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Subject: Stacks
From: (Frank Donovan)
Date: Tue, 18 Feb 1997 07:16:14 -0500 (EST)
Hi Dick!
I'd suggest you use EZNEC to try some stacking alternatives!  EZNEC is
inexpensive and easy to use.  I use the following heights for my two Yagi

40M: 3 element full size Yagis on 48 foot booms at 100 and 190 ft
20M: 5 element Yagis on 48 foot booms at 50 and 100 ft
15M: 6 element Yagis on 48 foot booms at 45 and 90 ft
10M: 6 element Yagis on 36 foot booms at 35 and 70 ft

Height and spacing depend on the elevation angles desired and the size of
the antenna.  Ideally the bottom antenna should be at half the height of
the upper antenna.  A little time with EZNEC will demonstrate these


On Mon, 17 Feb 1997 wrote:
> When you wrote the note did you have heights in mind, such as: 1.0 and
> 1.5 wavelengths.....or .5 and 1.0?  If you had to pick your favorite
> heights for a 2-Stack what wavelengths would they be?
> Thanks, Dick-K9OM,

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