In the mid-1960s, the station was operated by Marvin Kosofsky. Kosofsky hired Bob Smith (a.k.a. Wolfman Jack), who relocated from Del Rio, Texas, to run the station with a mostly R&B format. Also at KUXL at this time were Art Hoehn (a.k.a. Fat Daddy Washington) and former KDWB personality Ralph Hull (a.k.a. Preacher Paul Anthony and The Nazz). It was this trio of broadcasters who took control of "border blaster" station XERB 1090, in Baja California, in 1965. They operated the "Big X" from Minneapolis initially, then relocated to Southern California in 1966.