KKSF (910 kHz) is a
commercial AM radio station
Radio broadcasting is the broadcasting of audio (sound), sometimes with related metadata, by radio waves to radio receivers belonging to a public audience. In terrestrial radio broadcasting the radio waves are broadcast by a land-based rad ...
licensed to
Oakland, California
Oakland is a city in the East Bay region of the San Francisco Bay Area in the U.S. state of California. It is the county seat and most populous city in Alameda County, California, Alameda County, with a population of 440,646 in 2020. A major We ...
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 ...
. The station is owned by
iHeartMedia
iHeartMedia, Inc., or CC Media Holdings, Inc., is an American mass media corporation headquartered in San Antonio, Texas. It is the holding company of iHeartCommunications, Inc., formerly Clear Channel Communications, Inc., a company founded by ...
and has an
all-news radio
All-news radio is a radio format devoted entirely to the discussion and broadcast of news.
All-news radio is available in both local and radio syndication, syndicated forms, and is carried on both major US satellite radio networks. All-news sta ...
format, with programming from the co-owned
Black Information Network (BIN). The
studios are located on Townsend Street in
San Francisco
San Francisco, officially the City and County of San Francisco, is a commercial, Financial District, San Francisco, financial, and Culture of San Francisco, cultural center of Northern California. With a population of 827,526 residents as of ...
's
SoMa district.
The station's
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 ...
and two-
tower array are located on
Point Isabel in
Richmond, on the
San Francisco Bay
San Francisco Bay (Chochenyo language, Chochenyo: 'ommu) is a large tidal estuary in the United States, U.S. state of California, and gives its name to the San Francisco Bay Area. It is dominated by the cities of San Francisco, California, San ...
.
KDIA utilizes one of KKSF's two towers during the day. KKSF transmits with 20,000
watt
The watt (symbol: W) is the unit of Power (physics), power or radiant flux in the International System of Units (SI), equal to 1 joule per second or 1 kg⋅m2⋅s−3. It is used to quantification (science), quantify the rate of Work ...
s during the day and 5,000 watts at night, using a
directional antenna
A directional antenna or beam antenna is an antenna that radiates or receives greater radio wave power in specific directions. Directional antennas can radiate radio waves in beams, when greater concentration of radiation in a certain directio ...
at all times. Because radio waves travel farther at night, KKSF must reduce its power after sunset to protect other stations on
AM 910 from interference.
History
KLX
KKSF was founded by the ''
Oakland Tribune'' newspaper. Starting in early 1922, the Tribune supplied content for Preston D. Allen's station,
KZM, located on top of the
Oakland Hotel. Following a suggestion by Allen, the newspaper decided to establish its own broadcasting station, and on May 3, 1922, it was issued a license for a new station with the randomly assigned
call letters
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 Identifier, unique identifier for a transmitter station. A call sign can be fo ...
KLX. This authorization specified operation on the standard "entertainment" wavelength of 360 meters (833
kilocycles). KLX's first
sign-on
A sign-on (or start-up in Commonwealth countries except Canada) is the beginning of operations for a radio or television station, generally at the start of each day. It is the opposite of a sign-off (or closedown in Commonwealth countries exce ...
occurred at 7:30 p.m. on July 25, 1922.
For the first year and a half, KLX shared the studios and transmitter at the Oakland Hotel with KZM. Engineer Roswell Smith remembered that "they used to shut down the transmitter as KZM, and take to the air a half hour later as KLX".
["The History of KLX and KZM Oakland, California"](_blank)
by John Schneider, 1996 (theradiohistorian.org) As part of the cooperative effort, the ''Herald'' arranged to upgrade the KLX's 5-watt transmitter by installing two more powerful transmitters, which were named for characters in the
Toonerville Folks comic strip
A comic strip is a Comics, sequence of cartoons, arranged in interrelated panels to display brief humor or form a narrative, often Serial (literature), serialized, with text in Speech balloon, balloons and Glossary of comics terminology#Captio ...
: 50-watt "Little Jimmie", and 250-watt "Powerful Katrinka."
Initially, the 360-meter wavelength was the only "entertainment" frequency available, so stations within various regions had to develop time sharing agreements providing for each station to broadcast for a few hours each week. By November 1, 1922, there were twelve "San Francisco Bay District" stations sharing time on 360 meters, and, after KZM ceded its original hours, KLX was assigned 7:00–7:30 p.m. daily except Sunday, plus 10:00–11:00 a.m. Sunday and 8:00–9:00 p.m. Tuesday.
In the fall of 1923, KLX moved to its own studio on the 20th floor of the recently completed
Tribune Tower at Thirteenth and Franklin, where it would stay there for thirty years. An antenna was strung between the tops of the Tribune and Oakland Bank buildings, and the transmitter was upgraded to 500 watts.
The station later moved to 590 kHz. The transmitter power was increased to 1,000 watts by the 1930s, with the station moving to 880 kHz. With the implementation of the
North American Regional Broadcasting Agreement (NARBA) in 1941, KLX moved to its current frequency of 910 kHz. In 1952, the transmitter was moved to the San Francisco Bay shoreline and increased to 5,000 watts. In late 1956, KLX moved to the Bermuda Building on Franklin Street.
KLX was owned for three decades by
Joseph R. Knowland, owner and publisher of ''
The Oakland Tribune'' newspaper. To pay off campaign debts related to U.S. Senator
William Knowland's unsuccessful 1958 campaign for
Governor of California
The governor of California is the head of government of the U.S. state of California. The Governor (United States), governor is the commander-in-chief of the California National Guard and the California State Guard.
Established in the Constit ...
, the Knowland family sold the station to the former publisher of ''
Collier's
}
''Collier's'' was an American general interest magazine founded in 1888 by Peter F. Collier, Peter Fenelon Collier. It was launched as ''Collier's Once a Week'', then renamed in 1895 as ''Collier's Weekly: An Illustrated Journal'', shortened i ...
'' magazine (which had ceased publication in December 1956).
Top 40 KEWB
KLX became KEWB on June 7, 1959. KEWB was owned by Crowell Collier Broadcasting until 1966. KEWB switched to
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 ...
hits, pitting it against existing San Francisco Top 40 stations
KYA and
KOBY. KYA outlasted KEWB, while KOBY couldn't keep up and eventually changed call letters to KKHI, as "The HIGH Spot on Your Radio Dial", playing
middle of the road music. It later switched to
classical music
Classical music generally refers to the art music of the Western world, considered to be #Relationship to other music traditions, distinct from Western folk music or popular music traditions. It is sometimes distinguished as Western classical mu ...
.
Guided by programmer Chuck Blore, KEWB began the same on-air approach implemented at
Los Angeles
Los Angeles, often referred to by its initials L.A., is the List of municipalities in California, most populous city in the U.S. state of California, and the commercial, Financial District, Los Angeles, financial, and Culture of Los Angeles, ...
sister station KFWB, and adopted the slogan "Color Radio - Channel 91". KEWB played the current best-selling hits, added amusing format elements, and employed energetic, funny
disc jockey
A disc jockey, more commonly abbreviated as DJ, is a person who plays recorded music for an audience. Types of DJs include Radio personality, radio DJs (who host programs on music radio stations), club DJs (who work at nightclubs or music fes ...
s. Chris Borden's weekend show was a "pool party," complete with sound effects:
Casey Kasem dropped in wild tracks,
Gary Owens delivered a stream of one-liners, Bobby Dale was frantic, and Ron Lyons was acerbic. It proved to be a winning combination.
During the early 1960s, KEWB was famous for its on-air slogan "Boss Radio", using the then-current slang for "cool". The station was considered the launching pad for the radio careers of Casey Kasem, "The Real"
Don Steele, and
Robert W. Morgan. Gary Owens did a humorous morning show at KEWB, which he eventually moved it to KFWB, and in the 1960s was featured as the "announcer" on TV's ''
Rowan & Martin's Laugh-In
''Rowan & Martin's Laugh-In'' (often simply referred to as ''Laugh-In'') is an American sketch comedy television program that ran for six seasons from January 22, 1968, to July 23, 1973, on the NBC television network. The show, hosted by comed ...
''.
Casey Kasem did the evening show using the moniker "Casey at the Mike," after the famous
baseball
Baseball is a bat-and-ball games, bat-and-ball sport played between two team sport, teams of nine players each, taking turns batting (baseball), batting and Fielding (baseball), fielding. The game occurs over the course of several Pitch ...
poem "
Casey at the Bat". He had been using wild tracks between records, but the General Manager told him to stop. Without that gimmick, he looked around the station for inspiration. Finding the 1962 edition of 'Who's Who in Popular Music' in a waste basket, he conceived of relating music trivia to the audience between the songs, which led eight years later to the development of the successful "
American Top 40
''American Top 40'' (abbreviated to ''AT40'') is an internationally radio syndication, syndicated, independent song countdown radio programming, radio program created by Casey Kasem, Don Bustany, Tom Rounds, and Ron Jacobs (broadcaster), Ron Jaco ...
" show format upon which he built his later career. A decade later, KNEW was the show's
Bay Area network affiliate
In the broadcasting industry (particularly in North America, and even more in the United States), a network affiliate or affiliated station is a local broadcaster, owned by a company other than the owner of the network, which carries some or a ...
, so Casey was again heard on "Channel 91".
Morgan went by his last name while working the morning
drive time at KEWB. Steele worked the afternoon drive. Both had short stays, both joining
Bill Drake's new "Boss Radio" at
KHJ, Los Angeles. Drake's conversion of San Francisco's
KFRC to the same format brought an end to KEWB's Top 40 era.
Other notable KEWB personalities included Don McKinnon, Buck Herring, "Honest" John Trotter, Art Nelson, Bobby Dale, Perry Roberts, Chris Borden, Jim Wayne,
Michael Jackson
Michael Joseph Jackson (August 29, 1958 – June 25, 2009) was an American singer, songwriter, dancer, and philanthropist. Dubbed the "King of Pop", he is regarded as Cultural impact of Michael Jackson, one of the most culturally significan ...
, and Ken Knox. KEWB DJs Ron Lyons and Ron Reynolds returned during the KNEW years.
Talk KNEW
In 1966, the station was purchased by
Metromedia Broadcasting, which changed the station's
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 ...
to KNEW, purchased from a
Spokane station for $75,000. Metromedia wanted to match its New York station's call letters
WNEW. Starting with an all-night talk show hosted by Joe Dolan, Metromedia ended the Top 40 music format and switched to controversy-focused
talk radio
Talk radio is a radio format containing discussion about topical issues and consisting entirely or almost entirely of original spoken word content rather than outside music. They may feature monologues, dialogues between the hosts, Interview (jo ...
, based in elaborate new waterfront studios at 66
Jack London Square in the
Port of Oakland Building. The studio featured extensive space for tours of some of Metromedia owner
John Kluge's art collection (also displayed at
KTTV in Los Angeles).
However, KNEW found it couldn't compete against
ABC Radio's long-established news-talk station
KGO. In 1969, Metromedia switched to playing
adult standards, with personality DJs. The station continued to struggle, as they were now competing against market powerhouse
KSFO.
Oldies Channel 91
In 1971, general manager Ken Gaines was transferred to KNEW from Metromedia's
Cleveland
Cleveland is a city in the U.S. state of Ohio and the county seat of Cuyahoga County. Located along the southern shore of Lake Erie, it is situated across the Canada–U.S. maritime border and approximately west of the Ohio-Pennsylvania st ...
station
WHK. Gaines and new program director John L. Hawkins quickly evolved KNEW to a fast-paced format of
adult contemporary
Adult contemporary music (AC) is a form of radio-played popular music, ranging from 1960s vocal and 1970s soft rock music to predominantly ballad-heavy music of the 1980s to the present day, with varying degrees of easy listening, pop, soul ...
and
oldies
Oldies is a term for musical genres such as pop music, rock and roll, doo-wop, surf music from the second half of the 20th century, specifically from around the mid-1950s to the 1980s, as well as for a radio format playing this music.
Since 2 ...
music hosted by humorous DJs. Hawkins restored the nickname "Channel 91" and on-air elements echoing its earlier days as Top 40 rocker KEWB. KNEW recorded new station
jingles using the original KEWB melody.
The KNEW staff featured several KEWB veterans including Ron Lyons and Ron Reynolds, board operator Carl "The Caterpillar" Dahlstrom (a nickname given him by Gary Owens), and Casey Kasem's former board operator Jim Tharp. Newcomers to the air team included Bill Collins from WHK, and "Tall" Tom Campbell from
KYA and
KLOK. Program director John Hawkins did shows on weekends. Other KNEW air personalities during this period include Hal Pickens, Bob Raleigh, Harry Stephens (Osibin), and Eddie Alexander.
In 1972, KNEW general manager Ken Gaines and program director John Hawkins devised a "relationships" talk show that candidly focused on issues important to, and only accepted calls from, women. Hawkins named the show "California Girls" and created a special edit of the Beach Boys song as the theme. They launched the idea as a variation on a Sunday morning public affairs show already hosted by Don Chamberlain, a part-time/weekend KNEW newscaster. Word spread rapidly that KNEW had "sex talk" on the radio, and the show was soon moved to weekdays 9AM - Noon where it became a popular and talked about feature. ''
San Francisco Chronicle
The ''San Francisco Chronicle'' is a newspaper serving primarily the San Francisco Bay Area of Northern California. It was founded in 1865 as ''The Daily Dramatic Chronicle'' by teenage brothers Charles de Young and M. H. de Young, Michael H. ...
'' columnist Herb Caen wrote that he walked the entire length of Market Street listening to California Girls, and he didn't miss a word -— yet he didn't have a radio. The station was on in all the stores. Later, KNEW added evening show "California Guys" just for men, hosted by Dee Merritt. Hawkins extended the branding to the "greatest hits" music format, calling it "California Gold".
During the years 1966-1977, KNEW was considered one of the Bay Area's top news stations, known for its aggressive field reporting. Led by News Director Gil Haar (Eugene Gelhaar), the veteran news team included Knowles Robertson, Ron Baker, Barney Lee (continuing from the KEWB days) and Mike Forrest.
Country music
Though "Channel 91" was quite popular, the early 1970s recession and oil crisis made it difficult to get sufficient advertising to support the large operation. Eventually, Metromedia decided it could make more money by adopting a simpler, less-competitive
country music
Country (also called country and western) is a popular music, music genre originating in the southern regions of the United States, both the American South and American southwest, the Southwest. First produced in the 1920s, country music is p ...
format that was working for sister station
KLAC in
Los Angeles
Los Angeles, often referred to by its initials L.A., is the List of municipalities in California, most populous city in the U.S. state of California, and the commercial, Financial District, Los Angeles, financial, and Culture of Los Angeles, ...
.
In July 1974, KNEW's format changed to "California Country" music, led by new general manager Bill Ward, who was also GM of KLAC. Gaines, Hawkins, Lyons, Reynolds, Campbell, and others left the station. Bill Collins remained with KNEW as a country music DJ, working the mid-day shift. Other airstaff members included morning man Frank Terry and music director Steve Leader in the afternoon slot.
In the 1990s, the format became classic country. In September 1997, the station changed from local DJs to the satellite-fed "
Real Country"
syndicated network. In August 1998, the station dropped country to
simulcast co-owned
KIOI, an
adult contemporary
Adult contemporary music (AC) is a form of radio-played popular music, ranging from 1960s vocal and 1970s soft rock music to predominantly ballad-heavy music of the 1980s to the present day, with varying degrees of easy listening, pop, soul ...
station.
Return to talk

KNEW became the flagship over-the-air affiliate of ''
CNET Radio'' on January 14, 2000, offering technology news and talk 24 hours a day. Under that format, the station simulcasted nationally on
XM Satellite Radio channel 130. Also in 2000, the station was acquired by Clear Channel Communications, the forerunner to current owner
iHeartMedia
iHeartMedia, Inc., or CC Media Holdings, Inc., is an American mass media corporation headquartered in San Antonio, Texas. It is the holding company of iHeartCommunications, Inc., formerly Clear Channel Communications, Inc., a company founded by ...
.
In 2003, the station dropped CNET and became a general
talk radio
Talk radio is a radio format containing discussion about topical issues and consisting entirely or almost entirely of original spoken word content rather than outside music. They may feature monologues, dialogues between the hosts, Interview (jo ...
station branded "Talk 910." Programming included
Sacramento
Sacramento ( or ; ; ) is the capital city of the U.S. state of California and the seat of Sacramento County. Located at the confluence of the Sacramento and American Rivers in Northern California's Sacramento Valley, Sacramento's 2020 p ...
-based ''
Armstrong & Getty'' in mornings, ''
The Glenn Beck Program'', and nationally syndicated ''
The Savage Nation with
Michael Savage'', for which KNEW was the
flagship station beginning in July 2003.
On September 10, 2009, KNEW dropped "The Savage Nation" and replaced it with
John and Ken from co-owned Los Angeles station
KFI. The station explained its decision: "We have decided to go in a different philosophical and ideological direction, featuring more contemporary content and more local information."
Clear Channel rebranded KNEW to "Fox Newsradio 910" on July 6, 2010, with the slogan "The Bay Area's Home of
Fox News Radio." Accompanying that change, Fox News Radio's
John Gibson replaced John and Ken in afternoon drive. Later in 2010, 910 began carrying "
The Dave Ramsey Show" and "
The Alan Colmes Show".
KKSF NewsTalk 910

As part of a far-reaching programming realignment, KNEW obtained the rights to "
The Rush Limbaugh Show," previously on KSFO. KNEW was rebranded as KKSF "NewsTalk 910," effective January 3, 2012. The KKSF call sign was last used at
103.7 on the FM dial, best known as a
Smooth Jazz station on that frequency. The Sacramento-based
Armstrong & Getty program remained in the morning commute period, while
Len Tillem and
Gil Gross replaced John Gibson in the afternoon.
Gene Burns' "Dining Around" program got a spot on Saturday.
Bill Wattenburg's syndicated show got a spot on Sunday nights. Tillem, Gross, Burns, and Wattenburg became available when
KGO terminated many talk show hosts as part of a shift to a news and information format. KKSF also picked up the syndicated
Tom Sullivan show during middays. Tillem and Burns were the only local hosts on the station. Len Tillem left the station at the end of March 2013, and Gene Burns died at the end of May 2013. Rush Limbaugh's daily syndicated program moved from KKSF to AM 960 (which was now using the KNEW call letters), and later returned to KSFO.
ESPN Deportes

On July 22 2016, KKSF dropped its talk format and switched to Spanish-language sports using the
ESPN Deportes Radio Network. Initially, the station was programmed by Deportes Media under a
local marketing agreement (LMA). (Deportes Media had previously operated previous ESPN Deportes Radio affiliate 860
KTRB.) By November 2016, iHeartMedia resumed operating KKSF in-house, retaining ESPN Deportes programming for several more months.
Progressive talk

On June 11, 2018, KKSF switched to
progressive talk, branded as "Real Talk 910." The progressive talk format had previously been heard on KNEW (960 AM) until that station switched to business news as an affiliate of
Bloomberg Radio.
KKSF's progressive talk programming on weekdays included
Stephanie Miller,
Thom Hartmann,
Randi Rhodes, Rick Unger, and
Clark Howard. Rev.
Jesse Jackson also hosted a weekend show. For world and national news, the station picked up
NBC News Radio, which is run by parent company iHeartMedia.
Black Information Network
On June 29, 2020, fifteen iHeart stations in markets with large African American populations, including KKSF, began
stunting with African American speeches, interspersed with messages such as "Our Voices Will Be Heard" and "Our side of the story is about to be told," with a new format slated to launch on June 30.
That day, KKSF, along with the other fourteen stations, became the launch stations for the
Black Information Network, an African American-oriented
all-news network. This change positioned the station in competition with
Entercom (now
Audacy)’s heritage all-news stations
KCBS/
KFRC-FM.
See also
*
List of initial AM-band station grants in the United States
List of initial AM-band station grants in the United States reviews the first standard radio broadcasting stations that were authorized in the United States.
This review begins with the introduction of the broadcasting service in the United S ...
References
External links
*
FCC History cards for KKSF(covering KLX / KNEW from 1927-1981)
"The History of KZM, KLX and KEWB Oakland, Californiaby John Schneider, 1996
{{All-News Radio
Mass media in Richmond, California
Radio stations established in 1922
KSF
1922 establishments in California
IHeartMedia radio stations
Black Information Network stations
All-news radio stations in the United States