Satellite dishes are particularly difficult to protect. The dish itself has a variety of sensitive components and the system has several data and control lines connected to the TV or DVD/DVR inside the home. All of these lines and the various components must be protected.
Most dishes have at least three lines running to the house: a position control line, a power line for the positioning motor, and a line carrying the video signal. Each line requires surge protection both at the house and at the dish. In addition, the low noise amplifier must be protected at the dish. Most satellite dish dealers can offer recommendations on protection systems.