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单词 radio range
释义

radio rangen.

Brit. /ˈreɪdɪəʊ ˌreɪn(d)ʒ/, U.S. /ˈreɪdioʊ ˌreɪndʒ/
Origin: Formed within English, by compounding. Etymons: radio n., range n.1
Etymology: < radio n. + range n.1
1. The distance or area within which reception of a radio signal or broadcast is possible.
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1919 Syracuse (N.Y.) Herald 20 May 1/1 The aviator almost certainly would have sent a farewell message before getting out of radio range had an accident not befallen him.
1979 J. A. Gunsberg Divided & Conquered viii. 186 His units, delayed by the infantry and Allied demolitions, became fractionated beyond radio range.
1994 Richmond (Va.) Times-Dispatch 2 Dec. c1/1 If you've ever been stuck on a stretch of road out of radio range, you understand the appeal of talking books.
2. The part of the electromagnetic spectrum comprising radio waves; the radio spectrum.
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the world > matter > physics > electromagnetic radiation > electronics > electronic phenomena > [noun] > frequency > radio frequency
radio frequency1915
radio range1926
radio spectrum1927
radio1968
1926 Physical Rev. 27 202 The ionic term will be negligibly small compared to the electronic term, except for very long waves outside of the usual radio range.
1949 Nature 12 Nov. 816/2 The radio range from about 1 cm. to 20 m.
1979 Globe & Mail (Toronto) 25 July 1/1 Plans to set aside a new ultra-high-frequency radio range for private use.
2004 Astron. & Astrophysics 420 1061 The detailed analysis..reveals strong variability of this star both in the X-ray and radio ranges.
3. Aeronautics. A radio beacon transmitting directional radio signals which can be used by aircraft to determine the bearing of the transmitter.
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society > travel > air or space travel > action of flying (in) aircraft > navigation of course of aircraft > [noun] > radio beam or beacon > navigational radio beacon
range beacon1852
radiophare1912
radio range1929
1929 Proc. IRE 17 2147 The so-called ‘aural’ type of directive radiobeacon, or ‘radio range’ as it is now called, was finally considered to be most applicable to the Airways Service.
1942 P. C. Sandretto Princ. Aeronaut. Radio Engin. i. 7 By the late fall of 1929, there was installed in the United States a line of radio ranges extending from New Jersey to Iowa.
1951 Oxf. Junior Encycl. IV. 291/1 The Radio Range, a long-range navigational aid..transmits the letters A..and N..in Morse code simultaneously in different directions. If the pilot is flying directly on his proper course, he will be mid~way between the paths of the two signals.
1999 M. J. Novosel Dustoff v. 41 After passing the Salt Flat radio range, I contacted the radio station at Wink and advised the operator of our intention to land at Pyote.
This entry has been updated (OED Third Edition, June 2008; most recently modified version published online March 2022).
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n.1919
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更新时间:2024/11/10 22:20:46