[amsat-bb] Re: Polarity questions

Ernie w8eh.ernie at gmail.com
Sat Sep 20 08:21:01 PDT 2008

You won't see any polarization difference with a yagi on AO-51 because 
it's downlink is circular polarized. So rotating your linear polarized 
hand held yagi will make no difference in the downlink signal. This is 
an ideal situation for hand held operation. :-)           Now it will 
make a difference in our uplink signal.

On SO-50 and AO-27, rotating your yagi to change polarization will make 
a noticeable change in signal strength.

AO-51 linear uplink antenna, CIRCULAR uhf downlink antenna
SO-50 Linear uplink antenna, linear downlink antenna
AO-27 Linear uplink antenna, linear downlink antenna

Ernie W8EH

Clint Bradford wrote:
>  >>...I have to disagree with Clint...
> I just must be the luckiest S.O.B.(*) working AO-51, then...During  
> demonstrations in front of folks, someone in the assemblage almost  
> always asks about polarization. I twist the Arrow, and we all "hear"  
> no difference in its strong, clean signal.
> Clint, K6LCS
> 909-241-7666
>   - S.O.B. - Satellite-operating Bradford
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