A crystal radio? Did you hook the antenna to the bedsprings and listen under the covers late at night to try to pick up some exotic distant station? Neat-o.

If you build a crystal radio without a long antenna and good ground, it’s not so much a crystal radio as soldering practice. Report comment. Reply. Miroslav says: September 17, 2016 at 7:50 am ...

Perhaps the simplest radio one can build is the crystal radio. Using a diode as a detector, the design generally uses less than 10 components and no battery, getting its power to run from the radio… ...

Dennis enjoys sharing the crystal radio receiver with young people today. When the York County History Center holds Family Days at the Agricultural and Industrial Museum, he will bring in a ...

A crystal radio set is almost like magic. Sound appears, seemingly out of nowhere, powered not by cords and batteries, but by the very air around you. “You can’t quite work out how it comes ...

The Gecophone Crystal Set No 1 is a simple variometer turned crystal receiver and has connection points for the aerial, earth and headphones. Work Type. Radio Communication. Date. 1923. Description.