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

[Greg D]

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"<milu111 at gmail.com>
> To: amsat-bb at 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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