 However, it must power down to 1,000 watts at night due to a large glut of clear-channel stations on nearby channels.This makes WFNZ hard to hear even in some parts of Mecklenburg County and all but unlistenable in much of the South Carolina portion of the market.Due to its nighttime signal limitations, UNC signed up WFNZ's former FM sister WRFX to simulcast Tar Heel basketball games from 2008 to 2011, as well as any football games kicking off after 5 PM.