A 4 to 6 wire cage 12" in diameter will cover the full band with low VSWR.
I believe you operated a station with a 2 el 75-80M setup that way many
years ago.
----- Original Message -----
From: "Robert Shohet" <kq2m@earthlink.net>
To: <towertalk@contesting.com>
Sent: Thursday, September 18, 2003 1:13 PM
Subject: Re: [TowerTalk] Question on 80M 4-square amongst trees
> 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
>
>
> _______________________________________________
>
> See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any
questions and ask for Sherman, W2FLA.
>
> _______________________________________________
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_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
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