The AM broadcast band doesn’t have a lot of mainstream programming on it across much of the United States today. That’s a shame because a lot of kids got their first taste of radio and electronics by ...

A crystal radio is a common enough science fair project, but the problem is, there isn’t much on anymore. The answer is, of course, obvious: build your own AM transmitter, too. AM modulation isn’t ...

Back before cell phones … before video games … before television … even before electric radios, there were crystal radio receivers. In the early 1920s and 1930s, magazines offered instructions on how ...