Set Top Box The term set-top box describes a device that connects to a television and some external source of signal, and turns the signal into content, which is then displayed on the screen. In many areas of the world satellite television services supplement older terrestrial signals, providing a broader range of channels and services, including subscription-only services. Satellite Television Satellite television is television delivered by way of communications satellites, as compared to usual terrestrial television and cable television. A satellite dish is a particular type of microwave antenna, which comes in varying sizes and designs, and is most commonly used to receive satellite television. Satellite Dish A satellite dish is a special type of parabolic antenna designed with the purpose of transmitting signals to and/or receiving from satellites. The following are the types of Free-to-air Receivers: There are a number of competing systems in use, with early adopters having used C-band satellite dishes of many feet in diameter to receive signals which were originally analogue FM, later digital using the Motorola-proprietary Digicipher II system or later still going to Ku-band and under one-metre dishes with most often the international DVB standard. It can often be described as television's equivalent of shortwave radio. Some are paid directly by payment of a licence fee or voluntary donation, where as others are paid indirectly for consumer products and services where part of the cost goes toward television advertising and sponsorship.įree-to-air is used for international broadcasting. The term typically refers to delivery by satellite television, but in various parts of the world where encrypted digital terrestrial television channels exist, broadcast on UHF or VHF bands, it can also be applied to those systems.Īlthough these channels are described as free to use, the viewer does in fact pay for them. Neither of these options can be described as pay-TV, which describes a subscription service, which is encrypted. The term should not be confused with free-to-view, which describes TV, which is available without subscription, but which is encoded and may therefore be restricted geographically. Free-to-air (FTA) is a term used to describe television (TV) and radio broadcasts, which are broadcast, unencrypted and may therefore be picked up via any appropriate receiver.
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