Premise: KXST is a radio station licensed to North Las Vegas, Nevada, broadcasting to the Las Vegas, Nevada area on 1140 AM. The station is owned by CBS Radio, and broadcasts a sports talk format as part of the CBS Sports Radio network. The station's studios are located in the unincorporated Clark County area of Spring Valley, while its transmitter is near Nellis Air Force Base.
Hypothesis: KXST has always broadcast at 1140 AM.