RCA na Sarnoff enwetala ihe ngosi site na iwebata telivishọn elektrọnik niile na ọha na eze na 1939-40 New York World's Fair, n'otu oge ahụ na-amalite usoro ihe omume mgbe niile na NBC-RCA telivishọn na New York City. Onye isi ala Franklin D. Roosevelt pụtara na ngosi ahụ n'ihu igwefoto NBC, na-aghọ onye isi ala mbụ nke United States ịpụta na telivishọn na Eprel 30, 1939 (e nwere ezigbo foto nke FDR na telivishọn dị na David Sarnoff Library). A na-agbasa mgbasa ozi site na ụlọ ọrụ telivishọn NBC nke New York WBS2X Channel 1 (WBCN-TV; ugbu a WBCN, ọwa 4) na ihe dị ka ndị na-ekiri 1,000 na-ahụ ya n'ime ihe dị ka kilomita 40 (64 kilomita) site na ebe WNBC na-agbasa ozi na New York State Building. Ajụjụ: Gịnị ka WNBC na-eme site na mbụ?
Ụlọ elu Empire State