Hi Michael. Depends on the bandwidth of the modulation and the transmit power
But as a rough guide, I used a 12 turn helix with about 10 degree pointing accuracy with AO-51. That's not good, but it works. However, if you take the HAMTV equipment on the ISS, then you need a lot more gain on the ground and pointing accuracy of 2 degrees or better. Thanks David G0MRF -----Original Message----- From: michael luft <milu...@gmail.com> To: amsat-bb <amsat-bb@amsat.org> Sent: Thu, Sep 5, 2013 7:42 pm Subject: [amsat-bb] S band LEO Sat tracking What kind of positioning accuracy can be expected form amateur PC Software and Antenna Rotators? Or, in other words: What kind of S band antenna ( gain or dimensions) is needed to track a S band LEO Sat? 73 Michael _______________________________________________ Sent via AMSAT-BB@amsat.org. 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 _______________________________________________ Sent via AMSAT-BB@amsat.org. 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
