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[TowerTalk] TIA/EIA 222-F Antenna Calcs

Subject: [TowerTalk] TIA/EIA 222-F Antenna Calcs
From: Steve Mathias <>
Date: Tue, 25 Jan 2005 10:25:07 -0800 (PST)
List-post: <>
I'm new to the antenna world, and have run into a roadblock as to how to apply 
the 222-F standard to antenna arrays.  I can readily calculate the frontal 
projected area of an antenna, but I'm not sure of how to handle the case where 
there is a 4-around array of elements.  In such a case, do I just take twice 
the side projected area for those two elements facing sideways into the wind?  
What about the element facing downwind - is there some percentage of shielding 
that should be applied to this area, since it is behind the tower?  Or, does it 
contribute the full frontal projected area as well (which would seem wrong)?
It appears as though the standard is quite well suited and comprehensive for 
towers themselves, but that the "appurtenances" section (2.3.10) is pretty 
simplistic and incomplete.  Can anyone point me toward more information on 
this, or someone who might be able to help me, even in a consulting capacity?

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