[Antennas] CAROLINA WINDOM???
Gene Mason
kz5v at hotmail.com
Sat Feb 12 16:51:16 EST 2005
Sir Simpler is always best !
ARRL has several good books on DX antennas.
Any vertical 1/4, 5/8's or 1/2 wave will out perform most
horizontal antenna's on any given band opening. Phase two of them or
4 of them in a 4-square configuration or listen to the big signals on
75m dx window any evening, An evening of reading the ARRL antenna
Compendium, Vol 6, specifically the article about the performance of
the verticals on the beach will make a believer out of most open
minded purists. Tom Shiller ( Force -12) points out the model results
and the actual contest performance results of how 4 verticals
outshine a 4 element beam at 200 ft. (A 1/2 wave vertical does not
require any radials) My 1/2 wave 40m vertical is 24 ft tall total,
yes it has a coil in the center, but is measured at 92 % efficiency.
If you get real brave , search the Internet for Cebik's website and
read the section on wire arrays. a bobtail curtain, sterba curtain,
Bruce Arrays are discussed in detail. Most or all of the wire arrays
can be used on all bands, with a little compromise, yet effective.
My recommendation, invest in a MFJ antenna analyzer, a few good
books, a 30$ 500' spool of stranded wire #14AWG, from Home Depot or
Lowes, a 4:1 balun and 100' of RG11 or RG 8 X. Turn your radio off for
a few evenings, and read the results of modern day technical Giants
dedication to scientific principles. Then string up an array of your
choice about the total length of a 80m dipole and hold on to your
chair, turn your radio back on, and listen to signals 10 db stronger
than you have ever hear them, and compete with the big linears and big
towers, much to your surprise , only exceeded by theirs !
GooD DX
KZ5V
From: fkamp at comcast.net
To: w2yj at highstream.net
CC: antennas at mailman.qth.net
Subject: Re: [Antennas] CAROLINA WINDOM???
Date: Thu, 10 Feb 2005 09:17:27 -0600
w2yj at highstream.net wrote:
>
> Anyone have any experience using a Carolina Windom? I do a lot of
DX'ing and am
> considering this make of antenna as it has a vertical radiation
section for low
> angle radiation.
> My other choice is a 80, 40 trapped sloped dipole.
> At present I use a 270 foot flat-top fed with open wire feeders for
the low
> bands and a StepIR 3 element beam for 20 through 10.
George,
I have used a windom. It probably did have some vertical radiation
from
the feedline but I would not consider its performance superior to the
80/40 trap dipole I now use. I would not consider either of these
antennas particularly suited for serious DX work.
I would also think that a 270 foor flat-top dipole would beat out both
antennas for DX performance if the flat top is at a decent height.
My best, wire, DX antenna is a 40 meter right angle loop. Apex up at
50
feet with base at about 15 feet.
Regards,
Frank Kamp
K5DKZ
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