I want to thank everyone who responded to my question both here on the BB and to me directly. They are: K8YSE, KQ6EA, W7LRD, WB2OQQ, KO4MA, and K9STH. It was interesting; there was consensus on the 70cm uplink being rhcp but really no consensus on what the 2m downlink polarization should be. I recently picked up some used crossed yagis and a rotator that I can use for elevation control so we'll see what I can put together that might perform better than my current "cheap yagis" at a fixed 15 degree elevation. Thanks again for the help. 73, Ed, K0NW
From: Andrew Glasbrenner glasbrenner@mindspring.com To: edroth2006 edroth2006@sbcglobal.net, amsat-bb@amsat.org Subject: [amsat-bb] Re: AO-7 Antenna Polarization Message-ID: 18497234.1372814703462.JavaMail.root@elwamui-rubis.atl.sa.earthlink.net Content-Type: text/plain; charset=UTF-8 I dug out some old books including OSCAR: The Ham Radio Satellites by Dave Ingram, K4TWJ, and OSCAR Amateur Radio Satellites by Stratis Caramanolis, and the AMSAT Journal from December 1974. All three agree that in the Northern Hemisphere, AO-7 polarizations are as follows: Mode B uplink and downlink RHCP Mode A uplink LHCP Mode A downlink linear 435.1 beacon LHCP The turnstile is shared on both 2m and 70cm. I hope this clears things up some. 73, Drew KO4MA AMSAT VP Operations -----Original Message-----
From: edroth2006edroth2006@sbcglobal.net Sent: Jul 2, 2013 12:38 AM To:amsat-bb@amsat.org Subject: [amsat-bb] AO-7 Antenna Polarization
Can someone tell me what type and polarization the antennas are that are currently in use on the AO-7 satellite? I've done many searches and cannot find this information anywhere I have looked. Thanks and 73, Ed, K0NW