Originally this circuit is from an English magazine, but I found it in Argentina's Radio Chassis Television Magazine in a 1978 issue. L1 consists of 80 to 100 turns of 28 wire on a ferrite rod. At the output we can connect either a crystal headphone or the input of an amplifier. For weaker stations use an antenna. The integrated is the critical element of the circuit as it is difficult to obtain today. Use the BC548 instead of the BC108.
