An old — on second thought, make that “very old” — Sony AM/FM broadcast transistor, which I somehow acquired, finally got a little too cranky for me, Figure 1. The analog-dial tuning knob was sluggish ...

The invention of the transistor revolutionized radio, allowing receivers to be made far more compact and portable than ever before. In the middle of the 20th century, the devices exploded in ...

Ernie Baum of Hasbrouck Heights was 13 years old when tragedy struck. “I went with my family to visit my father’s aunt in Manhattan, and someone broke into our car and stole my transistor radio,” he ...

My first battery-powered radio — a ten-transistor Realtone — came from my Aunt Ina when I was about seven. I used to think I was ten, but the songs from 1973 would be wrong: I distinctly remember ...

Q: I would like a battery-powered FM transistor radio for my bathroom counter. I had one with decent sound but it quit working, and the ones I have tried since all have sounded tinny. It doesn't need ...

Long before podcasts, smartphones, social media, gossip blogs and on-demand news, the portable radio set was the world’s most trusted companion. It was the device that sat on kitchen shelves, ...

Traditional AM / FM radio isn't as popular as it once was, but these apps are keeping the legacy alive and well. You don't need a bedside radio clock or a transistor radio to enjoy local music, sports ...

Transistors have come a long way. Like everything else electronic, they’ve become both better and cheaper. According to a recent IEEE article, a transistor cost about $8 in today’s money back in the ...

Here is a simple circuit for a one transistor Audion type radio powered by a 1.5 V battery. It employs a set of standard low-impedance headphones with the headphone socket wired so that the two sides ...