radio observation | an observation made with a radio telescope |
clock radio | a radio that includes a clock that can be set to turn it on automatically |
omnirange omnidirectional range omnidirectional radio range | a navigational system consisting of a network of radio beacons that provide aircraft with information about exact position and bearing |
push-button radio | a radio receiver that can be tuned by pressing buttons |
radar microwave radar radio detection and ranging radiolocation | measuring instrument in which the echo of a pulse of microwave radiation is used to detect and locate distant objects |
radio wireless | a communication system based on broadcasting electromagnetic waves |
radio antenna radio aerial | omnidirectional antenna comprising the part of a radio receiver by means of which radio signals are received |
radio beacon beacon | a radio station that broadcasts a directional signal for navigational purposes |
radio chassis | a chassis for a radio receiver |
radio compass | a direction finder that gives a bearing by determining the direction of incoming radio signals |
radio interferometer | radio telescope that uses interference patterns from two antennas instead of a parabolic antenna |
radio link link | a two-way radio communication system (usually microwave), part of a more extensive telecommunication network |
radio-phonograph radio-gramophone | electronic equipment consisting of a combination of a radio receiver and a record player |
radio receiver receiving set radio set radio tuner wireless | an electronic receiver that detects and demodulates and amplifies transmitted signals |
radio station | station for the production and transmission of AM or FM radio broadcasts |
radio telescope radio reflector | astronomical telescope that picks up electromagnetic radiations in the radio-frequency range from extraterrestrial sources |
radio transmitter | transmitter that is the part of a radio system that transmits signals |
radio brightness | the strength of a radio wave picked up by a radio telescope |
radio frequency | an electromagnetic wave frequency between audio and infrared |
radio astronomy | the branch of astronomy that detects and studies the radio waves emitted by celestial bodies |
radio radiocommunication wireless | medium for communication |
radio broadcast | a broadcast via radio |
radio news | a radio broadcast of news |
radio beam beam | a signal transmitted along a narrow path, guides airplane pilots in darkness or bad weather |
radio beacon | a characteristic signal emitted by a transmitter used for navigation |
radio noise | static at radio wavelengths |
quasar quasi-stellar radio source | a starlike object that may send out radio waves and other forms of energy, many have large red shifts |
radio source | an object that radiates radio waves |
radio announcer | an announcer whose voice is broadcast on radio |
radio operator | someone who operates a radio transmitter |
De Forest Lee De Forest Father of Radio | United States electrical engineer who inpatented the first triode vacuum tube, which made it possible to detect and amplify radio waves (-) |
radiopacity radio-opacity | opacity to Xays or other radiation |
radio wave radio emission radio radiation | an electromagnetic wave with a wavelength between . cm to , m |
radio signal | a radio wave used to transmit and receive messages |
radio spectrum radio-frequency spectrum | the entire spectrum of electromagnetic frequencies used for communications, includes frequencies used for radio and radar and television |
radio | transmit messages via radio waves, he radioed for help |
radiopaque radio-opaque | not transparent to X-rays or other forms of radiation, barium sulfate is radiopaque |
radio-controlled | operated and guided by radio, a radio-controlled airplane |
radio | indicating radiation or radioactivity, radiochemistry |