wanted to get the station on the air as soon as possible, it was forced to delay the debut after the FCC began an investigation as to whether newspaper ownership of radio stations should be restricted. On May 6, 1941, the News was one of three newspapers given provisional permission, pending the outcome of the newspaper ownership review, to begin station operations. Following a short period of equipment tests, W45D began broadcasting on a regular schedule as Michigan's first FM station on May 13, 1941, when it launched a limited service of eight hours a day from noon to 8:00 p.m. An "informal dedication" program was broadcast six days later. Effective November 1, 1943, the FCC modified its policy for FM call signs, and the station call letters were changed to WENA. After the FCC created the new 88-108 MHz FM broadcast band, WENA was moved to 96.9 in September 1945. In 1947, the station settled on its present 97.1 assignment, and the call letters were changed to WWJ-FM, with programming originally simulcasting WWJ. Beautiful music (196?-1991) By the end of the 1960s WWJ-FM had separated programming and begun airing a beautiful music format with programming coming from Schulke Radio Productions (SRP), with which it enjoyed high ratings despite a glut of easy-listening competition in the market from stations such as WLDM, WJR-FM, WNIC and WOMC. In addition, during the 1970s WWJ (AM) simulcast WWJ-FM's programming during overnight hours. In November 1981, WWJ-FM changed its call letters to WJOI, which helped it distinguish itself more from its AM all-news sister station. WJOI's format remained beautiful music, although the station changed syndicators from the "FM 100 Plan" (distributed by Chicago's successful beautiful music station WLOO) to the Bonneville and later Schulke packages. WJR-FM's change to "Hot Hits" WHYT in September 1982 left WJOI (nicknamed "Joy 97") as Detroit's only beautiful music station. As a result, WJOI enjoyed consistent top ten or top five showings in the Arbitron ratings through most of the rest of the 1980s, and even reached #1 12+ in the Arbitron results in the spring 1984 book (1), topping WJR, at a time when the beautiful music format had nearly disappeared in other markets. Listenership eroded slightly in the late 1980s with the success of former top 40 giant CKLW's "Music of Your Life" format, but Joy 97 remained a consistent top performer in the ratings. CBS Radio