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superheterodyne

[soo-per-het-er-uh-dahyn]Radio.
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adjective
  1. denoting, 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.
noun
  1. a superheterodyne receiver.

Origin of superheterodyne

First recorded in 1920–25; super(sonic) + heterodyne
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018