WJLB (97.9 FM) is a commercial radio station in Detroit, Michigan. Owned by iHeartMedia, it broadcasts an urban contemporary radio format. The studios are on Halsted Road in Farmington Hills. In morning drive time, WJLB carries the syndicated Breakfast Club from co-owned WWPR-FM New York City. WJLB has an effective radiated power (ERP) of 50,000 watts, the maximum for most Detroit stations. The transmitter is in Highland Park near the intersection of Hamilton Avenue and Midland Street. It uses a tower at in height above average terrain (HAAT). WJLB broadcasts using HD Radio technology. Its HD-2 subchannel was called "Funkytown Radio," featuring rhythmic oldies. History W49D, WLOU, WMZK The station was initially authorized as W49D, with 1,000 watts of power at 44.9 megahertz. It began test broadcasts on May 7, 1941. Then, it officially signed on the air on . It was Michigan's second FM radio station. The station was owned by John Lord Booth, who was born in Detroit on June 13, 1907, and died in Grosse Pointe Farms on November 11, 1994, at the age of 87. Booth already owned an AM station, 1400 WJLB, and was a major stock holder in "Booth Newspapers of Michigan." That ownership caused a delay in the FM station's grant while the Federal Communications Commission (FCC) reviewed its newspaper cross-ownership policy. Effective November 1, 1943, the FCC modified its policy for FM call signs. The station call letters were switched to WLOU. On September 12, 1945, WLOU was assigned to 96.5 MHz. In June 1948, the station moved to 97.9 MHz, with the station's call sign changing WJLB-FM from 1947 to 1952 and from 1957 to 1958. From 1952 to 1957, it was WBRI. In 1958, the call letters were changed to WMZK, which was a play on the word music. The station aired a format of automated beautiful music. In later years, WMZK alternated between beautiful music and foreign-language programming for various ethnic groups. In 1979, the station carried the pro softball games of the Detroit Caesars. WJLB In 1980, the WJLB call sign returned for the third time, along with an Urban Contemporary format. It took over the urban sound from its sister station on the 1400 kHz AM frequency. WJLB (AM) went on the air as WMBC in 1926 and became WJLB in 1939. It had been providing programming geared toward Detroit's African-American community for nearly four decades. (WJLB