Bob, for comparison, I used a 30" x 24" grill for AO-40. I found that
moving the dish +/- one "click" on my controller (10 degrees) would make
a just-audible difference in the received signal strength. So, I figure
10 degrees is the 3db beam width, not good enough, apparently, for the
ISS TV...
Greg KO6TH
Bob- W7LRD wrote:
When AO-51 used the S band downlink, I used a 18 inch TV dish with a 6 turn
helix feed connected to a AIDC 3731 (K5GNA) down converter. I do not know the
pointing accuracy as it was not used very much. On AO-40 (sobsob) I used a 4
foot primestar dish (heavy) with the same feed and dc.
73 Bob W7LRD
----- Original Message -----
From: "michael luft"<milu...@gmail.com>
To: amsat-bb@amsat.org
Sent: Thursday, September 5, 2013 2:59:29 AM
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
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