Found in Popular Electronics, this sophisticated short-wave receiver requires a lot of skill from an eventual assembler. The coils are commercial types of the time, used in commercial radios.
This common configuration is one of many that can be found in this section using the 555. The...
This circuit converts signals from the longwave band of 350 kHz to 500 kHz to 4.35 to 5MHz. The...
This amplifier was obtained in an Electronics Now based on the LM1875. The circuit must be powered...