It’s then a simple matter of hooking up the right pads on the credit card to the rest of a crystal radio circuit, and you’re all set. Of course, [Billy] goes the whole hog, building the entire ...

Get back to basics and make a crystal radio. Learn about resonant circuits, experience history, wind high Q inductors, make antennas, and experience the fundamentals of wireless design.

The Crystal Radio Awards honors a radio station's year-round commitment to community service. This article, NAB announces Crystal Radio Award winners for 2025, was first published at The Desk. To ...