KOOL-FM began programming oldies music in 1971, the first radio station ever to carry the format, as a format brought to the station by Jerry Osborne, who used the air name Dan Coffey. KOOL-FM's studios are located in downtown Phoenix, and its transmitter is in South Mountain Park. The station primarily competes with Riviera-owned 95.1 KOAI, which concentrates on the 1960s, 1970s and 1980s hits. The station is branded as Big 94.5 and features mostly hits of the 1970s, 1980s, and 1990s, and is one of the top-performing stations in Phoenix. KOOL-FM (94.5 MHz) is a commercial classic hits radio station in Phoenix, Arizona.
