With this circuit, signals in the range of 10 kHz to 150 kHz can be received at close to 4 MHz from a shortwave receiver. The circuit is from a 303 Circuits from the 90s.
I found this circuit in a 1992 Electronics Experimenter Handbook. The circuit can be easily...
We found this circuit in an Electronic Design. The main integrated circuit is the 4017. The...
This preamp was found in an old English publication. Any usage JFET can be employed. The output is high...