pulling radio signals out of thin air as if by magic. Not all crystal sets take this slapdash approach, of course, and some, like this homebrew multiband crystal receiver, aim for a feature set ...

I remember as a child building my first crystal radio and being astounded that I ... in neutral atom quantum computers is enabling a new generation of ultra-sensitive quantum radiofrequency ...

Jim has even created names for some of these radios, such as the ‘hobbydyne’ receiver which is available as a kit. Learning by building a crystal set is ubiquitous. A how-to book from East ...