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Around the globe, Broadcast Television is financed by either government, advertising, licensing (a form of tax), subscription or any combination of these. To protect revenues, Subscription TV channels (such as Sky and Virgin) are usually encrypted to ensure that only subscription payers receive the decryption codes to see the signal. Non-encrypted channels are known as free to air or FTA.
Student Broadcast TV
Broadcast TV is typically disseminated via radio transmissions on designated channels in the 54–890 megahertz frequency band. Signals are now often transmitted with stereo and/or surround sound in many countries. Until the 2000s broadcast TV programs were generally recorded and transmitted as an analog signal, but in recent years public and commercial broadcasters have been progressively introducing digital television broadcasting technology.
A standard television set comprises multiple internal electronic circuits, including those for receiving and decoding broadcast signals. A visual display device which lacks a tuner is properly called a monitor, rather than a television. A television system may use different technical standards such as digital television (DTV) and high-definition television (HDTV). Television systems are also used for surveillance, industrial process control, and guiding of weapons, in places where direct observation is difficult or dangerous.
Amateur television (ham TV or ATV) is also used for experimentation, pleasure and public service events by amateur radio operators. Cheap laptops and computers can be used to create and edit such programmes. Ham TV stations were on the air in many cities before commercial TV stations came on the air.
Student Media, making news on television for the entire UK