Radio WLUM-FM (Milwaukee's Alternative Station)

WLUM-FM (102.1 FM) is a commercial radio station in Milwaukee, Wisconsin. The station airs a Alternative rock music format branded as "FM 102.1".

This frequency is one of the oldest FM stations in Milwaukee. The owner of the Milwaukee Journal was an early pioneer of FM broadcasting. Experimental station W9XAO went on the air in early 1940. By 1942, the station had become W55M, with programming separate from sister AM station WTMJ and with its own 50 kW transmitter site in Richfield, Wisconsin. The station made the transition to the 88-108 MHz band after the war (at 102.1 FM) but struggled for many years, especially as the company had begun focusing on their new television station. WTMJ-FM signed off the air in 1950, but later returned to the air at 94.5 FM in 1959.