beat frequency oscillator 中文是什么意思
发音:用"beat frequency oscillator"造句"beat frequency oscillator"怎么读
A beat frequency oscillator or BFO in radio telegraphy, is a dedicated oscillator used to create an audio frequency signal from Morse code (CW) transmissions to make them audible. The signal from the BFO is then heterodyned with the intermediate frequency signal to create an audio frequency signal.
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