[amsat-bb] Re: Antenna suggestions for mounting on vehicle for sat work.

[Lee Maisel]

Thanks Clayton!

Now if I could find a small commercial az-el rotator for an Arrow, that 
would be ideal!

Lee




Clayton Coleman W5PFG wrote:
> Lee,
>
> 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.
>
> 73
> Clayton
> W5PFG
>
> 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?
>
>     Thanks!
>
>
>     Lee
>     W5LMM
>
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