rock KMGX "Magic 94." But with music listening moving to FM radio, the station's owner, Grabet Radio Enterprises, wanted to make a change. In July 1981, AM 940 switched to a news/talk format, taking the KNST call letters. A few years later, 940 AM was sold to Nationwide Communications, a subsidiary of Nationwide Insurance. KNST carried talk shows from the ABC Talk Radio Network, broadcasting on 940 AM until it was moved to 790 AM on April 4, 1993. The 790 frequency has more power and a larger coverage area. Today, 940 AM is the home of KGMS, a Christian radio station. Expanded Band assignment On March 17, 1997 the Federal Communications Commission (FCC) announced that eighty-eight stations had been given permission to move to newly available "Expanded Band" transmitting frequencies, ranging from 1610 to 1700 kHz, with KNST authorized to move from 790 to 1700 kHz. However, the station never procured the Construction Permit needed to implement the authorization, so the expanded band station was never built. Later history Nationwide later sold its Tucson stations, including KNST, to Tucson Radio Partners, which in turn was absorbed by Prism Radio and then Clear Channel Communications in the 1990s. KNST was the radio flagship station for University of Arizona men's basketball and football play-by-play from about 1984 until 2004, when the broadcasts moved to all-sports KCUB, branded as "1290 The Source". References External links Official website FCC History Cards for KNST (covering 1956–1980 as KCTU / KRTU / KCEE) NST News and talk radio stations in the United States Radio stations established in 1963 1963 establishments in Arizona IHeartMedia radio stations