Remember When Radios Couldn't Stay Tuned? RCA Fixed It in 1946
In 1945, American families constantly retuned their radios as programs drifted into static—something everyone assumed was unavoidable. Then in 1946, RCA engineer David E. Smith discovered the surprising cause: heat inside the radio caused key components to shift, making stations drift. By inventing a simple, eleven-cent temperature-compensating capacitor, he solved the problem completely. This video tells the story of how radios went from frustrating appliances to reliable entertainment, how one engineer’s obsessive measurements changed electronics forever, and how the fix that nobody noticed became the foundation for TVs, car radios, FM receivers, and modern wireless technology. From the Superheterodyne design of the 1920s to temperature-compensated electronics that power today’s devices, discover the hidden story behind the innovation that made your radio—and modern electronics—stay tuned.
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