Star 101.3 (KIOI) has been part of San Francisco's sonic landscape since it first signed on as KPEN on October 27, 1957. That's nearly seventy years of broadcasting from the Bay Area, longer than most of its format competitors have existed at all. Today, owned by iHeartMedia and positioned as a Hot Adult Contemporary station, it programs the music of the 90s, 2000s, and today for an audience that grew up with these songs and still wants to hear them properly, with a signal that reaches 125,000 watts from its transmitter at 354 meters above the Bay Area terrain.
A Superpower Station With Seven Decades Behind It
The KIOI call sign is a quiet joke at radio engineers' expense: the frequency is "around 101" on an analog tuner. But there's nothing understated about the station's technical footprint. Star 101.3 operates at an effective radiated power of 125,000 watts, which is so unusually high that it's been grandfathered into its FCC license as a special case. The signal covers the entire San Francisco Bay Area and beyond. When you tune in from anywhere in the greater Bay, it comes in clean.
The station's studios sit in San Francisco's SoMa district, the neighborhood that has gone from industrial warehouses to tech companies to music venues across the decades the station has been on air. Star 101.3 is one of iHeartMedia's flagship Bay Area properties alongside KISQ (98.1), KKSF (103.7), and others, making it part of one of the most competitive radio clusters in the United States.
Hot AC: The Format That Outlasted Everything Else
Hot Adult Contemporary is a format that's genuinely difficult to get right. It has to feel current enough for people in their 30s and 40s who still care about music, while being warm and familiar enough that it doesn't alienate the audience that discovered these songs the first time around. Star 101.3's approach, described as "More variety from the 90s, 2000s and today", threads that needle by leaning into catalogue depth without becoming a nostalgia station:
- 90s pop and rock, the era that made this audience, from the big-tent anthems to the deeper cuts that shaped what pop could be before streaming atomized everything.
- 2000s hits, the decade that Star 101.3 grew with, when the format was at its commercial peak and radio still drove discovery.
- Current music, maintaining relevance for listeners who haven't stopped caring about what's new, just added some perspective.
The Bay Area Deserves a Station Like This
San Francisco has one of the most musically sophisticated listener bases in the United States. It's a city that has produced and adopted more genres, subcultures, and music movements than almost anywhere else, from the Summer of Love to early hip-hop to the tech era's taste-making influence. Star 101.3 doesn't try to represent all of that. What it offers instead is a well-produced, high-fidelity stream of the music that defined mainstream pop and rock for the generation now running the city. That's an honest and useful thing to be. The station is reachable at 1013.iheart.com.
Stream Star 101.3 Free on Radio Shuffle
Tune in to Star 101.3 on Radio Shuffle , no account, no app, no fee. Hit play and get seven decades of Bay Area broadcasting distilled into the music of the 90s, 2000s, and today, at 125,000 watts of signal clarity.