ground radio stations

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• Radio — is the 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… …   Wikipedia

• Radio jamming — is the (usually deliberate) transmission of radio signals that disrupt communications by decreasing the signal to noise ratio. Unintentional jamming occurs when an operator transmits on a busy frequency without checking that it is in use first,… …   Wikipedia

• Radio drama — is a form of audio storytelling broadcast on radio. With no visual component, radio drama depends on dialogue, music and sound effects to help the listener imagine the story. Radio drama achieved widespread popularity within a decade of its… …   Wikipedia

• Radio regen — is a charity based in Manchester, UK, that provides training in community radio. Origins Emerging from the kernel idea of radio training for unemployed people, Radio Regen was born as a non profit organisation in April 1999, in partnership with… …   Wikipedia

• Radio masts and towers — Masts of the Rugby VLF transmitter in England …   Wikipedia

• Radio clock — A radio clock is a clock that is synchronized by a time code bit stream transmitted by a radio transmitter connected to a time standard such as an atomic clock. Such a clock may be synchronized to the time sent by a single transmitter, such as… …   Wikipedia

• Radio broadcasting — Long wave radio broadcasting station, Motala, Sweden …   Wikipedia

• radio — /ray dee oh /, n., pl. radios, adj., v., radioed, radioing. n. 1. wireless telegraphy or telephony: speeches broadcast by radio. 2. an apparatus for receiving or transmitting radio broadcasts. 3. a message transmitted by radio. adj. 4. pertaining …   Universalium

• Radio propagation — is a term used to explain how radio waves behave when they are transmitted, or are propagated from one point on the Earth to another. [ H. P. Westman et al, (ed), Reference Data for Radio Engineers, Fifth Edition , 1968, Howard W. Sams and Co.,… …   Wikipedia

• Radio-frequency identification — (RFID) is a technology that uses radio waves to transfer data from an electronic tag, called RFID tag or label, attached to an object, through a reader for the purpose of identifying and tracking the object. Some RFID tags can be read from… …   Wikipedia

• Ground-controlled interception — (GCI) an air defense tactic whereby one or more radar stations are linked to a command communications center guides interceptor aircraft to an airborne target. This tactic was pioneered by the Royal Air Force during the World War II, although the …   Wikipedia