Radio has come a long way from where it first started; anyone can agree to that. Radio first started out as sound coming from "a box." Technological change has recreated radio from this standpoint. Radio is no longer just sounds coming from a box, but sounds coming from many different devices. Everyone can find a way to listen to the radio.
Not only has technological change helped give radio a better sound, but it has helped radio become more widespread. Coming from just a box, it developed into more programs for a more wide-spead audience. More channels developed, and eventually when the Internet showed up, radio became more available. Satellite radio emerged, providing "commerical free" channels, and more channels for listeners. The Internet provides websites, such as Pandora, Myspace, etc, for users to listen to. More artists have been exposed because of technological change, letting radio become more free and available.
Radio in the 20's was mainly shows, like Woody Allen's favorite shows in the film Radio Days. Radio in the 20's emerged as entertainment; technological change took place, however, and radio advanced into more broadcasting for a mass audience. Eventually, the FM radio developed. FM radio provided a more clear sound. Music on the radio became more popular in the 50's because of FM; FM made it more enjoyable to listen to music. Broadcasting radio faded away, while music took hold of the radio industry. Technological change was a huge part in this because it provided more uses of the radio.
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