[amsat-bb] Re: S band LEO Sat tracking

g0mrf at aol.com g0mrf at aol.com
Thu Sep 5 12:25:39 PDT 2013

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.


David G0MRF

-----Original Message-----
From: michael luft <milu111 at gmail.com>
To: amsat-bb <amsat-bb at 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?

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