WGST AM 640 ("Talk 640 WGST") is a radio station licensed in the city of Atlanta, Georgia. WGST is a Class B station operating on the frequency of 640 kHz with 50,000 watts of power during the daytime, and 1,000 watts of power during nighttime hours; a two-tower directional antenna is used, with differing patterns daytime and nighttime based from its transmitter site in West Atlanta. The station broadcasts from studios located at the Peachtree Palisades building in the Brookwood Hills district of Atlanta, and is owned by the iHeartMedia, Inc. subsidiary Citicasters Licenses (formerly part of Jacor Communications), and serves the Atlanta metropolitan area media market with a talk radio format.