From: bill.sloman@ieee.org   
      
   On 28/01/2026 1:31 am, Don wrote:   
   > Jan Panteltje wrote:   
   >>> Don wrote:   
   >   
   >    
   >   
   > 1. Why is a parabolic antenna used instead of a couple of yagis (two to   
   >     compensate for tumble)?   
   >   
   > 2. Why is the parabolic aimed slightly above the horizon? Doesn't this   
   >     orientation attenuate the signal when a satellite's overhead?   
      
   The satellite isn't directly overhead for very long - if it every is -   
   an equatorial orbit is the default case and that only gets directly   
   overhead if you live on the equator.   
      
   Pointing a parabolic antenna slightly above the horizon gives you   
   signal as soon as the satellite pops over the horizon, and it keeps on   
   giving you signal as the satellite gets closer (giving you a bigger   
   signal) and moves off the axis of the parabola (making the antenna less   
   sensitive).   
      
   --   
   Bill Sloman, Sydhey   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)