This Japanese radio is from the 60s, presenting excellent sensitivity and an output power of 100mW with 6 V power from ordinary batteries. The circuit is of the superheterodyne type.
With this circuit it is possible to excite direct current relays from an alternating signal,...
This circuit is from an old documentation. The integrated circuit can be replaced by a modern...
The FET can be a BF245, and the other transistors can be the BC548 and BC558 in this simple AM...