K101
 |
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| City | San Francisco, California |
|---|---|
| Broadcast area | San Francisco/Oakland/San Jose, California |
| Branding | Star 101.3 |
| Slogan |
More Variety From The 90's, 2000's and Today (General) San Francisco's Station For More Music, More Variety (Secondary) |
| Frequency | 101.3 MHz (also on HD Radio) 101.3 HD2 for "80's Hits" |
| First air date | October 27, 1957 (as KPEN) |
| Format | Hot Adult Contemporary |
| ERP | 125,000 watts |
| HAAT | 354 meters |
| Class | B |
| Facility ID | 34930 |
| Callsign meaning | KIOI (K101 moniker) |
| Former callsigns | KLX-FM (1948-1957) KPEN (1957-1968) |
| Owner |
iHeartMedia, Inc. (AMFM Broadcasting Licenses, LLC) |
| Sister stations | KISQ, KKSF, KMEL, KNEW, KOSF, KYLD |
| Webcast | Listen Live |
| Website | star1013fm.com |
KIOI (101.3 FM, Star 101.3) is a radio station licensed to San Francisco, California. The iHeartMedia, Inc.-owned station programs a Hot Adult Contemporary format. The station transmits its signal from San Bruno Mountains, while studios are located in the SoMa district of San Francisco.
The station was founded as KLX-FM by the Oakland Tribune newspaper, and began broadcasting May 3, 1948, on 101.3 MHz, simulcasting sister station KLX-AM's programming 17 of the 18 hours it was on daily.
It was sold in 1957 to James Gabbert, a Stanford University engineering major, fellow student Gary M. Gielow, and realtor John S. Wickett. The three launched the station as KPEN on October 27, 1957. At the time, KPEN was a Peninsula station licensed to Atherton, California, broadcasting at 1500 watts from a transmitter on Kings Mountain in the Santa Cruz Mountains. The station soon put an emphasis on high audio quality, in contrast to other FM stations that did not take advantage of FM broadcasting capabilities.
During the day, KPEN played mostly orchestral pop music, switched to a lighter blend of background "dinner music" in the early evening, then classical music after 8 pm. Eventually Gabbert and Gielow hosted an evening program called Excursions in Sound, which showcased high fidelity recordings and took advantage of the high quality broadcast signal.
Two years after KPEN's successful debut, the transmitter was moved to San Bruno Mountain and power increased to 35,000 watts. Then, on August 14, 1964, power was further increased to 125,000 watts, making it the most powerful signal west of the Mississippi River (it was grandfathered in at that power level by the Federal Communications Commission (FCC), which capped stations in that part of the country at 50,000 watts).
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Wikipedia