Patterns & Metaphors
Broadcasting
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The activity of transmitting radio-waves bearing messages capable of being understood through the use of appropriate receivers. Radio broadcasting includes advertising and programming by commercial stations, and all all radio emissions from governmental, military, police, and local authorities and public services. Citizen band radio is private broadcasting includes unregulated, or unauthyorized broadcasting, or illegal transnational broadcasting. Television broadcasting is similarly divided into commercial and public forms and distinguished by distribution systems (e.g. cable) and technologies (e.g. interactive television).
