This simple radio uses few components due the direct coupling of the transistors. Coil is formed by 80 + 20 turns of 26 or 28 AWG wire on a ferrite core. Earphones must be high impedance type. Two 1.5 V cells are used to power the circuit.
This simple radio uses few components due the direct coupling of the transistors. Coil is formed by 80 + 20 turns of 26 or 28 AWG wire on a ferrite core. Earphones must be high impedance type. Two 1.5 V cells are used to power the circuit.
