Very simple, sensitive and high quality AM radio circuit can be make with MK484 monolithic integrated circuit with very few external components.
This MK484 AM radio circuit provides a complete solution including : RF amplifier, Detection and AGC circuit (automatic gain control ), which requires only a few external components to give a high quality AM Tuner.
This fm transmitter electronic project is designed using common electronic parts and 2N2222 transistors. To get a bit of tuning out of the coil you could put a 4-40pF trimmer capacitor parallel over the 1 µH inductor.
The power supply for this mini FM transmitter with transistors ( transmitter ) can be a stabilized 9V power supply or we can use a 9 volts battery.
This long range fm transmitter circuit electronic project is designed using common electronic parts and is capable to transmit signal up to 400 meters .
This long range fm transmitter circuit can be used to supervise a room or to design a wireless microphone . To listen the signal it can be used any Fm radio receiver.