The station's studios are located on Steven Drive in northwestern Macon, and its transmitter is located on GA 87/US 23/US 129 ALT (Golden Isles Highway), along the Twiggs–Bibb county line.

The station first signed on the air on November 30, 1990, as an independent station owned by the locally based Macon Urban Ministries, doing business as Good News Television.

The station was sold to the Christian Television Network in February 2004; despite this, the new owner maintained the UPN affiliation and some syndicated secular programming, along with an overnight affiliation with the Shop at Home Network, though religious programming has always made up the bulk of WGNM's broadcast schedule.

CTN completed the withdrawal on September 2, 2006, and switched to originating a fully religious schedule.

On February 1, 2008, WGNM turned off its analog transmitter and began broadcasting exclusively in digital.