The station went on the air as KTAC ("85 KTAC") in 1960, and was a Top 40 competitor to KJR-, KING and KOL throughout the 1970s. Don Wade, Robert O'Smith, John Williams, Ron Erak, Bruce Cannon, Bob Case and Ric Hansen were among the air personalities during its Top 40 dominance of the south Puget Sound area. The calls changed to KMTT on June 19, 1992, simulcasting with then-sister station KMTT-FM (103.7 The Mountain). Entercom sold the station to Southwave Wireless, LLC (Steve West and Dan Walker) in 1996, and on March 11, 1996, the station changed its call sign to the current KHHO and launched a news/talk format (K-H-2-O, The Voice of the South Sound) featuring Manda Factor, Jeff Walker and Bruce Cannon. In 1998, the station was acquired by The Ackerley Group and adopted an all-sports format.