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Survive the End Days
Cut one end off of the handset cord to remove one of the modular telephone
connectors. There will be four wires inside. If you are lucky, they will be color coded, and we
will use the yellow and black wires. If you are not lucky, the wires will be all one color, or
one will be red and the others will be white. To find the right wires, first strip off the
insulation from the last half inch of each wire.
Then take a battery such as a C, D, or AA cell, and touch the wires to the battery
terminals (one wire to plus and another to minus) until you hear a clicking sound in the
handset earphone. When you hear the click, the two wires touching the battery are the two
that go to the earphone, and these are the ones we want.
Attach one handset wire to the free end of the Germanium diode. Solder it if you can.
Attach the other wire to the wire from the top of the bottle. Soldering this connection is
a good idea, but it is not necessary.
coil.
Now clip an alligator jumper to the antenna. Clip the other end to one of the taps on the
Clip another alligator lead to the wire coming from the top of the bottle. This is our
'ground' wire, and should be connected to a cold water pipe or some other metal object or
wire that has a good connection to the earth.
At this point, you should be able to hear radio stations in the telephone handset. To
select different stations, clip the alligator jumper to different taps on the coil. In some
places, you will hear two or more stations at once. The longer the antenna is, the louder the
signal will be. Also, the higher you can get the antenna the better.
Now that your radio works, you can make it look better and be sturdier by mounting it
on a board or in a wooden box. Machine screws can be stuck into holes drilled in the wood
to act at places to attach the wires instead of soldering them. A radio finished this way looks
like the following photo. Note the nice little touch of using brass drawer pulls on the machine
screws to hold the wire.
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