W288CX at 105.5 MHz. It is powered at 250 watts on a tower at 492 feet above average terrain. According to Radio-Locator.com, it covers Columbia as well as South Congaree, Cayce, Springdale and St. Andrews.
iHeart has put some decent money into the network, hiring good anchors and a few commentators. You do get the feeling everything is prerecorded. All segments must be timed to fit into the automated news wheel.
But in a market like Columbia that has no all-news station, only an NPR news/talk outlet and a couple of conservative talk stations, this might be a good option for anyone, black or not, who wants to hear an all-news format.