point, Amon Carter accidentally stepped into an unmarked hole in the studio floor that led to the building's basement, narrowly saved from enduring potential injury by Star-Telegram cartoonist Johnny Hay. A power outage near the transmitter facility also knocked WBAP-TV off the air for 17 minutes around 8:00 p.m. Angry viewers subsequently called into the station, blaming engineers for an outage that was beyond their control; after the power problems were fixed, another viewer calling into the station complained to a receptionist about not being able to receive WBAP-TV's signal, not realizing that the television station could not be picked up through their radio receiver. Even still, Fort Worth Press reporter Jack Gordon wrote regarding the station's first night of programming that "part of Fort Worth's inaugural television show [...] looked like our first roll of home movie film. But a good deal more of it was excellent – enough so to convince the stubbornest critic that television is here to stay." Channel 5 originally operated from studio facilities located at 3900 Barnett Street in eastern Fort Worth. The building—located in an area known as Broadcast Hill—was the first studio facility in the United States that was designed specifically for television broadcasting; the tower that transmitted its signal (supporting microwave and remote antennas) was also based on the studio grounds. The station originally broadcast for four hours each evening on Wednesday through Saturdays, with test patterns airing during the late morning and late afternoon Monday through Saturdays; the station expanded its programming schedule to all seven days each week within six months, airing a cumulative total of between 35 and 40 hours of programming per week. Originally serving as an affiliate, Channel 5 has carried programming from NBC since its sign-on—having inherited the affiliation through WBAP radio's longtime relationship with the television network's radio predecessor, the NBC Blue Network, with which it had been affiliated since 1927; however, it also maintained a secondary affiliation with ABC by way of a secondary affiliation that WBAP radio had begun maintaining with the ABC Radio Network, the direct successor to NBC Blue, when it and timeshare partner WFAA assumed the 570 AM frequency (taking over the former KGKO) on an alternating basis in April 1947. The following year in 1949, WBAP-TV and WBAP (AM), were joined by a sister station on radio, WBAP-FM (96.3 FM, now KSCS). The WBAP calls reportedly stood for