The station signed on the air on September 1, 1955 as WGKA-FM. Owned by Glenkaren Associates, it was the FM counterpart of WGKA, with studios at 1140 Peachtree Street NE. WGKA-FM was the first full-time FM classical music station in Atlanta. In 1971, the General Cinema Corporation acquired WGKA-AM-FM. Even though it was a movie theater chain, GCC wanted to branch out into broadcast media. The classical music remained on the AM station, while the FM station became WZGC in 1972. WZGC began as an album-oriented rock station, which switched to Top 40 in March 1973, calling itself "Z-93." In the 1970s, many radios still only received AM signals. WQXI and WGST were the leading Top 40 stations in Atlanta, but as FM listening increased, WZGC gained an audience. The station was acquired by First Media Corporation in 1976. In the 1980s, the AM Top 40 stations switched to other formats, leaving WZGC as Atlanta's only contemporary hits station. Then, in 1986, WAPW debuted with its own popular Top 40 format, with WZGC's ratings declining as a result. The station switched to a Rhythmic Contemporary format during the summer of 1987, and then to classic rock on January 3, 1989, while retaining the "Z-93" moniker. Infinity Broadcasting acquired WZGC in 1992; Infinity was renamed CBS Radio in December 2005. The name change to "Dave FM" and format switch to adult album alternative came at 5 p.m. on July 21, 2004, following a stunt featuring all-Dave Matthews Band music. Dave's first song was "Orange Crush" by R.E.M.. WZGC installed an HD Radio transmitter in the early 2000s. The HD-2 subchannel carried an Americana format branded as "Dave Roots." Throughout its run as "Dave FM," the station maintained decent ratings, though it was never an overall winner. However, in the summer of 2011, the station saw a drop in its Arbitron ratings. At the same time, CBS had enjoyed success with several of its FM stations that had switched to all sports formats in Dallas, Boston, Detroit and Pittsburgh. Due to this, CBS announced in July 2012 that WZGC would flip to all sports in October. Dave's final day of programming, which started on September 29th after a three-day radiothon for Children's Healthcare of Atlanta, consisted of the on-air staff hosting final shifts, as well as a "Top 92 Songs of Dave FM" countdown. Around 12:20 a.m. on September 30th, Dave FM ended regular programming with "Little Lion Man" by Mumford & Sons and "Atlanta" by Butch Walker. The station ran on automation until the flip at 2 p.m. on October 24th. The final song on "Dave" was "Thank You Friends" by Big Star. Even though WZGC was owned by CBS Radio, it didn't affiliate with CBS Sports Radio at launch, as the network already had an affiliate in Atlanta on WCNN. Because of this, WZGC had local sports hosts around the clock, all week long. Eventually, WCNN became an ESPN Radio affiliate, and WZGC added CBS Sports Radio programming to its overnight schedule. On February 2, 2017, CBS Radio announced it would merge with Entercom. The merger was approved on November 9, 2017, and was consummated on the 17th.
