The core problem here is the ham consumer is not being given
compatible and concise data from which to make an informed choice.
There's only one way for antenna ratings and tower ratings to fully
compatible and that's through the "Aa" projected area term in
TIA-222-G. Antennas and towers should be rated like this:
===
TRIBANDER MODEL XYZ
Aa = 11.0 square feet*
* TIA-222-G 100mph wind speed, height 100 ft, Exposure Cat B, Risk
Category I, Topography Cat 1.
CRANK-UP TOWER MODEL ABC
Max capacity Aa = 16.0 square feet*
* TIA-222-G 100mph wind speed, height 70 ft, 75 lbs. weight,
antenna 3 feet above tower top, Exposure Cat B, Risk
Category I, Topography Cat 1.
===
"Aa" provides the "Apples to apples" linkage between tower
and antenna. Maybe that's why they chose Aa as the name of the
term :-)
I have no connection to or business with AN Tower but I commend
them for publishing full and complete 222-G tables for their products. They
rate their towers by Aa square footage.
The industry standards are there. It's a matter of coaxing the
manufacturers of both towers and antennas to label their products
accordingly.
73 Jim K6OK
===
Kurt Andress: "There are basically two types of "Antenna Area"
values to be considered....."
Jim Lux: "Tower mfrs cite a "X square feet" as opposed to
a "X lbs load"
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