[amsat-bb] Antenna Polarization

Patrick Domack patrickdk at patrickdk.com
Tue Sep 22 19:11:42 PDT 2009

I've been meaning to setup some antennas for satellite operation for  
awhile here. And since I will probably end up doing it this  
fall/winder I had a question I was wondering about, before I get the  
antennas completely built connected up.

I plan on using a circular polarized antenna, for lhcr and rhcr.
Since this setup has two coax that your switch a 1/4wave (if I  
remember right) to either side to create the two rotations in the  

Is there a way I can modify this to feed two radios? so one radio  
would receive lhcr, and the other rhcr? Or would I be forced to use  
two antennas to do this?

The only idea I have is to use a signal splitter on each of the two  
antenna halfs before joining them, then join each of those splits into  
the cr parts. But I'm not sure if there is a better way to do this  
without as much loss, or if this might cause a backfeed that would  
defeat the me from getting any signal at all.

Maybe there is a good writeup of this on the web somewhere, but I have  
no clue what the proper terms to google it are, and haven't had any  


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