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&fu...
73 Trevor M5AKA
--- On Sun, 13/5/12, David 4X1DG [email protected] 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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