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A bedside clock radio that combines a radio receiver with an alarm clock. A modern communications receiver, used in two-way radio communication stations to talk with remote locations by shortwave radio. Girl listening to vacuum tube radio in the 1940s. During the golden age of radio, 1920-1950, families gathered to listen to the home radio receiver in the evening. In radio communications, a radio receiver, also known as a receiver, wireless or simply radio is an electronic device that receives radio waves and converts the information carried by them to a usable form. It is used with an antenna.
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A radio receiver may be a separate piece of electronic equipment, or an electronic circuit within another device. The most familiar form of radio receiver is a broadcast receiver, often just called a radio, which receives audio programs intended for public reception transmitted by local radio stations. Modulation is the process of adding information to a radio carrier wave. FM” radios, and are able to receive both AM and FM radio stations, and have a switch to select which band to receive.
1998 that transmits audio from terrestrial radio stations as a digital signal rather than an analog signal as AM and FM do. Broadcasters can transmit a channel at a range of different bit rates, so different channels can have different audio quality. The signal strength of radio waves decreases the farther they travel from the transmitter, so a radio station can only be received within a limited range of its transmitter. Table radio – A self-contained radio with speaker designed to sit on a table. Clock radio – A bedside table radio that also includes an alarm clock. The alarm clock can be set to turn on the radio in the morning instead of an alarm, to wake the owner. FM radio receiver in a component home audio system.
It has no speakers but outputs an audio signal which is fed into the system and played through the system’s speakers. Portable radio – a radio powered by batteries that can be carried with a person. Radios are now often integrated with other audio sources in CD players and portable media players. Transistor radio – an older term for a portable pocket-sized broadcast radio receiver. Made possible by the invention of the transistor and developed in the 1950s, transistor radios were hugely popular during the 1960s and 70s, and changed the public’s listening habits.