[amsat-bb] Re: satellite antenna
bruninga at usna.edu
Tue Apr 24 14:16:46 PDT 2012
> any one have a good idea for a omni directional antenna for the birds?
3/4 wave vertical. Has almost 7 dBi gain above 30 deg.
For 70cm downlinks, this means a 19.5" vertical over a ground plane. Also
is a perfect 1/4wave on 2 meters.
It's the yellow curve on the plot about 80% down this page:
Sent via AMSAT-BB at amsat.org. Opinions expressed are those of the author.
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