This PNP transistor power stage was found in the May 1969 issue of Radio Electronics magazine. The circuit uses a transformer for excitation and requires 10W input for full output power.
This circuit is from an English publication from 1973, but can be easily assembled today. 2N718 can...
The integrated circuits used in this 1989 project are uncommon today, including the IF coil that...
We found this receiver for the 144 MHz band in a European publication from the 1970s. The circuit...