This good receiver contains 6 coils wrapped in ferrite rods. L1 has 20 turns of wire 28 and L2 / L3 has 80 + 20 turns of wire 28 in the same core with socket on the twentieth turns. L4 has 20 turns of wire 20 and L5 / L6 80 + 10 turns of the same wire. The circuit is listened to on a crystal phone or high impedance with excellent sensitivity. The variable is a MW double type.
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