Q–Why is it not permissible to turn on a portable transistor radio or television on an airplane? A–All portable television and FM radios emit as well as receive electronic signals. When those radiated ...

Happy 50 th birthday to the transistor radio. For the last half-century we’ve embraced transistor radios, loved them, made them part of our lives and even took them for granted. But back in 1954, the ...

If you cultivate an interest in building radios it’s likely that you’ll at some point make a simple receiver. Perhaps a regenerative receiver, or maybe a direct conversion design, it’ll take a couple ...

How did most people hear radio news reports in the 1920s-1940s? Families sat in their living rooms and listened to very large receivers. But on December 16, 1947, three scientists helped develop the ...

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 ...