before resuming when that station moved to 800 kHz in 1929 and settling when WBAP moved its current frequency at 820 kHz in 1941. In 1947, WFAA and WBAP began time-sharing on a second frequency, 570 kHz, which was formerly occupied by KGKO. Until WFAA (AM) began to transmit full-time on 570 kHz in 1970, WBAP and WFAA were engaged in the somewhat bizarre situation of having to switch back and forth between the 570 and 820 frequencies at various times of the day: WBAP broadcast on 820 AM from midnight to 6:00 a.m., with WFAA taking over the frequency space until noon; WBAP returned to the 820 signal for a few hours, before WFAA once again took over the frequency. WFAA had control over 820 during prime evening hours, when the 50,000-watt clear channel signal could often be heard as far west as California and as far east as New York (at the time, there were significantly fewer radio stations that were operating at night, reducing the likelihood of interference). WFAA was the first radio station in Texas to join a national network (becoming an affiliate of the NBC Red Network in 1927, four years after it agreed to join the network), co-founded the Texas Quality Network, and was the first Texas station to carry educational programs, to produce a serious radio drama series, to air a state championship football game and the first to broadcast an inaugural ceremony (that of Texas Governor Ross Sterling in 1931). The station's original on-air staff members and reporters consisted of columnists and editors employed with The Dallas Morning News. WFAA (AM) was home to the long-running morning program, The Early Birds, hosted by John Allen (and which was one of the early appearances by Dale Evans, who would later go on to star in several western films with actor husband Roy Rogers); as well as programs such as the gospel music series Hymns We Love, hosted by Norvell Slater; music programs Saturday Night Shindig, The Big D Jamboree and Slo-and-Ezy; the agricultural news program Murray Cox RFD; and later, 57 Nostalgia Place. Many of the early Dallas television pioneers began their careers at WFAA radio, including Ed Hogan, one of the most well-known personalities in Dallas during the early years of television. After maintaining an entertainment/variety format for many years, the station became a Middle of the Road (MOR) music station in