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Commonly Used By Ham Radio Operators In The Early 20Th Century Crossword Clue

There is 1 exact and 169 possible answers.
We've checked our database and we believe the answer to be CRYSTAL MICROPHONE with a confidence score of 95%.
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We're 95% sure the answer is CRYSTAL MICROPHONE

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95%17Exact Match!
noun

• a microphone in which sound waves vibrate a piezoelectric crystal that generates a varying voltage

47%9 Device used by HAM radio operators to measure the resonant frequency of an antenna
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44%13Used for amateur radio and ham operators
noun

• the entire spectrum of electromagnetic frequencies used for communications; includes frequencies used for radio and radar and television

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