Journal Editorial Report: The week's best from Adam O'Neal, Mary O'Grady, Joe Sternberg and Dan Henninger. Images: AFP/Getty Images Composite: Mark Kelly You’ll occasionally see them at flea markets ...

At the height of the Cold War, those of us on the western side of the wall had plenty of choice over our radio listening, even if we stuck with our country’s monolithic broadcaster. On the other side ...

So What Was the Transistor Good For? Transistors may have been useful to the phone company and to a handful of scientists building computers, but that wasn't enough to build an industry. Companies ...

Last week, I wrote about the state of the art in radio: Software-defined radios, which use software to do the job that mechanical parts do in older radios. Most, if not all, modern designs incorporate ...