Also, I think the typical four-square design that is used actually acts like
three elements. It radiates in the directions of the "corners," not the
flat sides, with what becomes then, the middle two verticals acting like one
vertical, electrically. I think thinking of them as reflectors isn't quite
how it works. All the verticals are fed, but in a phase relationship such
as to maximize the radiation in the chosen direction. They are typically
switchable in the four "diagonal" directions.
73 - Rich, KE3Q
----- Original Message -----
From: "ABowenN4OO" <abowen@nettally.com>
To: "Ron Feutz" <feutz@wctc.net>
Cc: <towertalk@contesting.com>
Sent: Monday, February 21, 2005 7:16 AM
Subject: [TowerTalk] Parasitic 4-square for 40 meters
> I assume that you are speaking of a vertical parasitic array which will
> cover 4 directions.
>
> You will find a discussion of such arrays and the requirements for proper
> operation in ON4UN's, Low Band DXing, Chapter 13, paragraph 3.9. Note that
> the ground radial requirements are quite stringent, which may explain why
> most operators opt for current forced, driven arrays.
>
> Driven arrays are covered in chapter 11 of the same book.
>
> INK N4OO
> ======================================================
>
>
> At 10:29 PM 2/20/2005 -0600, Ron Feutz wrote:
>
> > >I have everything I need for a parasitic 40 meter 4-square but can't
> > >find
> > >design info.
> > >
> > >I want to try this antenna as my marginal cost will be zero. I have 4
> > >33'
> > >verticals, an Ameritron RSC 8-V switch and plenty of radial wire and
> > >coax
> > >on hand.
> > >
> > >Any info on design and tuning will be appreciated. I believe the
> > >design
> > >has 3 "reflectors" that use the inductive reactance of the open
> > >feedline to
> > >make them "reflectors," right. How long should the feedlines be? I
> > >can
> > >tune with the MFJ 259B.
> > >
> > >Any models out there to tell me what to expect?
> > >
> > >Archive and google search turned up nothing.
> > >
> > >73,
> > >
> > >Ron KK9K
>
>
> _______________________________________________
>
> See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
> Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with
> any questions and ask for Sherman, W2FLA.
>
> _______________________________________________
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>
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
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