[amsat-bb] Re: Antenna

Bob Bruninga bruninga at usna.edu
Sun Aug 19 13:43:27 PDT 2012

> Also, I think Bob Brunniga... has documented that 
> 15 deg fixed is the best overall el setting. 

Yep, that puts the main beam on the horizon where you need it most and where satellties spend over 70% of their time.  Even at 15 degrees, you still are within 1 dB of max gain on the horizon.  That same amount of gain covers up to 30 degree too.  And anything above 30 degrees is 6 to 10 dB CLOSER and does not need much gain.  Above 70 degres there begins to be a null, but satellites will be in that null less than 1% of the overall contact time.  


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