KZTB (97.9 FM, "La Gran D 97.9") is a radio station licensed to serve Milton-Freewater, Oregon, United States. The station, which began broadcasting in 1992, is currently owned by Amador and Rosalie Bustos and the broadcast license is held by Bustos Media Holdings, LLC. Programming KZTB broadcasts a Spanish-language regional Mexican format as part of Adelante's nationally syndicated "La Gran D" radio network. The station serves the greater Tri-Cities, Washington, area. The Tri-Cities area, dubbed the "Heart of Washington's Wine Country", is now home to an increasing population of Hispanics, primarily immigrants from Mexico. History The beginning This station received its original construction permit for a new 500 watt FM station broadcasting on 97.9 MHz from the Federal Communications Commission on December 14, 1987. The new station was assigned the call sign KUDO by the FCC on April 29, 1988. The assigned callsign for the still-under construction station was changed to KLUB on August 1, 1989. In April 1992, permit holder Nanette Markunas applied to the FCC to transfer the construction permit to Alexandria Communications. The transfer was approved by the FCC on October 2, 1992, and the transaction was consummated on October 16, 1992. While the transfer was in process, the callsign was changed, this time to KLKY, on September 21, 1992. After several extensions, the permit transfer, and an authorization to increase effective radiated power to 5,100 watts, KLKY received its license to cover from the FCC on May 17, 1993. Major chain ownership In June 1997, Alexandria Communications reached an agreement to sell this station to Citadel License, Inc., a subsidiary of Citadel Broadcasting. The deal was approved by the FCC on August 12, 1997, and the transaction was consummated on September 25, 1997. Between approval and consummation, the station's callsign was changed to KTHK on September 10, 1997. In February 1999, Citadel License, Inc., agreed to sell KTHK to Marathon Media, L.P. The deal was approved by the FCC on September 13, 1999. An October 1999 internal corporate realignment saw Marathon Media, L.P., apply to transfer the license for KTHK to Marathon Media Group, LLC. The transfer was approved by the FCC on November 8, 1999, and the transaction was consummated on November 9, 1999. In December 2000, Marathon Media Group, LLC, announced it had contracted to sell KTHK to Clear Channel Communications through its Clear Channel Broadcasting Licenses, Inc., subsidiary as part of a five-station