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[TowerTalk] 40m 4square - factors relating to gain

To: <towertalk@contesting.com>
Subject: [TowerTalk] 40m 4square - factors relating to gain
From: w8ik@subich.com (Joe Subich, K4IK)
Date: Mon, 12 Nov 2001 23:31:39 -0500

Tom, 

> I would expect, based on what I see here, that on 40 meters a 
> good high dipole could actually be a bit better for gain than a four 
> square.

Since I'm planning an antenna installation I did some modeling of a 
Cushcraft D-40 (half a 402CD) at 60 feet over poor ground (Diel Const 
= 10, Cond = 2 ... sandy Florida soil) vs a four square with 60 
on/in ground radials per element.  The loaded dipole was about 2 dB 
better (at the same take off angle) than the four square (and a full 
size dipole would have been even better). 

The difference is enough for me to decide the four square isn't worth 
the effort on 40.  One of the common loaded/shortened two element yagis 
looks the winner unless one is on an ocean beach.  

73, 

   ... Joe, K4IK 



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