WTSU

It broadcasts a classical music format as the flagship station of the Troy University Public Radio network.

[4] WTSU started broadcasting on March 1, 1977, as the state's third public radio station (the callsign stands for the university's name then, "Troy State University,"[5] a part of the Alabama higher education system), and the first south of Birmingham.

The station was assigned the call sign "WTSU" by the Federal Communications Commission (FCC).

[6] WTSU originally broadcast at 90.1 MHz with a power of 50,000 watts; by 1981, it moved to its present frequency of 89.9, doubling its wattage to 100,000.

Troy University Public Radio discontinued the easy-listening daytime format in 1993.