单词	superheterodyne
释义	superheterodyne /ˌsuːpəˈhɛt(ə)rə(ʊ)dʌɪn / adjective Denoting or using a system of radio and television reception in which the receiver produces a tunable signal which is combined with the incoming signal to produce a predetermined intermediate frequency, on which most of the amplification is formed.The Lockheed Martin AN / ALR - 56M radar warning receiver is a superheterodyne receiver operating in the 2-20GHz band. noun A superheterodyne receiver.Both radios are similar in design - five - tube superheterodynes with both broadcast and shortwave tuning.... Its quality stood behind the commercial superheterodynes which were produced for marine and navy applications ten years ago. The public was not so receptive since superheterodynes were complicated devices requiring many controls, as well as lots of tubes and batteries. Origin 1920s: from supersonic + heterodyne.
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