crystal set
- an early, tubeless radio receiver using a crystal detector.
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Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
crystal set
- an early form of radio receiver having a crystal detector to demodulate the radio signals but no amplifier, therefore requiring earphones
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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