To build this simple radio transmitter, you will need to gather the parts such as a 9V battery, a clip, wires, a prototype board, a trimmer capacitor, a resistor, an audio plug, etc. From tools, ...

If you wanted to know how to make long range FM transmitter, here’s a way to do that. For this project, you need solid gauge wire, electret microphone, a copper clad PCB, a transistor, and capacitors.