The second layout would give you a slightly narrower, taller pattern than
the first. I remember a local using 160 elements on 144 for his EME array.
It covered a lot of real estate but worked very well. I don't think the
gain was much different than 4 long yagis though.
Danny NG9R
----- Original Message -----
From: "David Vondrasek" <n5ito@davidv.net>
To: <vhfcontesting@contesting.com>
Sent: Tuesday, September 16, 2003 6:20 PM
Subject: [VHFcontesting] 432 collinear array setup
> At the moment I am building a array of DX-420 collinear antennas. I have
4
> each of the DX-420s (20 ele) Giving me 80 elements. At present I have an
> frame that stacks them as such..
>
>
> ____ ____
> __|__ __|__
> __|__ __|__
> __|__ __|__
> ____ ____
> __|__ __|__
> __|__ __|__
> __|__ __|__
>
>
> A bay of 4 antennas, with a height of around 9 feet, about 5 feet wide on
2
> cross booms, one at the center, and one across the bottom area. I didn't
> see a need for a 3rd across the top as the arrays are small and not much
> wind load. the bottom give it a little more stability and keeps the 2
> stacks in line with each other. While standing back and looking at it. I
> had thoughts of running them side to side instead.. Such as this
>
> ____ ____ ____ ____
> __|__ __|__ __|__ __|__
> __|__ __|__ __|__ __|__
> __|__ __|__ __|__ __|__
>
> This would give them less height while on top of the 60 foot tower and
> cause less strain on the hazer,rotor,thrust barring, etc I assume..
Anyone
> have comments on the alternate layout ? Pros, cons ? Suggestions ?
>
>
> One another note, I have 80 eles for 220mhz also that I have no use for
and
> had thoughts of converting them to 432 mhz ( to small for 144) this would
> give me 160 eles on 432 to play with. This would most defiantly have to
me
> a 4X4 stack I assume..
>
>
> Dave
> N5ITO
> The 144 array is next.....
>
>
>
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>
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