FM Transmission Microphone

List of parts: (Less than 20$)
Description Quantity
Small PC Borad 1
Capacitators:  
100 pF 1
10 pF 1
4 pF 2
0.01 uF 1
(Electrolytic) 10 uF 2
Resistors:  
10 kOhms 1
1.2 kOhms 1
33 kOhms 2
100 Ohms 1
180 Ohms 1
Transistors: 2SC1923 2
Electret Condenser Mic (ECM) 1
0.27-0.30 uH coil 1
Vinyl insulated wire Some

For best results, use resistors with smaller error margins.

 With this wireless microphone, you can tune your radio to an unoccupied channel included between 91 and 97 MHz in the FM frequencies and listen in. You must tune the microphone to the unoccupied frequency near a radio. Personally, I put the Mic at one end of the house and can hear what is happening using my small walkman at the other end of the house (I have a big house).

It's a cool little project to build if you're a novice in electronics as it is not too hard to understand.

Block Diagram:

The plans will be up soon. If you need them badly, just email me.