[MLB-WIRELESS] Dish focal Calculation

[Ratbaggy]

Hi Peter,

Measure accross the widest part of the dish (major axis), that was the idea in suggesting a corner to corner measurement.  As long as you measure through the centre the maths will work out.  You should get the same resullt no matter where you measure the dish although picking the widest point will yield the largest numbers and minimise the effect of any errors.

Dave.
  ----- Original Message ----- 
  From: Datec 
  To: 'melbwireless' 
  Sent: Sunday, June 11, 2006 7:45 PM
  Subject: Re: [MLB-WIRELESS] Dish focal Calculation


  Just an extra point, It's a dish not a grid as some have given answers in respect to.

   

  Thanks 

  Peter

   

  -----Original Message-----
  From: Datec [mailto:datec01 at optusnet.com.au]
  Sent: Sunday, 11 June 2006 7:38 PM
  To: 'melbwireless'
  Subject: Dish focal Calculation

   

  Thanks so far guy's,

   

  What's doing my head in is the shape of the old Galaxy dish, its oval and I'm told the curve is part of a larger curve as only a portion of the parabola is used to save space. 

   

  So my problem seems to me, that I don't have the edges of the complete dish to find the focal point! Or am I just being a complete thicko.



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