WMNF is a non-commercial, community radio station operating in the city of Tampa in the U.S. state of Florida that broadcasts at the FM frequency of 88.5 MHz and streaming live. The station has been on the air since September 14, 1979, and has an effective radiated power of 6,650 watts from antenna 1,539 feet height above average terrain. WMNF hosts many concerts, speeches, films, and festivals, most notably the annual Tropical Heatwave Festival. The last Heatwave occurred in 2016.