In what year did NBC begin regular television transmission to the American public? July 18, 2020September 3, 2011 by Pamela Landy NBC began regular television transmission to the American public in 1939. Related Answers When did NBC begin national nightly newscasts? On what TV series was William Shatner a regular before “Star Trek” (NBC, 1966-69)? During what years was Goldie Hawn a regular on “Rowan & Martin’s Laugh-In” (NBC, 1968-73)? How much television does the average American watch? Was public kissing ever a crime in the United States? When did Johnny Carson take over NBC’s “Tonight Show” (NBC, 1954)?