検索結果- 英語 - 多言語
検索内容:
pirate radio
Broadcasting without having the necessary license that covers the territory where the signals are received.
transistor radio
(dated) A small portable radio receiver having transistors rather than thermionic valves; popular from the late 1950s.
radio wave
(physics) electromagnetic radiation having a wavelength between about .5 centimeters and 30,000 meters; used for the broadcasting of radio and television signals.
radio telephony
steam radio
(chiefly Britain, informal) Radio (sound broadcasting), considered as old-fashioned compared to television.
crystal radio
Synonym of crystal set
radio fix
The location of a radio transmitter by taking bearings from two receivers. / The location of a vessel or aircraft by taking bearings to two transmitters of known position.
radio knife
(medicine) A surgical instrument that uses a high-frequency electric arc to cut through or cut away tissue and at the same time sterilize the edges of the wound and seal cut blood vessels.
ham radio
amateur radio
The hobby or pastime of communicating by two-way radio, often striving for “DX” QSOs that are challenging because of distance.
