THE RADIO HISTORIAN
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THE BEGINNINGS OF THE NBC NETWORK - 1927 TO 1933

The National Broadcasting Company made its inaugural broadcast from the ballroom of the Waldorf-Astoria Hotel in New York on November 15, 1926. The following year it moved into the twelfth and thirteenth floors of a new office building at 711 Fifth Avenue. NBC initially operated three networks: The Red Network served 30 stations in the East and Midwest; The Blue Network fed 26 stations in the same areas; and the Orange Network served 7 stations on the Pacific Coast from studios in San Francisco.

The period 1926-33 was incredible growth for network radio, as well as radio broadcasting in general. Advertising on radio was accepted for the first time, and the income this generated drove a huge expansion of the NBC network. Beginning with only a few hours of programs per week, NBC programming expanded by the early 1930's to fill the majority of the broadcast day for its 100+ affiliated stations. By 1933, having hopelessly outgrown its Fifth Avenue facility, the network moved into the world's largest broadcast studio complex at 30 Rockefeller Center.

Here are some images of NBC's operations from its inauguration in 1926 until its move to Radio City in 1933: