Links & pointers:

• http://www.ictklas.nl/wiswijzer/media/showmap/index.htm
• http://en.wikipedia.org/wiki/Parabolic_antenna
• http://www.davdata.nl/parabool.html
• http://www.wisfaq.nl/show3archive.asp?id=50302
• http://www.wisfaq.nl/show3archive.asp?id=9437