It can tell you how each antenna will do individually but does not calculate
the combined patterns exactly.
73 John N5CQ
-----Original Message-----
From: TowerTalk <towertalk-bounces@contesting.com> On Behalf Of David Gilbert
Sent: Tuesday, June 21, 2022 1:01 PM
To: towertalk@contesting.com
Subject: Re: [TowerTalk] Stacking Tribanders
HFTA should never be used to try to optimize stacking distance. It simply does
not actually calculate the stacking gain as a function of stacking distance
like EZNEC would.
73,
Dave AB7E
On 6/21/2022 10:34 AM, sawyered@earthlink.net wrote:
> HFTA kinda sorta calculates stacking properly. It seems to assume you
> get the optimum 2.7db stacking gain whether the spacing is optimum or
> not. And it draws the HFTA ray from the center point between the 2.
> So it would calculate a 2 high stack of 20M yagis having an added
> 2.7db of gain even if they are stacked only 20 ft apart and will draw
> the enhanced ray from the midpoint between the 2 yagis.
>
>
>
> Ed
>
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