KSOS is a non-commercial radio station located in Las Vegas, Nevada, broadcasting on 90.5 FM. KSOS airs a christian contemporary music format.
KSOS was a radio station broadcasting on 800 kHz, and was licensed to Brigham City, Utah. During the 1980s, it was owned by Brent Larson, who had the transmitter and tower moved from 948 W Forest Street in Brigham City, where the station had operated since the late 1940s, to Plain City in 1985. It carried oldies programming for much of its life, switching to classic rock in 1995. In 2002, the station was sold to Simmons Media, and began simulcasting KZNS 1280, which was also being simulcasted on 960 in Utah County, on KOVO.
When Bonneville International began operating KUTR on 820 AM in 2005, Simmons Media, who had sold KUTR to Bonneville, pulled the station off air completely. Simmons also operated expanded band station KXOL, and a condition imposed by the FCC required that one of the two licenses had to be surrendered. The station never returned to air. KSOS was famous for its weekly Hispanic-oriented "El Ranch Rio Grande show" hosted by a local and veteran broadcaster George Gonzales. When the station was pulled off air, the show was canceled.