----- Original Message ----- From: "David 4X1DG" [email protected] To: [email protected] Sent: Sunday, May 13, 2012 6:30 PM Subject: [amsat-bb] Circular polarization
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??
----- Original Message ----- From: "Bob- W7LRD" [email protected] To: "Ib Christoffersen" [email protected] Cc: [email protected]; "David 4X1DG" [email protected] Sent: Sunday, May 13, 2012 8:13 PM Subject: [amsat-bb] Re: Circular polarization
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I believe Domenico had a scheme for switching any of the four. These uncertainty's make it fun.
still rebuilding all antennas
73 Bob W7LRD
Seattle
Hi Bob, W7LRD
My articles "SWITCHING FOUR POLARIZATION ON A 70 cm CROSSED YAGI" was published in AMSAT-Journal March/April 2007 Part-1 and May/June 2007 Part-2
I can send both articles in pdf files to anyone is interested on it.
73" de i8CVS Domenico