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Re: [TowerTalk] Feeding a Delta Loop

To: "'Tower and HF antenna construction topics.'" <>
Subject: Re: [TowerTalk] Feeding a Delta Loop
From: "Jorge Diez - CX6VM" <>
Reply-to:, "Tower and HF antenna construction topics." <>
Date: Wed, 3 Feb 2010 20:24:57 -0200
List-post: <">>
Hello Stu,

I have delta loops for80 and I notice that work better for DX if I feed in
an angle, for vertical polarization.

It´s not exactly at 1/4wl since when I tie the rope the wire go trough the
insulators, but works anyway.


-----Mensaje original-----
[] En nombre de Stuart Browne
Enviado el: Miércoles, 03 de Febrero de 2010 06:28 p.m.
Asunto: [TowerTalk] Feeding a Delta Loop

I'm looking at installing a Delta Loop for 80 m. on my 75' tower. The low
end of the triangle will be about 20' off the ground ( the tower is on my
rooftop (flat).  I know that the conventional wisdom is a feed point in the
center of the lower side of the equilateral triangle which is around 50
ohms.  ON4UN describes feeding a DL at 1/4 wl from the Apex of the triangle
to achieve a 23 deg take off angle (which is what I'm after).

I'm looking for any "real world" feedback as to the pros/cons of feeding a
DL at the apex, lower center, corner or 1/4wl from the apex.


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