[Date Prev][Date Next][Thread Prev][Thread Next] - [Date Index][Thread Index][Author Index]

Re: fixed elevation.



KA2AEV said ...

>Whats the accepted elevation for fixed?
>Sounds like something to try instead of using my omni antennas!.
>
>73 de Mike
>KA2AEV
...........................................................................................................................

Mike,
       It depends on the vertical radiation angle of the aerial you're 
using.

With an angle of 30 degrees at the half power points a good compromise is to 
fix it at 25 degrees elevation. Remember ... LEO's spend 70% of their time 
below 65% elevation.

More than 6 elements is not! recommended for fixed elevation installations, 
the horizontal beamwidth will be too sharp. Less elements = broader 
beamwidth ... (and lower gain) ...
"horses for courses" Mike.

73 John    <la2qaa@amsat.org>


_______________________________________________
Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb



AMSAT Top AMSAT Home