WDEF (1370 AM, "Fox Sports Radio 1370") is a radio station serving the Chattanooga, Tennessee, area. The station is currently owned by Bahakel Communications along with WDEF-FM, WDOD-FM, and WUUQ.WDEF has long been the sister station to WDEF-FM and was the sister station to WDEF-TV, before being spun off from the CBS affiliate in the 1990s. It signed on December 31, 1940 at 1400 on the AM dial, and was moved to 1370 in the late 1940s.