Ultrasonic Microphone Plans

Ultrasonic Microphone Plans PUM

This Ultrasonic Microphone cannot be found by regular anti surveillance equipment and RF detection equipment. It uses ultrasonic vibrations to transmit sounds that are being picked up. The plans include the transmitter and the receiver needed to pick up the ultrasonic signal. Plus the plans show how to build a complete ultrasonic communications system.

This Ultrasonic Microphone cannot be found by regular anti surveillance equipment and RF detection equipment. It uses ultrasonic vibrations to transmit sounds that are being picked up. The plans include the transmitter and the receiver needed to pic
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