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Hello,<br>
<br>
I'm about to start measuring the vertical radiation patterns of the
sector antennas here. But before I start that exercise, I thought
it'd be good to understand the vertical radiation requirements
first! To this end, I've updated the <a
href="https://www.hamwan.org/t/tiki-index.php?page=Radio+Frequency+Engineering&structure=HamWAN">Radio
Frequency Engineering</a> page with a semi-bogus example (does not
account for ground elevation at the client side) between Cougar Mtn
and Paine Field. From the example, I also outlined a procedure for
sector alignment to achieve the correct radiation pattern in the
real world.<br>
<br>
Any comments or suggestions for improvement? Seeing the actual
geometry is kind of startling.<br>
<br>
I think it'd be helpful to translate and import the actual sector
antenna radiation pattern readings being done in the lab to Radio
Mobile .ant files and simulate coverage based on real topographical
data. Anyone feel like writing the conversion software, or is
familiar with .ant file format? I don't think it's possible to feed
it 3D radiation patterns, but at least AZ/EL single polar scans
should give something useful.<br>
<br>
--Bart<br>
<br>
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