This video tutorial is about building a super spy bug transmitter. In this video we can see how to build a very small home made FM transmitter bug using a single transistor. To build this device doesn’t need  much money. This devices has a transmission range of 200 meters. This video provide the schematic diagram of the circuit and the PCB layout of the circuit. The step to make the spy bug transmitter is shown in detail in this video. This devices can pick up sounds from over 20 feet way, and it has frequency response of 20-20000 Hz, and the mic sensitivity is about -44db ±3dB. Here is the video :