Hi Dan,
Thank you for stating what I did not make clear - that it is the thickness
of the element and not the material used, that determines the bandwidth. I
thought that was obvious, but perhaps not!
However, I was not aware that you could the increase the bandwidth by the 2
wire method that you are referring to. I am going to check out his website
and read that posting. Many thanks for mentioning it! It may provide a
workable solution for the challenges that I have on 80 meters using #13 PVC
wire for the elements!
73
Bob KQ2M
----- Original Message -----
From: "Dan Levin" <djl@andlev.com>
To: <towertalk@contesting.com>
Sent: Thursday, September 18, 2003 12:56 PM
Subject: Re: [TowerTalk] Question on 80M 4-square amongst trees
> Bob wrote:
>
> > You WILL see a significant low-swr bandwidth improvement
> > by using aluminum tubing vs wire. NO COMPARISON! I am
> > all but convinced that the aluminum elements provide
> > better F/B, F/S and forward gain, but I have never modeled that.
>
> Remember, it is the effective diameter of the element that matters,
> not (in this case) the material, or the fact that it is tubing
> vs wire. You can easily increase the
> effective diameter of a wire antenna by simply using two
> (or more) wires that are parallel to each other, spaced apart
> by some distance (say 3-6"), and tied together electrically
> (say with horizontal wires soldered between the two vertical ones)
> every so often (say 3' or so). L.B. Cebik has a nice discussion
> of this on his web site, www.cebik.com .
>
> ***dan, K6IF
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