WSMV-TV (channel 4) is a television station in Nashville, Tennessee, United States, affiliated with NBC. It is owned by Gray Television alongside low-power Telemundo affiliate WTNX-LD (channel 15). The two stations share studios on Knob Road in west Nashville, where WSMV-TV's transmitter is also located. History Early years WSMV first signed on the air as WSM-TV on September 30, 1950, at 1:10 p.m. CT. It was Nashville's first television station and the second in Tennessee, behind fellow NBC affiliate WMCT (now sister station WMC-TV, then also on channel 4) in Memphis. As a result of the WSM-TV sign-on, WMCT was forced to switch to channel 5 to avoid co-channel interference. WSM-TV was owned by WSM, Inc., a subsidiary of the locally based National Life and Accident Insurance Company, which also owned WSM radio (650 AM) and the original WSM-FM (103.3; shut down in 1951); the AM station is renowned for broadcasts of the country music show The Grand Ole Opry, which has been heard on the station since 1925. The station took its call letters from its parent's slogan, "We Shield Millions." The television station has been an NBC affiliate from its sign-on, although it also carried some programming from CBS, DuMont, and ABC. Its secondary affiliation with CBS ended in 1953, when WSIX-TV (channel 8, now WKRN-TV on channel 2) signed on as a primary CBS affiliate. WSM-TV shared ABC programming with WSIX-TV for a year until WLAC-TV (channel 5, now WTVF) signed on in 1954 as the market's new primary CBS affiliate, leaving WSIX-TV to take the ABC affiliation. In the late 1950s, the station also shared a short-lived affiliation with the NTA Film Network with WSIX-TV by airing one of its programs, Sheriff of Cochise. During the first few years of operation, AT&T would not run telephone lines for WSM-TV to receive network programming until there was another TV station in town. This problem was solved by the station running a private microwave relay transmission from fellow NBC affiliate and now sister station WAVE-TV in Louisville, Kentucky. Growth into the 1960s and 1970s WSM-TV's studios were originally located at 15th Avenue South and Compton Avenue in south Nashville, near the present Belmont University. In 1957, the station attempted to a build a larger tower in west Nashville, near Charlotte Avenue. During the construction process, the new tower's supporting wires failed. This caused the tower to collapse, which