So, if the loop is big enough, and has the right angles, it becomes a useful
DX antenna ? The next question would have to be: How do you work out the
required angles ?
I was just wondering what kind of wire antenna for DX might be useful if I
put up poles at the 4 corners of an acre of land.
73s Tim EI8IC
----- Original Message -----
From: "Tom Rauch" <w8ji@contesting.com>
To: "Tim Makins, EI8IC" <contesting@eircom.net>; "TowerTalk"
<towertalk@contesting.com>
Sent: Sunday, August 15, 2004 11:12 AM
Subject: Re: [TowerTalk] Horizontal Loops
> > If a folded dipole performs like a normal dipole, why
> doesn't a horizontal
> > loop perform like a rhombic ?
>
> Because a Rhombic is diamond-shaped uni- or bi-directional
> antenna normally more than 2 WL on a leg and has the angles
> adjusted so the lobes from all four sides align at a low
> wave angle.
>
> A loop generally has no particular adjustment of angles or
> length.
>
> A Rhombic also has very poor efficiency along with many
> spurious lobes, and so is not really a very high gain
> antenna for the physical area. The big Rhombic at ARRL HQ
> for example was reported to have about the same signal as a
> three element monoband yagi. They do however produce useable
> patterns over very wide bandwidths.
>
> 73 Tom
>
>
> _______________________________________________
>
> 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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