WKAF is a radio station in the Boston, Massachusetts market licensed to Brockton, Massachusetts, simulcasting the mainstream rock format of WAAF. It broadcasts on 97.7 MHz, and serves the Metro Boston and South Shore areas of Massachusetts, which are unable to receive WAAF's main 107.3 MHz signal. The station's studios are located in Boston's Allston district and the transmitter site is atop Great Blue Hill.