Tom Osborne <w7why at verizon.net>
Subject: [TowerTalk] Folded dipole
To: "Towertalk" <towertalk at 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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