KISF

KISF (103.5 FM, "Zona MX 103.5") is a commercial radio station located in Las Vegas, Nevada. KISF airs a regional Mexican music format, and is the Las Vegas affiliate for El Bueno, La Mala, Y El Feo in the morning. Its studios are in Spring Valley and its transmitter is on Black Mountain in Henderson.
History.
KISF signed on as KLTN with an adult contemporary format as "Lite 103.5" in February 1989. In January 1991, the station rebranded as "Magic 103.5" under new call letters KMMK. On May 22, 1992, the station changed call letters to KEDG, and adopted a modern rock music format, branded as "The Edge". The station debuted at #1 in the Las Vegas ratings and was influential in other stations nationwide flipping to the format. In 1996, KEDG gained a direct competitor as KFBI adopted a harder edged modern rock music format under the call letters KXTE. On June 5, 1998, at Noon, KEDG flipped to urban oldies under the call letters KISF, and branded as "Kiss-FM". In March 1999, Heftel Broadcasting Corporation (which eventually became Univision Radio) acquired the frequency, and flipped 103.5 to Regional Mexican as "La Nueva 103.5", becoming the first Spanish FM radio station serving the Las Vegas Hispanic community. On March 24, 2016, KISF rebranded as "Zona MX 103.5".