Satellite Dish

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A satellite dish is type of parabolic reflector antenna that is designed specifically for transmitting signal and receiving signals from satellites. Dishes come in different sizes and designs depending on its purpose. Satellite dishes used at home for television reception are around 18' to 31' inches diameter and are fixed. Smaller the dish, more the problems related with rain fade and other adjacent satellites. Motorized satellites that are as big as 3 meters were originally used as channel receivers from different satellites. These dishes are still in use with three standards; DiSEqC, USALS, and 36v Positioners.

With regards to satellite television, signals are sent to a main communications satellite that is fixed in orbit above the earth. The signals are scrambled, so when the user pays for a subscription, they get a receiving dish and a descrambler. The tuning information is then fed to the TV through a cable.

Having your own satellite dish solves many problems earlier associated with television broadcasting methods. These stations broadcast signals via 2 radio wave bands; VHF and UHF. Ariel antennas receive as much of the transmission as possible, depending on the strength of the signal and the surrounding environment. Cable television networks could help with signal quality, but this would mean miles and miles of stringing insulated wire and subscription services.Satellite dishes bear no interference with signals from the main satellite. Satellite dish owners avail of additional channels and excellent clarity of digital signals.

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