A look at how NBC’s radio studios at 711 Fifth Avenue were designed and constructed. Before the move to 30 Rockefeller Plaza in 1933, NBC’s called 711 Fifth Avenue home for five years, although they had custom built this location only 5 years before. While still crowded into their first office and studio location at WEAF, in the AT&T Building on 19th Street, they were making big plans, and here they are.