WWSW-FM (94.5 MHz) – branded 94.5 3WS – is a commercial FM radio station in Pittsburgh, Pennsylvania. It airs a classic hits radio format and is owned by iHeartMedia, Inc. For most of November and December, WWSW-FM switches to all-Christmas music. WWSW is notable for being an FM "superpower station." Its effective radiated power (ERP) is 50,000 watts on a tower that is 247 meters (810 ft) tall. The normal height above average terrain (HAAT) for Class B FM signals found in Pennsylvania should be 152 meter (500 ft) for a station broadcasting at 50,000 watts.