debuting to middling ratings that then continually declined, WYOO went in a new direction in April 1974, spearheaded by new general manager Mike Sigelman, the former sales manager of KDWB. A shift to an adult contemporary was met with even lower ratings; with management seeing a gap for a Top 40 station on FM, both stations flipped on August 26, 1974, during a remote broadcast from the Minnesota State Fair. The new "U100"—intended to be "Y100", only for WHYI in Miami to order them to cease and desist—quickly became a competitive station in the market. U100 was not to last forever. The AM dial in the Twin Cities was crowded with top 40 stations, with U100, KDWB, WDGY and KSTP all fighting for the same audience. AM music stations also desired to transition to the increasingly popular FM dial. In early 1976, Fairchild Industries decided to put both stations on the market. Entertainment Communications, Inc., the owner of easy listening station WAYL (93.7 FM), was interested in the AM station to simulcast WAYL's signal, but it could not buy a second FM station in the market under the rules of the time. This meant that Fairchild needed to find a buyer for the FM station; the company sought out the owners of various AM stations in the area. Doubleday Broadcasting, owner of KDWB, was not actively seeking an FM station at the time, but offered to buy WYOO-FM in February 1976 after it was offered a rather generous deal that included the FM station and the building in Eagan that housed both stations for $850,000. KDWB's general manager at the time, Gary Stevens, said that it did not buy WYOO-FM to shut down a competitor, but rather to take advantage of what it saw as a good deal. The AM station was then sold to WAYL for $625,000. "U100" signed off for the last time at midnight on September 15, 1976, and under PD John Sebastian, KDWB morning personality Dave Thomson launched the KDWB AM/FM simulcast the following morning at 6:00 with "Bad Blood" by Neil Sedaka as the first song played following the pre-recorded piece announcing the change. Continuous AM and FM simulcasts in large markets (stations licensed to cities with populations over 100,000) were not allowed by the FCC since 1965. However, KDWB's simulcast was permitted under the terms, conditions and FCC rules of the time via a