[amsat-bb] Re: AO-7 Antenna Polarization

edroth2006 edroth2006 at sbcglobal.net
Sat Jul 6 18:21:03 PDT 2013

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 
Thanks again for the help.
Ed,  K0NW

From: Andrew Glasbrenner <glasbrenner at mindspring.com> To: edroth2006 
<edroth2006 at sbcglobal.net>, amsat-bb at amsat.org Subject: [amsat-bb] Re: 
AO-7 Antenna Polarization Message-ID: 
<18497234.1372814703462.JavaMail.root at 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: edroth2006<edroth2006 at sbcglobal.net>
> Sent: Jul 2, 2013 12:38 AM
> To:amsat-bb at 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

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