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[Towertalk] 40M 4 Sq vs. 2 el Yagi at 70 ft

To: <towertalk@contesting.com>
Subject: [Towertalk] 40M 4 Sq vs. 2 el Yagi at 70 ft
From: llindblom@juno.com (Larry L Lindblom)
Date: Sat, 12 Oct 2002 19:38:49 +0000
Center of the lazy vees were about 90 ft.  Since then 2 more TH-7s were
added to the tower with the 4 square dropped  lower and the centers only
about 30 feet.  No major difference in performance.


On Sat, 12 Oct 2002 14:53:58 -0400 "Guy Olinger, K2AV"
<k2av@contesting.com> writes:
> Just for clarity, what you described is not a 4-square in the 
> ordinary
> sense. The current maximum in your conductors is many feet off the
> ground. (How high was the center of the lazy vee dipoles?) A typical 
> 4
> square has the current max right at or a few feet off the ground. 
> If
> the centers were 70-100 feet, it WOULD play like a 2 element shorty
> forty.
> 
> A bit of apples vs. oranges here.
> 
> 73, Guy.
> 
> ----- Original Message -----
> From: "Larry L Lindblom" <llindblom@juno.com>
> To: <k2av@contesting.com>
> Cc: <towertalk@contesting.com>; <wz7i@arrl.net>
> Sent: Saturday, October 12, 2002 10:38 AM
> Subject: Re: [Towertalk] 40M 4 Sq vs. 2 el Yagi at 70 ft
> 
> 
> > A couple years back I had an M2 2-el 40 on tower #2 at 128 ft and 
> a
> lazy
> > vee vertical dipole 4 square for 40 meters on tower #1 below a 
> TH-7
> which
> > was at 123 ft.  In A/B comparisons there was no clear winner 
> between
> the
> > two 40 meter antennas.  Which of the antennas was "slightly 
> better"
> than
> > the other varied from night to night or the path involved.
> >
> > Of course everyone on the reflector with a 2-el 40 told me there
> must be
> > something wrong with mine.  But, none of those comments seemed to 
> be
> > based on those people doing an A/B comparison.  In the end maybe 
> it
> > simply proved on can never have too many antennas on any band!
> >
> > 73
> >
> > W0ETC
> >
> >
> > On Fri, 11 Oct 2002 22:40:34 -0400 "Guy Olinger, K2AV"
> > <k2av@contesting.com> writes:
> > > 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
> > > > _______________________________________________
> > > > AN Wireless Self Supporting Towers at discounted prices,
> > > > See http://www.mscomputer.com
> > > >
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> > > >
> > >
> > >
> > > _______________________________________________
> > > AN Wireless Self Supporting Towers at discounted prices,
> > > See http://www.mscomputer.com
> > >
> > > Wireless Weather Stations now $349.95. Call Toll Free,
> > > 888-333-9041 for additional information.
> > > _______________________________________________
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> > >
> > >
> > _______________________________________________
> > AN Wireless Self Supporting Towers at discounted prices,
> > See http://www.mscomputer.com
> >
> > Wireless Weather Stations now $349.95. Call Toll Free,
> > 888-333-9041 for additional information.
> > _______________________________________________
> > Towertalk mailing list
> > Towertalk@contesting.com
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> >
> 
> 
> _______________________________________________
> AN Wireless Self Supporting Towers at discounted prices, 
> See http://www.mscomputer.com 
> 
> Wireless Weather Stations now $349.95. Call Toll Free, 
> 888-333-9041 for additional information.
> _______________________________________________
> Towertalk mailing list
> Towertalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
> 
> 

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