KTNO (620 kHz) is a commercial AM radio station licensed to Plano, Texas, and serving the Dallas/Fort Worth Metroplex. The station airs a Spanish Christian radio format known as "Radio Luz" and is owned by the Salem Media Group. Studios and offices are on North Belt Line Road in Irving. The transmitter is located on County Road 409 in McKinney. History KWFT in Wichita Falls (1939-1994) The station originally had its start in Wichita Falls, Texas, as KWFT. It signed on in 1939 on 620 kilocycles and broadcast in Wichita Falls until 1994. KWFT was the first radio station to continuously operate in the city and was a regional channel that could be heard across a large geographical area of Texas and Oklahoma during the daytime. The station was a CBS Network affiliate. On December 19, 1947, the Federal Communications Commission approved the sale of KWFT from Mr. and Mrs. Joe P. Carrigan, Laura Lou Carrigan and Mrs. Elizabeth Carrigan Simpson to Edward H. Rowley, H.J. Griffith and Kenyon Brown, operating as KWFT, Incorporated. In 1953, KWFT joined other radio stations in the United States by plunging into the new medium of television. KWFT-TV signed on the air on March 1 and was the first television station in the Wichita Falls. Just as its AM counterpart was a CBS radio affiliate, KWFT-TV was an affiliate of the CBS television network. KWFT sold the TV station in 1956 at which time it became KSYD-TV and later KAUZ-TV in 1963, continuing as the CBS affiliate for the Wichita Falls-Lawton market. KWFT Radio focused on local and national news, weather, farm reports and middle of the road music. However, as FM radio became more popular for music listening in the 1980s, it cut into KWFT's audience and advertising dollars, leading to the sale of the station in the mid-1990s to a new owner who had other plans for the station. KWFT signed off at 11:59 p.m. on December 24, 1994. KAAM and KMKI in Dallas About two years later, the 620 frequency formerly licensed to Wichita Falls returned to the airwaves licensed to Plano, a suburb in the Dallas-Fort Worth Metroplex. The new call sign was KAAM. It was owned by Collin County Radio L.C. and it aired an adult standards format. KAAM was sold to The Walt Disney Company for $12 million and switched to the Radio Disney children's radio format on