Schematic of a extremely well and crystal clear sound FM stereo transmitter circuit for broadcasting CD quality music on FM band. This circuit will perform variety of tasks like transmit your walkman, computer, iPod, discman, TV and other audio sources on FM receiver. The heart of the
circuit is BA1404 FM transmitter IC, the circuit require only few external parts. The input voltage should be 1.5V to 3V DC, do not give more then 3 volt to the circuit it will damage the IC. Use 30cm copper wire as antenna, the L1 is 3-4 turns of 24 guage enameled wire wound on 5mm ferrite core or use ready made variable coil of 3.5 turns shown below.