[Antennas] windom coaxial connection

Sat Mar 26 16:21:52 EST 2005

The offset feed dipole, misnamed Windom, has well defined dimensions:
regular half wave at the lowest operating frequency! What makes it special
is that it operates quite well on even harmonics, unlike the classic dipole.
In any case the multiband version should be about 130 ft. the feed point
should be 33% of the antenna's end and the impedance is somewhere from 200
to 400 ohms on the various bands. Hence, a 4:1 balun would do good from the
impedance matching point of view, as well as from the from the elimination
of RF on the cable angle. BTW this variant is known also as the FD4 antenna
and I have quite well written article on it, if you want it.
	Alex	4Z5KS
-----Original Message-----
From: antennas-bounces at mailman.qth.net
[mailto:antennas-bounces at mailman.qth.net] On Behalf Of Harvey&Bessie
Sent: Monday, March 28, 2005 11:42 PM
To: Patrick O'Brien
Cc: antennas at mailman.qth.net
Subject: Re: [Antennas] windom coaxial connection
The original Windom antenna was a half-wavelength wire with a single-wire
feeder tapped 12 to 14 % off the center. Then somebody came up with a
half-wave antenna fed with two wire feeder (open-wire) tapped that same
distance off center and called it a California Windom. 
 I suppose you could use co-ax at that feed point. The coiled coax acts as
a balun to prevent rf current from running down the outside the outer
conductor of the coax. You probably paid too much for 66 feet of wire?
Harvey/W4TG
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