Things You'll Need

Instructions

1

Cut off the jack from the end of your earphones in order to expose the two wires.
2

Separate the two wires, then use the wire stripper to remove about 2 inches of insulation from each wire.
3

Take one of the wires from the earphones and wrap it around one of the wires of the Germanium diode, then tape it in place.
4

Tape the other wire of the diode to a faucet or copper pipe.
5

Take the other earphone wire and hold it in your hand, then put the earphones in your ears. If you're close to a powerful AM radio station, you should be able to pick up the signal. If not, try taping the wire that you were holding to a bigger piece of metal, like a longer wire, a coat hanger or a screen.