WNAX (570 AM) is a radio station in Yankton, South Dakota, currently owned by Saga Communications, Inc., which broadcasts a news/talk format. WNAX broadcasts at 5,000 watts around the clock from a tower in eastern Yankton. Due to its location near the bottom of the AM dial, transmitter power, and South Dakota's flat land (with near-perfect ground conductivity) the station's 5,000-watt signal provides at least secondary coverage during the day to most of the eastern half of South Dakota, much of western Iowa, and most of the densely populated portion of Nebraska. In addition to its home markets of Sioux City and Sioux Falls, WNAX provides a strong grade B signal to Omaha and Lincoln. Under the right conditions, its daytime signal penetrates as far south as Kansas City, as far north as Fargo