UPC1651 FM wireless microphone circuit

Posted on Mar 28, 2007

Circuit as shown. This circuit uses NEC Corporation of Japan as a major production upc1651 integrated circuit device, the circuit gain high, stable, thus ensuring high performance microphone. It consists of using the FM transmitter circuit.

UPC1651 FM wireless microphone circuit
Click here to download the full size of the above Circuit.

It is used as a drag line 40--50cm flexible antenna, the effective transmission range is greater than 30M. Carefully adjust the spacing L and fine-tuning capacitor, it can transmit frequency coverage of 88--108MHZ. FIG diameter L 0.51mm enameled wire around five laps were derived from the 4mm diameter cylindrical.

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