1. At first the audience consisted largely of young men tinkering with crystal sets . 2. People listened to their crystal sets next day for news. 3. The Crystal Set disbanded at the end of 1991. 4. Modern crystal sets use piezoelectric crystal earpieces, which are much more sensitive and also smaller. 5. The Crystal Set released its first single, " A Drop in the Ocean ", independently. 6. It sold the first crystal set radios in 1922. 7. If the Horned Serpent wants the student, the crystal set into its forehead will light up. 8. Impedance of 1000 to 2000 ohms was common, which suited both crystal sets and triode receivers. 9. The requirements for earphones used in crystal sets are different from earphones used with modern audio equipment. 10. His research and experimentation with the Audion moved radio reception beyond the crystal set and spark-gap transmitters.
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