FM Wireless in this circuit can transmit voice signals to any FM Radio receiver 100 meters away. The circuit is basically a frequency modulated transmitter working at 100 MHz. The frequency of the transmitter can be varied slightly by changing the trimmer VC3.
Figure1 Schematic of FM Wireless 3VDC
Figure 2 Completed Circuit of FM Wireless 3VDC
Figure 2 Show Completed circuit The coil L1 is air core 8 turn 22 SWG. L2 core 20 ture 18 SWG
Data sheet :
The Transistor of this circuit use 2N3904 that This device is designed as a general purpose amplifier and switch.The useful dynamic range extends to 100 mA as a switch and to100 MHz as an amplifier.
FM Wireless 3VDC 
