This kit utilizing minimal components to build a simple tune-able AM radio transmitter. This circuit provides a good introduction to basic RF concepts and leaves plenty of room for the builder to experiment. The output power of the transmitter provides a great opportunity for experiments in signal amplification as well. Check out what others are saying about the Super Simple Low Power AM Radio project build!
This circuit provides an alternative usage of the popular 555 timer as an inverter gate used as a relaxation oscillator to generate the carrier signal. Add a small signal diode to create a heterodyne mixer to input the signal to be sent.
To remain within the specifications of part 15 of the FCC regulations keep the antenna under 3 meters (9 feet)