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Build an antique style crystal radio

Step 9How to use the radio

How to use the radio
1) Start off by connecting up the antenna and ground. For the antenna you can use anything from a long piece of wire tacked up along the top edge of a wall to a nice long outdoor wire antenna. The ground can be any suitable ground connection, ie the center screw on a power outlet, a iron cold water pipe or an outdoor ground spike driven 5 feet into the ground.
2) Connect up the headphones.
3) Mount a small piece, about 1/4", of iron pyrite in the jaws of the detector and position the cats whisker so that it is touching the surface of the iron pyrite. If you are using a germanium diode install it in the Fahnstock clips with the band facing the antenna and ground binding posts.
4) Turn both knobs all the way to the left and select the 1st tap contact. Start turning the left tuning knob slowly to the right and see if you can find a station, if you find a station but it is towards the high end of the dial move the tap selector up one and turn the tuning knob down until you find it again.
5) If you are using the antique style detector and the signal is coming in very weakly you can try moving the cats whisker around on the surface of the iron pyrite until it comes in more strongly, this well take some trial and error until you find were it works best.
6) If you are receiving two stations at once and one is drowning the other out you can use the ground coupling knob to help single out one or the other.
7) Make a logbook of what settings brought in what stations, this well help finding the station again later.
8) Fiddle with it, it takes some practice to tune these kinds of radios and remember the only thing powering the radio is the radio waves received by the antenna so the signals well not always be that loud but a nice long antenna well collect more energy producing louder signals.
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2 comments
Sep 8, 2011. 6:12 AMclovisfiesta says:
You are very capricious. Congratulations on the project.
Sep 26, 2010. 3:59 PMriverreaper says:
mabey ill just put the scanner in a nice looking box like that one an pretend like when i was a kid :O)

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