In the Air – EverywhereA Household UtilityA Toll on RadioBirth of the NetworksConflict in the AirRadio Prospers during the DepressionRadio during World War IITelevision AppearsA New DirectionRadio Rocks and RoarsFM’s AscentAM StereoNoncommercial/Public RadioProliferation and Frag-OutProfits in the AirEconomics and SurvivalConsolidations, Downsizings, and ClustersBuying and SellingDigital and HD Radio RevolutionSatellite and Cable RadioInternet RadioMobile Music ServicesLPFM (Low-Power FM)Radio and Government RegulationsJobs and Equality in RadioCHAPTER HIGHLIGHTSSUGGESTED FURTHER READING