KNDO (channel 23) in Yakima, Washington, and KNDU (channel 25) in Richland, Washington, are television stations serving as the NBC network affiliates for Central Washington and Northeastern Oregon. They are owned by the Spokane-based Cowles Company as part of the KHQ Television Group. KNDO's studios are located on West Yakima Avenue in downtown Yakima, and its transmitter is atop Ahtanum Ridge; KNDU maintains its own studios on West Kennewick Avenue in Kennewick, with transmitter on Jump Off Joe Butte.
KNDU operates as a semi-satellite of KNDO, serving the Tri-Cities area. It simulcasts all network and syndicated programming as provided through its parent, and the two stations share a website. However, KNDU airs separate commercial inserts and legal identifications. Local newscasts, produced by KNDU, are simulcast on both stations. KNDO serves the western half of the Yakima–Tri-Cities market while KNDU serves the eastern portion. The two stations are counted as a single unit for ratings purposes. Master control and some internal operations are based at the studios of sister station, fellow NBC affiliate and company flagship KHQ-TV on West Sprague Avenue in downtown Spokane.[1]