How can it be a "full wave loop" on 80 meters if
there is a break with an insulator on the bottom ?
----- Original Message -----
From: "N7mal" <firstname.lastname@example.org>
To: "Wilson Lamb" <email@example.com>;
Sent: Wednesday, February 03, 2010 6:26 PM
Subject: Re: [TowerTalk] Delta Loop Feed
> Here's what I use: It is an 80M delta loop fed
> at the TOP with 600 ohm open
> wire line. It is an 'open' loop, in other words
> there is an insulator in the
> center at the bottom. This antenna
> mathematically is a 1/2 wave on 160M, a
> full-wave loop on 80M, a 2 wave loop on 40M.
> I don't believe in modeling antennas. If you put
> up an antenna and it works
> leave it up. This antenna has been up more than
> 5 years. If an antenna
> doesn't work take it down and try something
> else. Computers don't work DX,
> my station works the DX.
> Best 73
> p.s. I've tried feeding it at the bottom in the
> center, and I've tried
> feeding it at a corner, I finally settled on
> feeding it at the top.
> BULLHEAD CITY, AZ
> Everyone in the world is
> entitled to be burdened
> by my opinion
> ----- Original Message -----
> From: Wilson Lamb
> To: firstname.lastname@example.org
> Sent: Wednesday, February 03, 2010 22:32
> Subject: [TowerTalk] Delta Loop Feed
> I have no good experience and haven't modeled,
> BUT we did put up a 40m delta
> at FD one yr.
> It was an interesting exercise.
> We left the wire free to run at the corners,
> connected an analyzer, and slid
> the wire around until we got a match. Sho 'nuf,
> perfect 1/1. As I recall,
> the feed ended up near one corner.
> We made lots of contacts and rarely had to call
> twice, even in FD condx!
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