[amsat-bb] Polarity

Robert Bruninga bruninga at usna.edu
Sat Jan 9 17:05:32 UTC 2016

> We all know that [matched polarity] = Zero db loss from cross
> And then in theory, the "Infinite loss"  when cross polarized...
> [Pracically],it's more like 30 to 40 db or so [ or much less in the
presence of reflections]
> Now does anyone know of a chart ... for every degree of something really
> Like 45 deg is 3 db down,  50 deg =? 55 deg =?  etc.

The cosine table works for all angles..  The cosine of 45 degrees is 1/2
which is -3 dB etc...

Bob, Wb4APR

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