A two element 40 meter "shorty forty" at 70 feet and up is a fixture
among contesters that can't put up the monsters.
Suggest to any one of them that they should replace it with a
four-square and see what reaction you get.
A forty 4 square is what you do if the shorty forty is out of the
question, and dipoles off the tower at 65 feet mess up the tribander.
73, Guy.
----- Original Message -----
From: "Wes Cosand" <wz7i@arrl.net>
To: <towertalk@contesting.com>
Sent: Friday, October 11, 2002 8:59 PM
Subject: [Towertalk] 40M 4 Sq vs. 2 el Yagi at 70 ft
> K7LXC's recent comment about yagis vs. 4 square arrays got me
> thinking. Has someone done a careful comparison of these two
antennas for
> 40 meters?
>
> I have relocated and have to build a new station and I am torn
between
> these two alternatives. Although performance is important, the
station
> will not necessarily be used for contesting. The initial cost is
not as
> important as reliability and freedom from maintenance.
>
> I have previously had a 40M 4 square that was carefully installed
with the
> DX Engineering phasing network. I was never tremendously impressed
with
> the performance but I never had the opportunity to compare it to a
> yagi. And it certainly didn't require much care and feeding-- it
just worked.
>
> I had decided to replace the vertical array at the new station with
a 2
> element yagi at 70 or 80 feet, perhaps 12 feet above my five band
> beam. But the 40M yagi means that the total installation will be
much
> higher than the 50 or 60 feet tower I could get by with if 20 meters
was my
> lowest freq antenna. The tower and rotor must be significantly
> beefier, and I am concerned that it will add to the maintenance
> needs. (The tower must be self supporting.)
>
> So why did ON4UN's 1998 survey indicate that among the top 100 DXers
who
> responded about 40M antennas, 35% of them used 2 el yagis and only
7% used
> phased verticals? ON4UN said his survey indicated that at that time
> Cushcraft and Hy-Gain 2 element yagis were "extremely popular on
40meters".
>
> Wes, WZ7I
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