KEPR-TV went on the air for the first time December 28, 1954 as a satellite of KIMA-TV. It was owned by Cascade Broadcasting Company, which also owned 40 percent of KWIE (610 AM) in Kennewick. Cascade bought the remaining 60 percent of KWIE in 1956 and changed its call letters to KEPR, matching the television station, the following year.