The station debuted on July 31, 1960 as KSOO-TV, the third station in Sioux Falls. It was owned by the South Dakota Broadcasting Company along with KSOO radio and was an NBC affiliate with a secondary ABC affiliation. From 1960 to 1969, it operated as the flagship of a regional network with separately-owned KORN-TV in Mitchell (channel 5, now KDLT-TV on channel 46). KSOO-TV served the eastern portion of the market, while KORN-TV served the western portion. In 1969, the Federal Communications Commission forced the breakup of this network, and KSOO-TV became the sole NBC affiliate.