WRFF (104.5 FM, "ALT 104.5") is a commercial FM radio station in Philadelphia, Pennsylvania. The station is owned by iHeartMedia, and broadcasts an alternative rock radio format. The studios are in Bala Cynwyd. WRFF has an effective radiated power (ERP) of 11,500 watts. The transmitter tower is in the Roxborough section of Philadelphia at (40°02′30.9″N 75°14′21.9″W / 40.041917°N 75.239417°W), WRFF broadcasts using HD Radio technology. The HD-2 digital subchannel carries the sports radio format of sister station WDAS 1480 AM "The Gambler".