----- 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 > <snip> > 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 _______________________________________________ Sent via [email protected]. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
