Portal:Radio
  Welcome to Wikipedia's portal for Radio. Radio is the wireless transmission of signals, by modulation of electromagnetic waves with frequencies below those of visible light. Electromagnetic radiation travels by means of oscillating electromagnetic fields that pass through the air and the vacuum of space. It does not require a medium of transport. Information is carried by systematically changing (modulating) some property of the radiated waves, such as their amplitude or their frequency. When radio waves pass an electrical conductor, the oscillating fields induce an alternating current in the conductor. The word 'radio' is used to describe this phenomenon, and television, radio, and cell phone transmissions are all classed as radio frequency emissions. Modulation is the process where speech, music and the like are impressed onto the carrier wave of a transmission. Detection or demodulation is the reverse process which takes place in a receiver. The speech, music etc. is recovered and may then be amplified and applied to an ear piece or a loud speaker. The most common forms of modulation are Amplitude Modulation (AM) and Frequency Modulation (FM) both of which use different modulation and detection circuits. Cell phones, digital radio and digital television use more complex modulation and demodulation systems. The simplest AM receiver is the Crystal Set or Crystal Radio. Demodulation is achieved by a semiconductor diode. One of the earliest forms of detection consisted of a thin copper wire in contact with a small chunk of Galena Rock. Adequate signals could be heard in headphones for up to 50 km with simple arrangements. Template:/box-footer Lua error in package.lua at line 80: module 'Module:Box-header/colours' not found.  Radio content in the Golden Age of Radio had its origins in audio theatre. Audio theatre began in the 1880s and 1890s with audio recordings of musical acts and other vaudeville. These were sent to people by means of telephone and, later, through phonograph cylinders and discs. Visual elements, such as effects and sight gags, were adapted to have sound equivalents. In additions, visual objects and scenery were converted to have audio descriptions. Lua error in package.lua at line 80: module 'Module:Box-header/colours' not found.  This photo shows an early 1930s wooden radio receiver in the classic "cathedral" shape, which was designed and built by Philco. Philco, at the time of this radio's construction, was the leading manufacturer of radios. Photo Credit: User:Gmaxwell Lua error in package.lua at line 80: module 'Module:Box-header/colours' not found. WABC AM ("NewsTalkRadio 77") is the flagship station of the ABC Radio Network serving the New York City metropolitan area and is licensed to New York City. The station's transmitter is located in nearby Lodi, New Jersey. During the 1960s and 1970s, WABC was a highly successful station with its Top 40 format, and was the dominant music station in the New York City area -- reportedly drawing eight million listeners each week at the peak of its success -- and served as a role model for many other Top 40 stations in different cities. Since the 1980s WABC has had a talk radio format, and is not only the dominant talk radio station in the New York area, but was until recently the most listened to talk radio station in America. WABC is or has been the flagship station for nationally-known radio talkers Rush Limbaugh, Sean Hannity, and John Batchelor. Archives - [[WABC FriendsStar-Radio|Read more...]]
Template:/box-header The following are categories relating to radio: Radio by country • Radio networks • Radio formats • Radio stations • Radio people • Radio programs • History of radio • Radio drama • Amateur radio • Pirate radio • Types of radios • Radio technology • Radio frequency receivers • Radio hobbies • Radio logos • Radio writers • Years in radio • Military radio systems • Radio astronomy • SETI • Radio-related lists • Radio stubs Template:/box-footer Template:/box-header The following are lists relating to radio: 97.3 FM • 105.9 FM • BBC Radio 4 programmes • Dad's Army radio episodes • Fictional radio stations • FM broadcasting in Egypt • High school radio • Indie radio stations • Q92 • Q107 • Radio Stations of the BBC • Reith Lecture • Sirius Satellite Radio stations • This American Life episodes • UK radio programmes • World's oldest radio stations • XM Satellite Radio channels • Z103 • AOL Radio • Angel Radio • List of radio stations in Kosovo • WBBM (AM) Template:/box-footer Lua error in package.lua at line 80: module 'Module:Box-header/colours' not found.
Lua error in package.lua at line 80: module 'Module:Box-header/colours' not found. Fred Allen (born John Florence Sullivan on May 31, 1894 in Cambridge, Massachusetts, died March 17, 1956 in New York City) was an American comedian whose absurdist, pointed radio show (1934–1949) made him one of the most popular and forward-looking humorists in the so-called classic era of American radio. His best-remembered gag may be his long-running mock feud with friend and fellow comedian Jack Benny. Allen has been considered one of the more accomplished, daring and relevant humorists of his time. A master ad libber, he constantly battled censorship and developed routines the style and substance of which influenced future comic talents. Perhaps more than any of his generation, Fred Allen wielded influence that outlived both his contemporaries and the medium that made him famous.
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