Listen to the "STAR 101.3" radio station live. The "STAR 101.3" studio is located in San Francisco, CA. Callsign: KIOI. Broadcasting region: San Francisco/Oakland/San Jose, California. Start of broadcasting: October 27, 1957 as KPEN. Program format: hot adult contemporary-formatted radio station. Musical style: conservative sound oriented primarily towards adult women, urban AC focuses on R&B and soul music that appeal to African American adults, and rhythmic AC focuses on dance music and other rhythmic genres. Target audience: appeals towards the 18–54 age group. Audience Reach: 2,327,851.