WWDT became the first television station in Michigan and the sixth station in the United States to begin service, on this day in 1947. A few weeks later it changed its call letters to WWJ-TV to match its radio broadcast sister station, and is now known as WDIV Channel 4 in Detroit. The station would go on to produce the first telecast of Detroit Tigers, Red Wings and Lions games as well as the state’s first televised newscasts.