Bottle Radio

How to build a classic batteryless AM radio receiver

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In this nice video by makezine.com you will learn how to home brew a bottle radio, using principles of crystal radio.

A crystal radio is the distilled essence of a radio. It has very few part and it needs no batteries or other power source to run and as you can see in this video it can be built in a few hours out of things you can find around the house.