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[TowerTalk] Interlacing 2M elements on 6M yagi boom

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Subject: [TowerTalk] Interlacing 2M elements on 6M yagi boom
From: "Bill VanAlstyne W5WVO" <>
Date: Thu, 19 Jan 2006 09:47:45 -0700
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I have an 18-ft 5-el 6M yagi (two of them stacked, actually). This system is an 
excellent performer, and I don't want to screw it up... BUT, I'd sure like to 
interlace a couple small 2M yagis with the 6M elements on the same booms. 
Feeding the 2M DEs separately from the 6M DEs is fine. The spacing between the 
yagis on 6M is fairly close (half a wavelength), so the 2M spacing will be 
about 1.4, not at all a bad number. I know I am going to have to get into EZNEC 
to learn how to model this kind of arrangement, but I thought I'd ask first -- 
is this feasible? Is it a good idea? Am I just asking for more headaches than 
it's worth? Since these antennas are on a guyed rotating mast on a 4-ft roof 
tower, I don't want to add any more weight and wind load to the system that I 
have to; otherwise, I'd just put a pair of stand-alone 2M yagis between the 6M 
ones. Ideas, opinions?

Bill / W5WVO

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