This circuit was found in a 90s Popular Electronics. The circuit uses components from that time, intended to receive signals in the range of 150 to 250 kHz.
This is the receiver for the previous circuit. The audio amplifier supports equivalents. The...
We found this circuit in a 1983 English magazine, but it can be easily assembled today, as all...
This is a possible setting for a Colpitts oscillator operating in the audio track. The shunt coil...