[aprssig] Latest on UIVIEW/GO-32/D7
Robert Bruninga
bruninga at usna.edu
Tue Oct 16 12:05:43 EDT 2007
The GO-32 is eath-pointing stabilized. So it also has a hole
strraight down, so little you can do on the ground to improve
performance above say 70 degrees. And it is there only 2% of
the time, so not worth giving up performance everywhere else to
have gain where it is not needed.
Bob, WB4APR
> -----Original Message-----
> THis brings up the other question about GO-32: the "hole"
> above about 60 degrees elevation. How about a horizontal
> dipole antenna oriented east/west. Its "holes" will be on
> the east and west horizons, where a polar-orbiter will seldom
> be detectable.
>
>> On all the "good" passes, the bird will be going
>> through the donut, and not the hole.
>>
>> I wonder how an "eggbeater" antenna would work
>> compared to the to the standard 18/19" whip?
Yes/now. Eggbeater will have coverage in the hole, but because
it is circular polariszed, it is giving up 3 dB of performance
everywhere else...
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