WMMR's license was transferred to Metropolitan Broadcasting Corporation on October 22, 1986. On October 26, 1987, Metropolitan Broadcasting applied for a construction permit to change the transmitter location to "Building Rooftop 1650 Market St., Philadelphia, PA" (the address of One Liberty Place) and increase the station's HAAT to . The FCC granted the permit on May 1, 1989. On October 26, 1989, WMMR was purchased by Group W. Radio Acquisition Company, with the sale consummating on December 7, 1989. Group W. Radio modified the construction permit on February 12, 1992, by decreasing the HAAT to and changing the ERP to 18,000 watts. The FCC granted the change on March 9, 1992. The FCC granted a new license with the new facilities on January 6, 1997.