After my DIY article “Build Your Own Headphone Amp” in the May 25 issue, the good folks at Radio ... schematic for that preamp. It’s inexpensive, which is a plus, since most such circuits are one-offs ...

The coil details are presented in the fm receiver circuit diagram. The radio receiver is adjusted on different stations with the help of C5. P1 potentiometer is adjusted untill the best reception is ...