WTAC, owned by Superior Communications, began broadcasting in 2002 on 89.7 with 1 kW. Officially licensed to Burton, Michigan, the station's transmitter was located in the Beecher area on the north side of Flint, Michigan until September 2011 when it moved south of Fenton, Michigan and increased its power to 15 kW.
On September 10, 2007, the station submitted an application to the FCC to increase power to 4 kW from a directional antenna. The application was amended on October 30, 2007 to 5 kW and approved on March 31, 2008. A minor change to the CP was approved on March 17, 2010, to increase power to 25 kW from a tower near Holly. This was further modified on March 18, 2011, to 15 kW from a 50 meter tower. The station was granted its license to cover for the new location on September 22, 2011. The increased power and new tower location improves reception south of Flint.
The call letters WTAC were used by AM 600 in Flint when it was a popular top 40 station during the 1960s and 1970s, and subsequently through country and contemporary Christian formats. That station is now WSNL. An online version of the old top 40 WTAC is available online at www.thebig6WTAC.com