Answer: superheterodyne
AnswerCrossword Clue
superheterodynesuperheterodyne receiver
superheterodyneradio, applied to reception in which oscillations of slightly different frequency are imposed on the received oscillations, producing beats of a frequency above audio-frequency which are easily amplified
superheterodynedenoting, pertaining to, or using a method of processing received radio or video signals in which an incoming modulated wave is changed by the heterodyne process into a lower-frequency wave and then subjected to amplification and subsequent detection