A crystal radio is basically a high Q resonator tied to an antenna and an envelope detector. These days the envelope detector is a point contact diode such as a 1N34 Germanium diode. The resonant ...

[Billy Cheung] decided to build a crystal radio using a rather ... you’re listening to AM radio. Oh, and don’t forget an antenna! [Billy] breaks down the details for anyone wishing to ...

The earliest and cheapest radio set for the home was the crystal set. The essential components were a fragile fine wire (the 'cat's whisker') acting as an aerial connected to a small piece of ...

The National Association of Broadcasters (NAB), the commercial broadcasting industry’s trade association, announced ten winners of its Crystal Radio Awards on Tuesday. The Crystal Radio Awards ...