Complex sentence: WTAM is a clear-channel station that reaches much of eastern North America at night; as such, WTAM often identifies itself as The Big One, a name borrowed from Cincinnati sister station WLW.
Split into simpler sentences: WTAM is a clear-channel station that can be heard across much of the eastern half of North America at night. As such, WTAM often identifies itself as The Big One, a name borrowed from Cincinnati sister station WLW.