Term
| amplitude modulation AM 219 |
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Definition
| radio transmissions created by changing the power of the carrier wave |
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Term
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Definition
| radio transmissions in which an electronic waveform represents the sound on a carrier wavve |
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Term
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Definition
| a tube invented by Lee De Forest that was designed to pick up and amplify radio signals; also known as a vacuum tube |
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Definition
| using wireless technology to instantaneously reach a wide audience |
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Term
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Definition
| broadcast station indefications assigned by the FCC |
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Term
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Definition
| time divisions that radio stations make in the day in order to schedule appropriate programming |
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Term
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Definition
| signal transmissions by assigned numbers rather than analog waves |
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Term
| electromagnetic spectrum 213 |
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Definition
| the range of frequencies that can be used for transmitting radio waves with electricity |
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Term
| federal communications commission (FCC) 219 |
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Definition
| government agency in charge of regulating all means of interstate telephone and radio communication |
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Term
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Definition
| consistent programming formula with a recognizable sound and personality |
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Term
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Definition
| graphic used by radio programmers showing each feature of the programming hour |
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Term
| frequency modulation (FM) 220 |
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Definition
| transmission created by changing the speed at which radio waves are generated |
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Term
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Definition
| telegraph code of dots and dashes invented by Samuel Morse |
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Term
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Definition
| a group of interconnected broadcast stations that share programming; also, the parent company that supplies that programming |
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Term
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Definition
| a local station that has a contractual relationship to air a network's programming |
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Term
| owned and operated stations (O&Os) 217 |
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Definition
| broadcast stations possessed by and run by the network; they usually carry everything the network provides |
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Term
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Definition
| a practice at which record companies paid radio station personnel to play certain records |
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Term
| pirate radio stations 238 |
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Definition
| low-power, unlicensed, illegal stations |
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Term
| public interest, convenience, and neccesity 219 |
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Definition
| a phrase from the radio act of 1927 requiring that broadcasting be good for the community |
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Term
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Definition
| broadcast outlets that derive their income from sources other than the sale of advertising time; also known as noncommercial |
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Term
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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 |
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Term
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Definition
| radio personalities who derive humor and ratings from lewd and tasteless comments, using tactics such as vulgarity, racism, sexism, and cynicism |
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Term
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Definition
| limited nature of broadcast frequencies |
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Term
| sustaining programming 216 |
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Definition
| regular unsponsored broadcast shows designed to maintain audience contact until advertising can be sold for that time |
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Term
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Definition
| early plan for radio revenue in which access to radio time would be free |
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Term
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Definition
| radio format in which the current 40 best-selling songs are played in rotation |
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Term
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Definition
| a durable, solid-state, minature version of the large and fragile vacuum tubes used in early radios |
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Term
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Definition
| companies that provide fully automated around the clock programming for radio stations |
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Term
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Definition
| name for early radio transmissions, before human voices could be carried on the airwaves |
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