Country music station KBBQ (1500 AM) in Burbank became KROQ in September 1972, changing its format to Top-40 and hiring established disc jockeys from other stations.[19] The new KROQ called itself the “ROQ of Los Angeles”. In 1973, with National Science Network’s estate selling off its assets, KROQ’s owners bought KPPC-AM-FM (immediately divesting the AM station to meet then-current ownership limits), changed the calls to KROQ-FM and hired Shadoe Stevens to create a new rock format described as high-energy “all-cutting-edge-rock-all-the-time” and began simulcasting as “The ROQs of L.A.: Mother Rock!” Meanwhile, KPPC on 1240 AM was sold to Universal Broadcasting, a religious broadcaster, and remained on the air with its limited-schedule of Wednesday evening and Sunday operation until subsequent owners took the station off the air permanently in 1996.