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Details Title: RADIO Description: Enterprise of Mass Communication Total Flash Cards: 29 Created: 12/14/2007 06:00:54	To study from this set of flash cards, or to create your own your own study flash cards, register HERE. If you are already a registered user, CLICK HERE.
Cards Term electromagnetic spectrum Definition The range of frequencies that can be used for transmitting radio waves with electricity. Term Morse code Definition Telegraph code of dots and dashes invented by Samuel Morse. Term broadcasting Definition The use of wireless technology to instantaneously reach a wide audience. Term wireless telegraphy Definition Name for early radio transmissions, before human voices could be carried on the airwaves. Term Audion Definition A tube invented by Lee De Forest and designed to pick up and amplify radio signals; also know as a vacuum tube. Term toll broadcasting Definition Early plan for radio revenue in which access to radio time would be by fee. Term sustaining programming Definition Regular unsponsored broadcast shows designed to maintain audience contact until advertising can be sold for that time. Term network Definition A group of interconnected broadcast stations that share programming. Also, the parent company that supplies that programming. Term owned and operated stations (O&Os) Definition Braodcast stations possessed by and run by the network; they usually carry everything the network provides. Term network affiliate Definition A local station that has a contractual relationship to air a network's prgramming. Term spectrum scarcity Definition Limited nature of broadcast frequencies. Term "public interest, convenience, and necessity" Definition A phrase from the Radio Act of 1927 requiring that broadcasting be good for the community. Term Federal Communications Commission (FCC) Definition Government agency in charge of regulating all means of interstate telephone and radio communication. Term Call letters Definition Broadcast station identifications assigned by FCC. Term amplitude modulation (AM) Definition Radio transmissions created by changing (modulating) the power (amplitude) of the carrier wave. Term frequency modulation (FM) Definition Transmissions created by changing the spread at which radio waves are generated. Term transistor Definition A durable, solid-state, miniature version of the large and fragile vacuum tubes used in early radios. Term format Definition Consistent programming formula with a recognizable sound and personality. Term Top 40 Definition Radio formats in which the current 40 best-selling songs are played in rotation. Term payola Definition A practice in which record companies paid radio station personnel to play certain records. Term analog radio Definition Radio transmissions in which an electronic waveform represents the sound on a carrier wave. Term digital radio Definition Signal transmissions by assigned numbers rather than analogue waves. Term dayparts Definition Time divisions that radio stations make in the day in order to determine programming. Term format clock Definition Graphic used by radio programmers showing each feature of the programming hour. Term sampling Definition Measurements taken from a small percentage of the audience chosen to represent the behavior of the rest of the audience. Broadcast ratings are a form of sampling. Term turnkey networks Definition Companies that provide fully automated around-the-clock programming for radio stations. Term public radio Definition Broadcast outlets that derive their income from sources other than the sale of advertising time; also known as noncommercial. Term shock jocks Definition Radio personalities who derive humor and ratings from lewd and tasteless comments, using tactics like vulgarity, racism, sexism, and cynicism. Term pirate radio stations Definition Low power, unlicensed, illegal stations.