KSAN (FM)
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KSAN (107.7
MHz The hertz (symbol: Hz) is the unit of frequency in the International System of Units (SI), often described as being equivalent to one event (or cycle) per second. The hertz is an SI derived unit whose formal expression in terms of SI base u ...
, "107.7 The Bone") is a
commercial Commercial may refer to: * (adjective for) commerce, a system of voluntary exchange of products and services ** (adjective for) trade, the trading of something of economic value such as goods, services, information or money * a dose of advertising ...
FM radio FM broadcasting is a method of radio broadcasting that uses frequency modulation (FM) of the radio broadcast carrier wave. Invented in 1933 by American engineer Edwin Armstrong, wide-band FM is used worldwide to transmit high fidelity, high-f ...
station licensed to
San Mateo, California San Mateo ( ) is the most populous city in San Mateo County, California, United States, on the San Francisco Peninsula. It is part of the San Francisco Bay Area metropolitan region, and is located about south of San Francisco. San Mateo border ...
, and serving the
San Francisco Bay Area The San Francisco Bay Area, commonly known as the Bay Area, is a List of regions of California, region of California surrounding and including San Francisco Bay, and anchored by the cities of Oakland, San Francisco, and San Jose, California, S ...
. It is owned and operated by
Cumulus Media Cumulus Media, Inc. is a broadcasting company of the United States and is the second largest owner and operator of AM and FM radio stations in the United States ahead of Audacy and behind iHeartMedia iHeartMedia, Inc., or CC Media Holdi ...
and it airs a
classic rock Classic rock is a radio format that developed from the album-oriented rock (AOR) format in the early 1980s. In the United States, it comprises rock music ranging generally from the mid-1960s through the early-1990s, primarily focusing on comm ...
radio format A radio format or programming format (not to be confused with broadcast programming) describes the overall content broadcast on a radio station. The radio format emerged mainly in the United States in the 1950s, at a time when Radio broadcasting, ...
. It also serves as the FM
flagship station In broadcasting, a flagship (also known as a flagship station or key station) is the broadcast station which originates a television network, or a particular radio or television program that plays a key role in the branding of and consumer loyal ...
for the San Francisco 49ers Radio Network. KSAN's studios and offices are located on Battery Street in San Francisco's SoMa district. KSAN has an
effective radiated power Effective radiated power (ERP), synonymous with equivalent radiated power, is an IEEE standardized definition of directional radio frequency (RF) power, such as that emitted by a radio transmitter. It is the total power in watts that would ha ...
(ERP) of 8,900 watts. Its
transmitter In electronics and telecommunications, a radio transmitter or just transmitter (often abbreviated as XMTR or TX in technical documents) is an electronic device which produces radio waves with an antenna (radio), antenna with the purpose of sig ...
is off Radio Road on
San Bruno Mountain San Bruno Mountain is a fault block, fault-block Horst (geology), horst in northern San Mateo County, California. Rising to a quarter-mile high peak directly out of San Francisco Bay, it also includes a smaller ridge in San Francisco. Viewed f ...
in
Brisbane, California Brisbane (pron. ) is a small city in San Mateo County, California, located on the lower slopes of the San Bruno Mountain. The city is on the northeastern edge of San Mateo County, located immediately south of the San Francisco city limits on t ...
. KSAN broadcasts in the
HD Radio HD Radio (HDR) is a trademark for in-band on-channel (IBOC) digital radio broadcast technology. HD radio generally simulcast, simulcasts an existing analog radio station in digital format with less noise and with additional text information. HD R ...
hybrid format.


History


KUFY/KVEZ

On April 1, 1963, KUFY
signed on A sign-on (or start-up in Commonwealth countries except Canada) is the beginning of operations for a radio broadcasting, radio or television station, generally at the start of each day. It is the opposite of a sign-off (or closedown in Commonw ...
the air. It was the FM counterpart of KOFY (now
KTCT KTCT (1050 AM) is a commercial radio station licensed to San Mateo, California, and serving the San Francisco Bay Area. It is owned by Cumulus Media and airs a sports radio, sports radio format as KNBR 1050, a sister station to KNBR (AM), KNBR ...
), owned by Intercontinental Radio, Inc. While the AM station aired a
regional Mexican Regional Mexican music refers collectively to the regional subgenres of the country music of Mexico and its derivatives from the Southwestern United States. Each subgenre is representative of a certain region and its popularity also varies by ...
format, KUFY played beautiful music, mostly instrumental
cover version In popular music, a cover version, cover song, remake, revival, or simply cover is a new performance or recording by a musician other than the original performer or composer of the song. Originally, it referred to a version of a song release ...
s of popular songs along with
Hollywood Hollywood usually refers to: * Hollywood, Los Angeles, a neighborhood in California * Hollywood, a metonym for the cinema of the United States Hollywood may also refer to: Places United States * Hollywood District (disambiguation) * Hollywood ...
and
Broadway Broadway may refer to: Theatre * Broadway Theatre (disambiguation) * Broadway theatre, theatrical productions in professional theatres near Broadway, Manhattan, New York City, U.S. ** Broadway (Manhattan), the street ** Broadway Theatre (53rd Stre ...
showtunes. Because KUFY played
easy listening Easy listening (including mood music) is a popular music genre and radio format that was most popular during the 1950s to the 1970s. It is related to middle of the road (MOR) music and encompasses instrumental recordings of standards, hit s ...
music, the
call sign In broadcasting and radio communications, a call sign (also known as a call name or call letters—and historically as a call signal—or abbreviated as a call) is a unique identifier for a transmitter station. A call sign can be formally as ...
changed to KVEZ in 1968.


KSOL

In 1975, the station flipped to an
urban contemporary Urban contemporary music, also known as urban music, urban pop, or just simply urban, is a music radio format. The term was coined by New York radio DJ Frankie Crocker in the early to mid-1970s as a synonym for Black music. Urban contemporary r ...
format and took the call letters KSOL for "K-Soul". The original K-Soul broadcast on
1450 AM The following radio broadcasting, radio stations broadcast on AM broadcasting, AM frequency 1450 kHz: 1450 AM is a Regional and Local broadcast frequency. Argentina * LRJ211 in San Juan. * LRI203 El Sol in Buenos Aires. Bermuda *VSB Canada ...
(now
KEST KEST (1450 AM) is a brokered-time radio station in San Francisco, California. Most of the station's programming is in Asian languages, including Mandarin and Cantonese. It also airs some South Asian, Greek, and German programs as well as New ...
). KSOL became the first urban radio station on the FM dial in the San Francisco Bay Area. Local musician
Sly Stone Sylvester Stewart (March 15, 1943 – June 9, 2025), better known by his stage name Sly Stone, was an American musician, songwriter and record producer. He was the frontman of Sly and the Family Stone, playing a critical role in the development ...
played a part in influencing the station to make the switch. While KSOL managed to fend off competition from KBLX unscathed throughout the 1980s, KSOL's ratings began to decline due to competition from
KMEL KMEL (106.1 FM) is an urban contemporary radio station that is licensed to San Francisco, California, serving the San Francisco Bay Area. It is owned and operated by iHeartMedia. KMEL has studios located in the SoMa district, and broadcasts ...
, then a
Top 40 In the music industry, the Top 40 is a list of the 40 currently most popular songs in a particular genre. It is the best-selling or most frequently broadcast popular music. Record charts have traditionally consisted of a total of 40 songs. "To ...
station which was slowly evolving in a
rhythmic contemporary Rhythmic contemporary, also known as Rhythmic Top 20, Rhythmic Top 30, Rhythmic Top 40, Rhythmic CHR or rhythmic crossover, is a primarily American music-radio format that includes a mix of EDM, upbeat rhythmic pop, hip-hop and upbeat R&B hit ...
format before going in a mainstream urban direction. Eventually, the decision was made to end KSOL and its format. The DJs were notified beforehand and held a goodbye show to send off KSOL on February 10, 1992. The final song on KSOL was "
Miss You Much "Miss You Much" is a song by American singer Janet Jackson. Composed by songwriters and record producers Jimmy Jam and Terry Lewis, it was recorded for the singer's fourth studio album, '' Janet Jackson's Rhythm Nation 1814'' (1989). As with all ...
" by
Janet Jackson Janet Damita Jo Jackson (born May 16, 1966) is an American singer, songwriter, actress and dancer. She is noted for her innovative, socially conscious and sexually provocative records, as well as elaborate stage shows. Her sound and choreogr ...
. Afterwards, KSOL segued into a 72-hour loop of " Wild Thing" by Tone Lōc.


KYLD

On February 13, 1992, 107.7 FM flipped to
rhythmic contemporary Rhythmic contemporary, also known as Rhythmic Top 20, Rhythmic Top 30, Rhythmic Top 40, Rhythmic CHR or rhythmic crossover, is a primarily American music-radio format that includes a mix of EDM, upbeat rhythmic pop, hip-hop and upbeat R&B hit ...
, branded as "WiLD 107". The first song on "WiLD" was " D.M.S.R" by
Prince A prince is a male ruler (ranked below a king, grand prince, and grand duke) or a male member of a monarch's or former monarch's family. ''Prince'' is also a title of nobility (often highest), often hereditary, in some European states. The ...
. For the first year and a half, the station retained the old KSOL call letters. Allen Shaw's Crescent Communications bought the station in December 1993 for $13.5 million. KSOL's call letters were changed to KYLD the following year. The company also purchased 99.1 in San Jose from
Viacom Viacom, an abbreviation of Video and Audio Communications, may refer to: * Viacom (1952–2005), a former American media conglomerate * Viacom (2005–2019), a former company spun off from the original Viacom * Viacom18, a joint venture between Pa ...
, and began
simulcast Simulcast (a portmanteau of "simultaneous broadcast") is the broadcasting of programs or events across more than one resolution, bitrate or medium, or more than one service on the same medium, at exactly the same time (that is, simultaneously) ...
ing KYLD's programming in the South Bay, to expand coverage. Program Director Rick Thomas and Music Director Michael Martin set a plan in motion to overtake KMEL; they came up with a strategy of playing "old school" and up tempo freestyle/dance songs like those heard on heritage San Jose radio station HOT 97.7. KMEL moved from rhythmic to
urban contemporary Urban contemporary music, also known as urban music, urban pop, or just simply urban, is a music radio format. The term was coined by New York radio DJ Frankie Crocker in the early to mid-1970s as a synonym for Black music. Urban contemporary r ...
at the same time, and the two stations battled with each other throughout the mid-1990s.


KSAN

At 12:01 a.m. on July 2, 1997, KYLD moved to 94.9 FM. 107.7 and 94.9 would simulcast until Midnight on July 7, when 107.7 FM, now with the KSAN call letters, began stunting with construction noises and song clips as a prelude to a flip to
classic rock Classic rock is a radio format that developed from the album-oriented rock (AOR) format in the early 1980s. In the United States, it comprises rock music ranging generally from the mid-1960s through the early-1990s, primarily focusing on comm ...
at noon on July 11. On March 13, 2000, after playing "
Goodbye Yellow Brick Road ''Goodbye Yellow Brick Road'' is the seventh studio album by English singer, pianist, and composer Elton John. A double album, it was released on 5 October 1973, by DJM Records. Recorded at the Château d'Hérouville in France, the album became ...
" by
Elton John Sir Elton Hercules John (born Reginald Kenneth Dwight; 25 March 1947) is a British singer, songwriter and pianist. His music and showmanship have had a significant, lasting impact on the music industry, and his songwriting partnership with l ...
, followed by a stunt with funeral bells, the station relaunched as "The Bone", playing classic rock with a harder edge. To initiate this change, the station played
AC/DC AC/DC are an Australian rock band formed in Sydney in 1973. Their music has been variously described as hard rock, blues rock and Heavy metal music, heavy metal, although the band calls it simply "rock and roll". They are cited as a formativ ...
"A to Z", all 154 songs the band had recorded at that point, aired in alphabetical order.


Classic to mainstream rock

With the demise of rival rock station KSJO in 2004, the station adopted a
mainstream rock Mainstream rock (also known as heritage rock) is a radio format used by many commercial radio stations in the United States and Canada. Format background Mainstream rock stations represent a cross between classic rock, active rock and alternativ ...
format. The playlist shifted back toward classic rock in April 2017. The weekday on-air staff at The Bone consisted of morning team Lamont & Tonelli, as well as Chasta, Steven Seaweed and Zakk. In early 2016, Steven Seaweed's "All Request Hot Lunch" was cancelled by the program director. In August, Lejf Jaeger left the Bone. He had been part-time weekends for ten years. With his departure, "Local Licks" was also removed from the programming. Steven Seaweed retired on July 1, 2017, after 44 years of deejaying in the Bay Area, the last 20 of which had been with KSAN. On November 15, 2024, the station parted ways with longtime morning hosts Lamont & Tonelli. This was related to layoffs at Cumulus Media.


Sports

Throughout the
NFL The National Football League (NFL) is a professional American football league in the United States. Composed of 32 teams, it is divided equally between the American Football Conference (AFC) and the National Football Conference (NFC). The N ...
season, the station broadcasts
San Francisco 49ers The San Francisco 49ers (also written as the San Francisco Forty-Niners and nicknamed the Niners) are a professional American football team based in the San Francisco Bay Area. The 49ers compete in the National Football League (NFL) as a member ...
games. While co-owned KNBR and
KTCT KTCT (1050 AM) is a commercial radio station licensed to San Mateo, California, and serving the San Francisco Bay Area. It is owned by Cumulus Media and airs a sports radio, sports radio format as KNBR 1050, a sister station to KNBR (AM), KNBR ...
are the primary
flagship station In broadcasting, a flagship (also known as a flagship station or key station) is the broadcast station which originates a television network, or a particular radio or television program that plays a key role in the branding of and consumer loyal ...
s for the team, KSAN also airs the games.


Booster

KSAN is rebroadcast on the following FM booster:


HD Radio

KSAN broadcasts in the
HD Radio HD Radio (HDR) is a trademark for in-band on-channel (IBOC) digital radio broadcast technology. HD radio generally simulcast, simulcasts an existing analog radio station in digital format with less noise and with additional text information. HD R ...
format. From 2016 to 2018, the HD2 channel carried the Nash FM country music network."Nash FM No Longer On KSJO/San Francisco"
from All Access (March 1, 2016)


References


External links


Official WebsiteJive 95 - A tribute to KSAN
*
Details about KSFR with 1968 audio recording of transition from classical to rockKSAN Website in 1998 after change to 107.7107.7 the Bone Website in 2003
{{Authority control SAN Mainstream rock radio stations in the United States Radio stations established in 1963 1963 establishments in California Cumulus Media radio stations