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sunbathe on the roof of the house satellite dish for tanning I m lying in the sun A satellite dish is a dishshaped type of parabolic antenna designed to receive or transmit information by radio waves to or from a communication satellite. The term most commonly means a dish which receives directbroadcast satellite television from a direct broadcast satellite in geostationary orbit. Principle of operation Schematics of reflection principles used in parabolic antennas. The parabolic shape of a dish reflects the signal to the dishs focal point. Mounted on brackets at the dish s focal point is a device called a feedhorn. This feedhorn is essentially the frontend of a waveguide that gathers the signals at or near the focal point and conducts them to a lownoise block downconverter or LNB. The LNB converts the signals from electromagnetic or radio waves to electrical signals and shifts the signals from the downlinked Cband and, or Kuband to the Lband range. Direct broadc