Unlike the previous one, this circuit is intended for the reception of frequency modulated signals transmitted by the power grid. The circuit is from a Radio Electronics from February 1989.
This circuit was found in the Radio Electronics magazine of May 1990. The supply voltage depends on...
Using a BA1404 integrated circuit this small FM stereo transmitter was found in a Radio...
This circuit was found in an Elektor from the 90s. The integrated circuits are not very common...