[TenTec] Re: Resonant antennas

[denton]

um-mmmmm...define "damn good tuner" please...have ample junquebox, will 
homebrew....

----- Original Message ----- 
From: "Jim Brown" <jim at audiosystemsgroup.com>
To: <tentec at contesting.com>
Sent: Saturday, September 04, 2004 9:55 PM
Subject: [TenTec] Re: Resonant antennas


> On Sat, 04 Sep 2004 12:01:52 -1000, Ken Brown wrote:
>
>>While there may be some reasons that it is "nice" or "convenient" to
>>have antennas resonant, it is absolutely not necessary. I does not even
>>make them work better in some instances, or significantly better in most
>>instances.
>
> I'm not so sure about that, Ken, even though I've read that statement in a 
> bunch of
> places from folks who considered themselves "authorities."  I have an 
> 80/40
> dipole up about 45 ft fed by some old (but new in my basement) Belden 72 
> ohm
> KW twinlead. It works beautifully on 80 and 40, and I've used it 
> successfully on 30
> meters as well, even though it is nowhere near resonance on that band. 
> BUT:
>
> Example #1: A few weeks ago, I strung a resonant half wave 30 meter dipole 
> with
> one end lying in a big evergreen tree at about 30 feet, and the other end 
> tied to a
> guy rope that runs down to a fence in my front yard. The bottom of the low 
> leg is
> about 15 ft off the ground. This 30m "dipole" forms an included angle of 
> roughly 90
> degrees, the the center of the vee pointing a bit north of east.  In other 
> words, it is
> far from ideal, but it is resonant. In most directions, it blows the pants 
> off the 80/40
> dipole (which is much more in the clear and at least 18 ft higher).
>
> Example #2: My friend KK9H told me had just added a parallel 30 m resonant
> element to his 80/40 trap dipole. He reports that the antenna now radiates 
> far
> better than it did without the 30m element. And yes, he was using a damn 
> good
> tuner with it.
>
>
> Jim Brown  K9YC
>
>
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