Originally, this circuit is from an English magazine, but I found it in Argentina's Radio Chassis Television Magazine in a 1978 issue. The coil consists of 80 to 100 turns of 28 thread on a ferrite stick and on the output we can both plug in a headset. crystal like the input of an amplifier. For weaker stations use an antenna. Binding of the variable to the shape coil indicates low selectivity. See CIR1386 for greater selectivity. The equivalent to BC108 is BC548.
