The station is licensed by the Federal Communications Commission (FCC) to the town of Harlem and broadcast on with an effective radiated power (ERP) of 5.7 kW.

WGAC-FM signed on in November 1992 as an alternative rock outlet named "Channel Z 95.1", giving the area its first station playing that type of music.

The "Channel Z" era of WGAC-FM from 1992 to 1996 has been referred to as the "purest form of rock ‘n’ roll to be found anywhere on Augusta airwaves.

The station signed a local marketing agreement on December 10, 1996 with Beasley Broadcasting (who later purchased it) and the format was flipped to 1970s oldies as "Z95".

[3] On August 10, 2011, WCHZ's rock format moved to 93.1 FM WGAC-FM, a much lower powered signal licensed to Warrenton, GA, moving the FM simulcast of the talk format from 93.1 WGAC-FM to the stronger 95.1 WCHZ.