This circuit is from a Radio Electronics from April 1964. The circuit uses power transistors of the time, which must be mounted on a good heat radiator. Modern equivalents can be used.
This simple MW radio circuit with two transistors was obtained in an Argentine publication from...
This circuit operates at a voltage of 1.3 V from a single mercury cell. We found in an old...
This shortwave preselector was found in the July 1994 issue of Radio Electronics magazine. The...