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The Radio was one of the most instrumental pieces of equipment in 1920s publicity and broadcasting. It was first developed long before in 1879, but it was bulky, noisy, and had poor reception. After being later revamped with new vacuum tubes and rectifiers, the radio was honed into the interesting little device that made it into such a craze during the 1920s. After this renovation signals could be transmitted and received with improved clarity around 1920. This was what first began the idea of public radio in the United States. After this upraise the first public radio broadcasting station opened in Pittsburgh in 1922. It became an instant success