KXNT-FM is a commercial radio station located in Henderson, Nevada, broadcasting in the Las Vegas, Nevada area on 100.5 FM. KXNT-FM airs a news/talk format, simulcasting KXNT, during the week, and a sports format on weekends. KXNT-FM started with the call letters of KMZQ. KMZQ went through many changes over its 12 year run. KMZQ was known as Q-100 & Klassy 100. From 1995 to 2005, it has been known as Lite 100.5 FM. The first on-air personality was Ron Kirsh. Ron is still heard on the Las Vegas airwaves on KJUL. In June 2005, Lite 100.5 became Jack FM, with a variety hits format. Shortly thereafter, the call letters were changed to KKJJ. KMZQ-FM's call letters now belong to FM 99.3 in Payson, Arizona. However, KMZQ-AM airs on AM-670 in Las Vegas, which is a simulcast of KMZQ-FM in Payson. CBS Radio has announced that starting August 16, Jack-FM would be replaced with a simulcast of sister station KXNT, and would be known as "100.5 FM Newsradio KXNT".