The role of satellite networks in global communications is growing at an unprecedented pace. From direct broadcast satellite (DBS) television, to satellite phones, to credit card transactions, to the Internet, corporations and consumers are embracing these new services and placing demands on bandwidth. With this demand have come expectations in terms of basic service costs, hardware costs, and ease-of-use. These expectations have forced the industry to examine its traditional ways of operating in order to make satellite services as accessible and convenient as its terrestrial competitors.
Recent current events, such as the World Trade Center tragedy and its aftermath, have demonstrated our need for and how reliant we have become on communication medium. As the World Trade Center lay in ruins, also destroyed were a vast array of communication equipment from transmission antennae for radio and TV stations to switching equipment for phone service. Though throughout all this people were still able to communicate, TV and radio stations were still transmitting their signal. Much of this was a result of wireless and satellite technology.
Satellite television is a system of supplying television programming using broadcast signals relayed from communication satellites. The signals are received via an outdoor parabolic reflector antenna usually referred to as a satellite dish and a low-noise block downconverter (LNB). A satellite receiver then decodes the desired television program for viewing on a television set. Receivers can be external set-top boxes, or a built-in television tuner. Satellite television provides a wide range of channels and services, especially to geographic areas without terrestrial television or cable television.
The direct-broadcast satellite television signal can be either older analogue signals, or newer digital signals, both of which require a compatible receiver.