Stuart:
Don't forget to short the unused feed across its insulator at the loop
apex or corner.
73 de
Gene Smar AD3F
----- Original Message -----
From: "Stuart Browne" <stuartpbrowne@gmail.com>
To: "Tower and HF antenna construction topics." <towertalk@contesting.com>
Sent: Friday, February 05, 2010 9:01 AM
Subject: Re: [TowerTalk] 80m Delta loop on 70' tower
> On switching from the horizontal to the vertical polorization, I thought
> that I'd take the ladder line feed from the apex and the feed from the
> corner and run them to an old knife switch that I have, then ladder line
> indoors to a 2:1 Balun...pretty basic, but it should work.
>
> On Fri, Feb 5, 2010 at 6:06 AM, Tony Brock-Fisher
> <barockteer@aol.com>wrote:
>
>> If you feed the loop at the bottom middle, it will be horizontally
>> polarized, and be pretty doggy for DX because of it's low height above
>> ground.
>>
>> If you feed it 1/4 wave down from the top on one side, it will play much
>> better for DX because it will act like a pair of phased verticals.
>>
>> Neat thing is as a vertical it needs no radials - the bottom leg acts as
>> a
>> counterpoise.
>>
>> >From a 70' tower, rig a 20' crossarm to support the tops of a pair of
>> loops, and feed them simply with 75 ohm coax for matching/loading, as in:
>>
>>
>>
>> http://www.cebik.com/content/a10/wire/hsyg.html
>>
>>
>> This is a kick butt antenna, I claim as good as a 4-square, just lacking
>> the ability to switch in as many directions. I have mine set up pointing
>> at
>> EU one way, covers most of the US the other way for SS...
>>
>> This is such a great antenna I gave mine a rebuild after 10 years.
>>
>>
>> -Tony, K1KP
>> _______________________________________________
>>
>>
>>
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