 Mission Broadcasting, the station's owners, added an FM signal, WJOK, which was partially simulcast for a time, and later became WIGL with a totally separate format.In the early 1980s, the station was sold from Mission Broadcasting to Metroplex, owners of top 40 Y-100.Call letters were changed to WHTT and the station broadcast a black oldies format, with emphasis on Motown and Soul, and simulcasted Y-100 overnights.