[amsat-bb] Re: Circular polarization

Trevor . m5aka at yahoo.co.uk
Sun May 13 13:59:02 PDT 2012


I've found circular gives consistantly better results than a linear polarized antenna with the current amateur satellites. 

The IARU-R1 VHF Managers Handbook mentions standards for polarization on page 122. It can be downloaded at 
http://www.iaru-r1.org/index.php?option=com_remository&Itemid=173&func=startdown&id=428 

73 Trevor M5AKA

--- On Sun, 13/5/12, David 4X1DG <4x1dg at iarc.org> wrote:
> Is a UHF circular polarization
> antenna needed for the current operational
> satellites?
> I am planning some work on my antenna system and wonder if
> the CP
> is needed, or actually, deteriorate the signal by 3dB if the
> satellites are using linear antennae??
> 
> 
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