Search results
Results From The WOW.Com Content Network
Raidió Teilifís Éireann ( pronounced [ˈɾˠadʲiːoː ˈtʲɛlʲəfʲiːʃ ˈeːɾʲən̪ˠ] ⓘ; Irish for 'Radio [and] Television of Ireland'; [ 2 ]RTÉ) is an Irish public service broadcaster. It both produces and broadcasts programmes on television, radio and online. The radio service began on 1 January 1926, [ 3 ] while regular ...
Radioteletype ( RTTY) is a telecommunications system consisting originally of two or more electromechanical teleprinters in different locations connected by radio rather than a wired link. Radioteletype evolved from earlier landline teleprinter operations that began in the mid-1800s. [ 1] The US Navy Department successfully tested printing ...
History of radio. The early history of radio is the history of technology that produces and uses radio instruments that use radio waves. Within the timeline of radio, many people contributed theory and inventions in what became radio. Radio development began as "wireless telegraphy". Later radio history increasingly involves matters of ...
The invention of radio is a complex and disputed topic that involves many individuals and experiments. This article provides an overview of the history and development of radio technology, from the early discoveries of electromagnetic waves to the modern applications of radio communication. Learn more about the pioneers, controversies and innovations that shaped the radio industry.
Radio Televisión Martí is an American state-run radio and television international broadcaster based in Miami, Florida, financed by the federal government of the United States through the U.S. Agency for Global Media (formerly Broadcasting Board of Governors, BBG). It transmits propaganda in Spanish to Cuba and its broadcasts can also be ...
The radio spectrum is the part of the electromagnetic spectrum with frequencies from 3 Hz to 3,000 GHz (3 THz ). Electromagnetic waves in this frequency range, called radio waves, are widely used in modern technology, particularly in telecommunication. To prevent interference between different users, the generation and transmission of radio ...
Radio stations: 1 government-owned radio station and hundreds of privately owned radio stations (2007). [1]Radios: 835,000 (1997). [needs update]Television stations: 4 privately owned national terrestrial channels dominate TV broadcasting; multi-channel satellite and cable services are available (2007).
Radio frequency ( RF) is the oscillation rate of an alternating electric current or voltage or of a magnetic, electric or electromagnetic field or mechanical system in the frequency [ 1] range from around 20 kHz to around 300 GHz. This is roughly between the upper limit of audio frequencies and the lower limit of infrared frequencies, and also ...