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[TowerTalk] Model This NVIS

To: <>
Subject: [TowerTalk] Model This NVIS
From: "David Jordan" <>
Date: Tue, 20 Nov 2012 20:48:15 -0500
List-post: <">>
Hi Folks,

Jamaca NVIS... 

-    four driven elements fed in phase (70ft ea) spaced 70ft apart, 18ft AGL
-    four reflectors 5% longer buried just below the earth
-    four directors 5% shorter, 45ft AGL

A cloud warmer with gain?  On air comparisons with a dipole at 55ft.  Most 
stations within 300 miles abt 20db stronger (using calibrated attenuator) 
depending on F2 layer conditions.

I wonder what the computer modeling programs would predict?  I don't have one 
to try...


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