ɪnðə nˈaɪntiːnhˈʌndɹɪd fˈɪfti z, æz nˈɛtwɜːk ɹˈeɪdɪˌoʊ pɹˈoʊɡɹæmɪŋ bɪɡˈæn tə lˈuːz ɪts ɪmpˈoːɹtəns dˈuː tə tˈɛlᵻvˌɪʒənz pˌɑːpjʊlˈæɹᵻɾi, wˈæpi wˈʌn θˈaʊzənd sˈɛvənti ɪvˈɑːlvd.
In the 1950s, as network radio programming began to lose its importance due to television's popularity, WAPI 1070 evolved.