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Econ04
jmluber writes in with another radio project -

In the old days, people used radios that used a germanium diode (crystal radio) to receive am radio without the need for a battery (the radio wave powers this type of radio). This site modernizes that concept by showing you how to build a shortwave radio that utilizes a germanium diode.

Build a crystal shortwave radio – Link.

Related:

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Make a Foxhole Radio – Weekend Project Podcast – Link.

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Make a Foxhole Radio – Weekend Project PDFcast – Link.

Phillip Torrone

Editor at large – Make magazine. Creative director – Adafruit Industries, contributing editor – Popular Science. Previously: Founded – Hack-a-Day, how-to editor – Engadget, Director of product development – Fallon Worldwide, Technology Director – Braincraft.


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