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 Television - The television is a telecommunication system for broadcasting and receiving moving pictures and sound ...
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Satellite and Cable Television. Cable and satellite television broadcasting overview, information and facts...
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Satellite and Cable Television
Television programs may be transmitted either 'live' or from a
recording.
When a television program is broadcast, the varying electrical signals
are then amplified and used to modulate a carrier wave, the modulated carrier is usually fed to an antenna,
where it is converted to electromagnetic waves and broadcast over a
large region. The waves are sensed by antennas connected to
television receivers.
The range of waves suitable for radio and
television transmission is divided into channels, which are assigned
to broadcast companies or services.
Most television viewers no longer receive signals
by using antennas; instead, they receive programming via cable
television.
Cable delivery of television started as a way to improve
reception. A single, well-placed community antenna received the
broadcast signals and distributed them over coaxial or fiber-optic
cables to areas that otherwise would not be able to receive them.
Today, cable television is popular because of the wide variety of
programming it can deliver. Many systems now provide more than 100
channels of programming. Typically, a cable television company
receives signals relayed from a communications satellite and sends
those signals to its subscribers.
Some television viewers use small satellite dishes to
receive signals directly from satellites. Most satellite-delivered
signals are scrambled and require a special decoder to receive them
clearly.
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 Satellite Television - How Satellite TV Works, brief history and overview of Satellite Television, facts and more...
 Cable Television - The History of Cable TV Cable television, formerly known as Community Antenna Television or CATV, was born in the mountains of Pennsylvania in the late 1940's.
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TV Sets
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