[amsat-bb] Re: Antenna suggestions for mounting on vehicle for sat work.
maisel at lobo.net
Thu May 24 10:02:39 PDT 2012
Now if I could find a small commercial az-el rotator for an Arrow, that
would be ideal!
Clayton Coleman W5PFG wrote:
> I have yet to find a better solution for FO-29, SO-50, and AO-27
> mobile than a combination of small UHF yagi with preamp for the
> downlink and a VHF vertical for the uplink. While the quadrifilar
> helix, eggbeaters, and 19" whip all work, nothing gives me a 100% copy
> of all the LEO's from AOS to LOS like the yagi/preamp combination.
> I've tested the above mentioned fixed antennas for downlink across a
> variety of Texas terrain and surrounding noise environments. They all
> work, some better than others, but are no where near the performance
> level of a directional antenna. Since I'm a firm believer that
> hearing the bird is #1, I do not compromise with a vertical. It's
> safer for me to pull my vehicle over to a parking lot or rest area to
> work passes. I have done a few passes "in motion" with both the quad
> and the 19" whip and quite frankly terrain/obstructions play such a
> huge role I hardly recommend even attempting to do it unless you are
> on a flat, high plain.
> On Thu, May 24, 2012 at 3:02 AM, Lee Maisel <maisel at lobo.net
> <mailto:maisel at lobo.net>> wrote:
> Any ideas on a good antenna combo for mounting on a large vehicle?
> Possibly roofrack, specifically for satellite work?
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> expressed are those of the author.
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