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Re: [TowerTalk] low band antenna without good ground

To: Tony Brock-Fisher <barockteer@aol.com>
Subject: Re: [TowerTalk] low band antenna without good ground
From: Michael Goins <wmgoins@gmail.com>
Date: Thu, 22 Sep 2011 19:08:39 -0500
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
You could also consider a half square arrangement.

mike, k5wmg
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On Thu, Sep 22, 2011 at 7:06 PM, Tony Brock-Fisher <barockteer@aol.com>wrote:

>
>
> A delta loop is an antenna for the low bands that has vertical polarization
> but does not need a good ground. An equilateral triangle, apex up, fed 1/4
> wavelength from the top, will give vertical polarization. The bottom leg of
> the delta loop can be only a few feet off the ground, and it provides the
> 'ground return' for the antenna. The impedance of a single loop is around
> 100 ohms and can be matched with an electrical quarter wave of 75 ohm coax.
>
> A pair of delta loops can be phased for gain similar to a four-square. I
> have this antenna for 80 meters with no radials on the ground. Guest ops
> always remark about how well it plays.
>
> -Tony, K1KP
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