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Nearly a century has passed since the first commercial radio broadcast went out over the airwaves. Aside from the invention of frequency modulation in the early 1930s and advances in recording and music playback devices, radio technology had remained much the same -- that is, until the late 1990s, when iBiquity Digital developed HD radio, a hybrid system that sends out bundled digital and analog signals. If you have not heard of HD radio, you are not alone. In development for about 10 years, the new radio technology has flown beneath the public's radar.
Crutchfield has a JVC car receiver with an HD tuner for $160. Not a bad price to try out the new technology.