Kit - FM Wireless Mic Bug 1 Transistor

Product Code: FK702


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Buy 1+ $6.80 (incl. GST)
Buy 5+ $6.46 (incl. GST)
Buy 10+ $6.14 (incl. GST)

** Future Kit needs to be assembled **


The FM wireless microphone circuit uses a resonant coil

pattern etched onto the PCB to simplify the fabrication.


Technical data

- Power supply : 9VDC.

- Electric current consumption : 10mA. (max.)

- Signal transmitting frequency: 88 MHz

- IC board dimension : 1.64 in x 1.10 in


Circuit performances

The condenser microphone receives sound signals coming

into it. In the microphone there is an amplifier diaphragm that

transmits signals through C2 and to Leg B of TR1. TR1 then

generates radio wave frequency and mix the sound signals with

the generated radio frequency. Generation of radio frequency

depends on the trimmer, and the coil etched from the PCB at Leg

C of TR1 shall be connected to the antenna in order to broadcast

the sound 



Future Kit

Future Kit

Hobby World Center Co., Ltd. was established in 1985 as an electronic learning kits producer. Since then, it has developed and provided appropriate kits and modules as well as multipurpose boxes, to suit various assigned applications and requirements needed by all electronics lovers.The company has...

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