satellite of NPR network affiliate WVTF. In addition, WACO-FM is also one of a small number of call signs whose beginning letter deviates from FCC standards of W in the East and K in the West. Originally the WACO call letters were on an AM radio station that went on the air in Waco in 1922 as WJAD, but later changed to WACO. In the early days of broadcasting, radio stations in Texas were given call signs beginning with W. The border between Texas and New Mexico had been part of the dividing line between W and K. By 1923, the border had been moved to the Mississippi River, putting Texas in K territory. But stations already on the air, such as WOAI San Antonio and WBAP Fort Worth, were allowed to keep their W call signs. In 1960, when AM 1460 WACO added an FM counterpart, that station was able to share its unique call letters, with an -FM suffix. In 1996, WACO (AM) changed its call letters to KKTK and later moved into the Dallas-Fort Worth Metroplex radio market as KCLE. WACO-FM was allowed to keep its call sign, which it operates under to this day. References External links WACO-FM official website µWACO-FM Country radio stations in the United States Radio stations established in 1965 1965 establishments in Texas IHeartMedia radio stations