1970, before switching to a Top 40 format in 1973. On November 9, 1976, the station made its final format change, adopting a news and talk-based schedule (as "Newstalk 570"). WFAA (AM) was initially based its operations in a 9×9-ft tent on the roof of the Dallas Morning News headquarters, before relocating to the newspaper's library. On October 1, 1925, it later moved to the 17th floor of the Baker Hotel at the southeast corner of Commerce and Akard Streets in downtown Dallas (which would be demolished in 1980), and then moved to facilities atop the Santa Fe Railroad Warehouse on Jackson Street on June 20, 1941 (the building still has the "WFAA" calls clearly painted along a panel on the top floor). On April 4, 1961, it moved to the WFAA Communications Center at Young and Record Streets. On July 2, 1983, its call letters were changed to KRQX. WFAA-FM WFAA-FM signed on October 5, 1946 as KERA-FM (no relation to the current radio and television station using those call letters). It was the first FM radio station to sign on in Texas, although its roots can be traced back to two test stations that signed on years prior: an experimental trial that dated back to 1939, and experimental FM station W5X1C, which signed on October 15, 1945. By 1947, WFAA-FM had moved from its original frequency at 94.3 FM to a preferred location at 97.9. With FM broadcasting in its infancy, the station signed on and off the air for months—and even going silent for two years—at a time, before settling on a permanent broadcast schedule by 1965. Initially acting as a simulcast of the AM station, WFAA-FM programmed a MOR and Beautiful Music format until 1973, when it changed to album oriented rock (AOR) under the call letters KZEW-FM (branded as "The Zoo") on September 16, 1973. The station's concept and programming were initially under the direction of Ira Lipson, who brought in talent such as John LaBella and John Rody ("LaBella and Rody"), George Gimarc, Charley Jones, Dave Lee Austin, John B. Wells, Doc Morgan, Nancy Johnson, John Dew, John Dillon and Tempie Lindsey (Wells and Morgan would later serve as the respective primary and secondary announcers for WFAA television from the 1980s to the early 2000s; Wells primarily did news promos, while Morgan primarily did programming promos). The FM station shared facilities with WFAA-AM on