In October 1996, following more than six months of stunting, KPTY (still KBZR at the time) officially launched as “The New 103.9, Arizona’s Party Station” with a hip-hop-friendly Rhythmic CHR format. Despite having a very limited signal, the station gained an impressive following in the Phoenix market. By mid-June 1997, it forced heritage full-signaled KKFR (Power …