This is a simple radio transmitter project. You can try the simulation files with LTspice and you can check the demo video too. Whit this circuit can you test an old radio. Let's try it, have a fun!

The LTspice simulation file contains this circuit. The first transistor stage is a mixer and oscillator, the second is a small and simple amplifier stage. In first stage I use an AF transformer from an old radio (NEYWA 402) for the audio signal, but you can use other type too. Not critical.

Oscillogram from LTSpice:

FFT signal is here, it works on ~730kHz (so on Medium wave):

See LICENSE.txt for more information.

Varga Laszlo - https://vargalaszlo.com - [email protected]

Project Link: https://github.com/vargalaszlo87/radio-transmitter