[TowerTalk] Model This NVIS

[David Jordan]

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...

73,
Dave
wa3gin