[AK-VHF] fixed satellite antenna question

[Ed Cole]

Ron,

The classical solution is the "egg beater" antenna made from two 
circular loops mounted vertical and at right angles from each other. 
Usually mounted above four horizontal radials.  The two loops are fed 
1/2 wavelength out of phase by use of 70-ohm phasing line.

Typically this presents horizontal pol at the horizon and circular pol 
straight up.

But I would suggest you look the Lindenblad antenna:
https://www.amsat.org/wordpress/wp-content/uploads/2015/08/An-EZ-Lindenblad-Antenna-for-2-Meters2.pdf

The Lindenblad provides circular pol with gain maximized at low 
elevations (where satellite range is greatest).  The horizontal pattern 
is omni-directional.  I built the 2m/70cm pair described in the Amsat 
article.

you will find Lindenblad's at airports for base radios that contact 
aircraft.

On 1/28/2023 9:04 PM, Ron VE8RT wrote:
>     my rotatable satellite antenna system has some weather damage.  I'm
> interested in putting up fixed circular polarized 2 and 70cm antenna.
> Home building is the preferred option as I have materials on hand and
> tooling available at work.  As there are many interesting options for
> circular polarized antenna what design should I look at for optimum
> near horizon performance?
> 
>     Ron VE8RT DP22
>