|City of license||KNBR: San Francisco, California
KTCT: San Mateo, California
|Broadcast area||San Francisco Bay Area|
|Slogan||"The Sports Leader"|
|Frequency||KNBR: 680 (kHz)
KTCT: 1050 (kHz)
(also on HD Radio)
|First air date||KNBR: April 17, 1922
|Power||KNBR: 50,000 watts
KTCT: 50,000 watts (day)
10,000 watts (night)
|Facility ID||KNBR: 35208
K National Broadcasting Radio (a reference to former owner NBC)
KTCT: K TiCkeT
|Affiliations||KNBR: CBS Sports Radio
San Francisco Giants
Golden State Warriors
KTCT: CBS Sports Radio
San Francisco 49ers
|Sister stations||KFOG/KFFG, KGO, KSAN, KSFO|
KNBR Webstream (iHeart)
The main station, KNBR (680 kHz), licensed to San Francisco, broadcasts on a clear channel from transmitting facilities in Belmont, California. KNBR's non-directional 50 kilowatt (or 50,000 watt) signal can be heard throughout much of the western United States and as far west as the Hawaiian Islands at night. Because of its extensive range, it is sometimes called by the nicknames "The 50,000 Watt Flamethrower", "The Blowtorch", and "The Mighty 680". Prior to adopting a sports format, KNBR enjoyed a long history as the flagship of NBC's West Coast radio operations.
A second station also uses the KNBR brand. KTCT (1050 kHz) is licensed to San Mateo, California, with a transmitter located in Hayward, California. KTCT carries a separate sports format known as "The Ticket". The KNBR re-branding took place in 2003.
KNBR history 
KNBR began life on April 17, 1922, as KPO, owned by the Hale Brothers department store and the San Francisco Chronicle newspaper. Originally located in the Hale store at Market and 5th (now site of Marshall's and other stores), its horizontal wire antenna on the roof was so efficient it immediately attracted the attention of audiences all over the Pacific Coast.
In 1927, KPO became an affiliate of the new NBC radio network. Eventually KPO was sold to NBC's parent company, the Radio Corporation of America (RCA), and its operation was consolidated into that of its co-owned KGO at the Hunter-Dulin Building, 111 Sutter Street. From there, NBC operated its West Coast network, feeding dozens of stations and operating a news bureau to serve NBC. As NBC's flagship station on the West Coast, it had a full-time orchestra, five studios, and produced many live shows. During the rise of Hollywood, NBC's radio operation was moved to Los Angeles.
In 1941, just before World War II, NBC constructed Radio City at 420 Taylor Street, considered one of the best radio facilities built during radio's golden age. However, with the network control having been moved to Los Angeles, the San Francisco NBC building was never fully utilized. (Later, the building housed KBHK-TV, and now houses the headquarters of a janitorial service.)
During World War II, KPO's news bureau was the major source for NBC of news about the war in the Pacific, and operated shortwave radio stations (transmitters located in Dixon) serving the world. It was at the KPO (RCA) shortwave facility that the message was received that Japanese emperor Hirohito had surrendered, ending World War II. 
In 1946, to shore up its reputation as an NBC station (and the only radio station NBC ever owned on the West Coast), the callsign was changed from KPO to KNBC. This change lasted until 1962, when the callsign was applied to NBC's television station in Los Angeles and the radio station was renamed KNBR.
In November 1949, former NBC television affiliate KRON-TV went on the air. Only before the TV station's first airdate did NBC fight for the construction permit for the TV station until it lost the bid to the de Young family, then the owners of the San Francisco Chronicle.
In the 1950s when NBC scrapped its comedy, drama, variety shows, and serials, the Los Angeles facility was sold and demolished, and KNBC/KNBR once again became the West Coast NBC network control center and West Coast NBC Radio news operation.
KNBR evolved into a Middle of the road music format mixing in Adult Standards with Soft Rock cuts by the early 1960s. The station continued to be a news intensive format with personalities in the foreground and music in the background. By the mid-1970s, KNBR evolved musically into a straight ahead adult contemporary music formatand continued as such into the 1980s.
In 1989 NBC sold KNBR to Susquehanna Radio Corporation. It was the last radio property held by NBC, which two years earlier made the decision to sell off its radio division following General Electric's 1986 acquisition of RCA. The station soon added some sports talk in evenings, and moved towards took a full-time sports format in 1990 with the lone exception of The Rush Limbaugh Show, which KNBR carried from 1988 until 2000.
"The Ticket 1050" 
KNBR has long been linked with 680 AM. In 2003, several years after KNBR's parent company acquired the 1050 AM signal and converted it into KTCT, "The Ticket 1050", the company opted to re-brand that other station as another version of KNBR.
KNBR 1050 is the local home of NASCAR Sprint Cup Series racing, as well as the Sabercats. Some Warriors games and most of the 49ers preseason games are on 1050 AM, as the Giants have priority on 680 AM.
Sports content 
KNBR has been the radio home of the San Francisco Giants since 1979. Giants broadcasters and former Giants Duane Kuiper and Mike Krukow, affectionately known as "Kruk and Kuip", usually do the commentary on the TV broadcast. San Francisco native and Baseball Hall of Fame broadcaster Jon Miller and the most recent addition, Dave Flemming, do the majority of the radio broadcasts, but the 4 of them interchange fairly frequently. At the end of every game, they all sit together for the "Post-Game Wrap", aired on KNBR and televised on CSN Bay Area.
In 2005, KNBR became the official radio home of the San Francisco 49ers. All games are also heard on sister station KSAN "107.7 The Bone"; some AM broadcasts may be moved to KTCT due to conflicts with Giants games. 49ers games were broadcast by Joe Starkey and Gary Plummer for four seasons until Starkey's retirement following the 2008 season. In the 2009 season, former Giants baseball and world-class tennis announcer Ted Robinson took over for Starkey as the play-by-play announcer.
KNBR is owned by Cumulus Media Partners, LLC, a private partnership of Cumulus Media, Bain Capital, The Blackstone Group, and Thomas H. Lee Partners. It was purchased from Susquehanna-Pfaltzgraff Media in 2005 along with other Susquehanna Radio Corporation stations.
||This article is in a list format that may be better presented using prose. (March 2008)|
- Murph & Mac: The KNBR Morning Show
- The Gary Radnich Show with Larry Krueger (see: Gary Radnich)
- Fitz and Brooks (returned to air after Rick Barry resigned from Rick and Rod)
- Bob Fitzgerald, Rod Brooks (hosts)
- The Damon Bruce Show (KNBR 1050) (see: Damon Bruce)
- Mr. T Show
- Tom Tolbert (host)
- Sports Saloon 680, with Patrick Connor
- SportsPhone 680 with Eric Byrnes
SportsPhone 680 was formerly hosted by Larry Krueger, who was fired after a personal rant against the Giants on the show. During his rant, he criticized the Giants for "brain-dead Caribbean hitters hacking at slop nightly". Krueger was first suspended for 10 days, then, on August 10, 2005, KNBR announced that it had ceased professional relations with Krueger. Damon Bruce took over the show in October 2005 and hosted until February 26, 2010, when he started his own noon–4 pm show on KNBR 1050. FP Santangelo took over as SportsPhone680 host. His show lasted from March 1, 2010 to January 19, 2011, after the Washington Nationals hired him as their color commentator for MASN. Eric Byrnes took over as SportsPhone680 host, and hosted his 1st show on March 23, 2011.
- Fill-in Hosts
Marty Lurie, fills in as a weekday host on occasion at KNBR and is the host of SportsPhone 680 Giants Warm-Up and Wrap-Up shows on KNBR every weekend during the baseball season.
- Untitled (Public Affairs)
During the 1990s, the program typically began and ended with the phrase "This is Gimmy Park Li, Your Host." No program title was given. Interviews for this program often consisted of local individuals in volunteer, charitable, or minor governmental capacities.
Due to its time slot, the program is the quintessential example of the "Sunday morning public affairs ghetto". (Related article: Public affairs) The program has, apparently, never been promoted outside of its timeslot. "Gimmy Park Li" was the station's Public Affairs Director. Her "signature" was her sign off: "This is Gimmy Park Li... Your host. Thank you for spending your time... with us."
Past programs 
||This article is in a list format that may be better presented using prose. (March 2008)|
- "Frank And Mike in the Morning"
- "C.J. Bronson"
- "Carter B. Smith"
- "The Steve Jamison Couch"
- Steve Jamison (host)
- "The Leo Laporte Show"
- "Joel A. Spivak, Speaking"
- "The Peter B. Collins Show"
- "SportsPhone 68"
- "California Weekend"
- "Hollywood Calling"
- Jan Wahl (host)
- "Costas Coast to Coast" (syndicated)
- Bob Costas (host)
- "Instant Replay" (syndicated); later "Pat Summerall's Sports in America"
- Pat Summerall (host)
- "The Rush Limbaugh Show"
- "The Morning Show"
- "The Pete Franklin Show"
- Pete Franklin (host)
- "Rick and Rod"
- Rick Barry, Rod Brooks (hosts)
- "Ferrall On The Bench"
- "Mike Cleary's Food and Travel Enthusiast"
- "The Extreme Scene"
- "The John London Not Just Sports Show"
- The Razor and Mr. T
- KOFY 1050 - Cruisin' On A Sunday - June 21, 1981
- "KNBC to L.A." Broadcasting, November 12, 1962, pg. 72
- RacingOne - Nascar Racing: Auto Racing, Nascar News, Racing News, Nascar Online, Nascar 2008, Nascar Drivers, Nascar, Racing, Dale Earnhardt Jr., Jeff Gordon, Tony Stewart, Ryan Newman, Matt Kenseth, Jimmie Johnson
- "CBS Creates the Largest Major Market Sports Radio Network in the Nation" (Press release). CBS. June 6, 2012. Retrieved January 20, 2013.
- Cumulus Media Inc.
- http://www.susquehannaradio.com/pressroom/SPC%20Master%20Press%20Release%20-%20042005.pdf dead link 2007-11-29
- Official Website
- ESPN Radio
- Official Extreme Scene Sports Radio Website
- Tony Bruno Show
- Official Website Of The Best 30 Minutes In Radio Featuring Gary Radnich & Tony Bruno
- The History of KPO (KNBR)
- Query the FCC's AM station database for KNBR
- Radio-Locator Information on KNBR
- Query Arbitron's AM station database for KNBR
- Query the FCC's AM station database for KTCT
- Radio-Locator Information on KTCT
- Query Arbitron's AM station database for KTCT