Given how much you already have 'up', I suspect you can readily install an
'Extended Double Zepp' (EDZ) which is a single wire antenna that will give
theoretical gain of 3 DBd with broadside radiation patterns similar to a
dipole. A single band version is described in the ARRL's "Wire Antenna
Classics" (pages 4-3 thru 4-6) and in the ARRL's "More Wire Antenna Classics
Volume 2" (pages 5-1 thru 5-7). The theory is addressed in the ARRL's
"Antenna Book", 19th Edition (pages 8-35 thru 8-39).
Personally, I am thinking of trying the single wire, multiband, coax fed
version of the EDZ for 10/15/20 named the EXJAY that is described in the
book "The Antenna File" (pg 15-17) published by the Radio Society of Great
Britain (and sold by the ARRL). The author had a similar environmental need
and details several other antennas he built before settling in on this
single wire antenna. It is about 90 feet or so in length and, if you want
the full benefit of its gain, should be mounted horizontally at a height of
30 feet or more.
Regards
Jim Shaw, WA6PXU
WA6PXU@ARRL.net
408-973-1608
From: "Bill Axelrod" <bill@axelrods.org>
To: <Towertalk@contesting.com>
To: <towertalk@contesting.com>
Date: Sun, 31 Mar 2002 21:37:27 -0500
Subject: [Towertalk] Antenna choices in a restricted neighborhood
I'm looking to tap the collective wisdom of this group. I live in an
antenna restricted neighborhood. (Please no flames - there are real reasons
why some of us live like this) While transmitting antennas are not allowed,
I have been able to put up two - a Gap Titan and a G5RV as an inverted Vee
with the apex at 36 ft. My back yard is rectangular, about 95 feet by 40
feet. The vertical has been up for about 7 years so I figure I'm pretty
safe from the Antenna Police.
While I've done marginally well with this setup (~285 countries and DXCC on
all bands 80 through 10), I know my set up is far from optimum. I want to
do better. Short of putting up a tower and beam which surely would attract
the Antenna Police, I'm looking for ideas on what I could do to get the best
antennas I can in my available space and within the restrictions given.
That limits me to two ~36 ft support poles and two PCV pipes at 10 ft
holding the ends of the Vee (similar in visibility to what I have now).
I'd like to avoid (or minimize) the use of a tuner to aloow quick QSYs.
Now, I use the Gap from 40 to 10 and keep the Vee tuned to 80 meters. Cost
is not the limiting factor.
I would appreciate any ideas the group may have.
Thanks and 73... Bill K3WA bill@axelrods.org
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