Bug (Electronic) and Bug Detectors electronic circuits, schematics or diagrams


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Bugs (Electronic) & Detectors
Last Updated on: Thursday, May 15, 2008 10:03 AM

Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

3 Transistor FM Radio Bug: (electronic Circuit / Schematic added 10/04)

Bug Detector #1: (electronic circuit added 7/03)

Bug Detector with Beep: (electronic circuit added 7/03)

FM Radio Telephone Bug: (circuit / schematic design added 6/06)

FM Transmitter Bug: (circuit / schematic design added 6/06)

High Power FM Microphone (FM Bug): (electronic Circuit / Schematic added 10/04)

Miniature FM Spy Mic: This spy mic works from single 1.5 volts AA type battery cell. It is highly sensitive and has a range of 300 meters. You can use any HF transistor with cut-off freq. >300 MHz for Q. Use electret mic. (added 6/06)

Phone Tap: (electronic circuit added 7/03)

Simple Phone Tap: (electronic circuit added 7/03)

Surveillance Transmitter Detector: This circuit can be used to "sweep" an area or room and will indicate if a surveillance device is operative. The problem in making a suitable a detector is to get its sensitivity just right, Too much sensitivity and it will respond to radio broadcasts, too little, and nothing will be heard.

Three Transistor FM Radio Bug: (schematic / circuit (added 6/03)