Pete,
If I understand your question correctly, there is no limitation of 3dB gain
in stacking vs non-stacking.
This is because high angle radiation and other radiation that was previously
*not* included in the "before" gain (such as side lobes), are now possibly
included in the "after" calculation and the result may be greater than 3dB,
sometimes much greater. That's the **magic** of stacking!!
Note: I said "possibly". That catch-all is why it's not a fixed dB gain,
but depends on the antennas in question and the stacking distances and
heights.
Bill, N3RR
----- Original Message -----
From: "Pete Smith" <n4zr@contesting.com>
To: <towertalk@contesting.com>
Sent: Friday, March 22, 2002 9:51 AM
Subject: [Towertalk] limitations of stacking
> Is there a theoretical reason why the gain resulting from stacking two HF
> yagis over real ground is limited to 3 dB? I have a model of two C-3Es
> that shows 3.5 dB increase over a single C-3E in the top position. I'm
> trying to figure out if this is a modeling anomaly of some sort...
>
> 73, Pete N4ZR
>
> Check out the World HF
> Contest Station Database at
> www.pvrc.org
>
>
>
>
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