1996. WCOL-FM 92.3 played album-oriented rock music. Largely because of the demise of AM radio, Great Trails abandoned Top-40 music on its AM station and moved it to its FM signal. WCOL-FM changed its call letters to WXGT and became more commonly known as 92X, Columbus' first and most popular contemporary hit radio station. It was largely due to the success of 92X that Great Trails made the decision to bring the format to Dayton. WXGT and WGTZ were virtual clones of each other, using similar playlists, imaging, personalities, jingles and even station logos. WGTZ's studios are located at 717 E. David Road in Kettering, the same location as its AM sister WING with its transmitter moved in 1985 to Brookville between Eaton and Englewood, where it broadcasts at 40,000 watts. It currently shares its studio location with Urban Contemporary WDHT, Urban AC WROU-FM, and Modern AC WCLI-FM. On May 17, 2007, Philadelphia-based Main Line Broadcasting announced the acquisition of Radio One's stations in the Dayton and Louisville market areas. Main Line took over the Dayton stations on September 14, 2007. Throughout the 2000s, WGTZ repeatedly jabbed at what was then known as WDKF for not having local DJs or contests with local winners and being controlled by Clear Channel’s corporate operations. WDKF responded with similar messaging on its own station. Z-93 morning shows John King and Terry Dorsey (who originally broadcast afternoons at WING) came to Z-93 in 1984 as the first "Morning Crew" for a year. King was also PD of Z-93 during this time. They were followed by "Dr. Dave" Gross and "Wild Bill" taking the reins from March 1985 until September 4, 1987, when it became known as simply "The Z Morning Zoo". During their first ratings sweep, "Dr. Dave" and "Wild Bill" doubled the morning show's Arbitron ratings, and within one year became the first morning show in Dayton radio to unseat the #1 ranked WHIO morning show (hosted by the legendary Lou Emm for over 40 consecutive years). Alan Kaye replaced Wild Bill as Dr. Dave's side-kick on September 7, 1987. Dr. Dave would leave in March 1990, replaced briefly by Humble Billy Hayes. In June 1990, night jock Joe Mama replaced Hayes. Todd Hollst, who was doing overnights, began producing comedy bits & doing stunts for the show. In March 1991, Alan Kaye would be fired under controversy by GM David Macejko, which