[6] Its owner was Sleepy Stein, who was able to get permission from the Federal Communications Commission for a power increase by switching the frequency to 97.9 in 1958.

[3] Later that year, the station switched to an all-request middle of the road (MOR) format, with ethnic programming on Sundays.

[19][20] In 1992, under the direction of general manager Alfredo Rodriguez, KSKQ-FM was turned into a Banda music station, KLAX-FM, branded "La Equis".

[23] Before joining KRZZ in 2014, Cortez and Yañez had been part of Eddie "Piolín" Sotelo's syndicated morning show for 12 years.

[23] Renán "El Cucuy" Almendárez Coello, the station's morning show host, helped coordinate a demonstration held on the streets of downtown Los Angeles on March 25, 2006.

Coello received attention in various media following the original protests, including an appearance on Tom Leykis' English-language radio talk show.