Old radios are devices used to receive and play audio broadcasts, primarily music and news. They became popular in the early 20th century and were a key source of entertainment and information before the rise of television. Many old radios feature wooden cabinets and analog dials, giving them a vintage charm. These radios operate using AM (Amplitude Modulation) and FM (Frequency Modulation) signals. Collectors often seek out models from famous brands like Philco and Zenith, appreciating their craftsmanship and historical significance. Restoring old radios has become a hobby for many, allowing enthusiasts to preserve a piece of audio history.