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Wireless Microphone

2016-02-04 06:24  
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Ql amplifies the output from an electret microphone MIC1. Audio is fed into oscillator Q2, which modulates the signal.
Wireless Microphone

LI CI is a tank circuit for operation in the 88-MHz region. The antenna is a 6- to 8-inch piece of wire. LI is a variable inductor in the l- range.

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