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For broadcast stations that previously used the KNBC call sign, see KNBC (disambiguation).
Not to be confused with KMBC-TV.
KNBC 4 logo.png
Los Angeles, California
United States
Branding NBC4 Southern California (general)
NBC4 News (newscasts)
Channels Digital: 36 (UHF)
Virtual: 4 (PSIP)
Subchannels 4.1 NBC
4.2 Cozi TV
Translators (see article)
Affiliations NBC (O&O)
Owner NBCUniversal
(NBC Telemundo License LLC)
First air date January 16, 1949 (1949-01-16)
Call letters' meaning K National Broadcasting Company
Sister station(s) KNSD
Comcast SportsNet Bay Area
Comcast SportsNet California
Former callsigns KNBH (1949–1954)
KRCA (1954–1962)
Former channel number(s) Analog:
4 (VHF, 1949–2009)
Transmitter power 380 kW
Height 991 m (3,251 ft)
Facility ID 47906
Transmitter coordinates 34°13′32″N 118°3′52″W / 34.22556°N 118.06444°W / 34.22556; -118.06444
Licensing authority FCC
Public license information: Profile

KNBC, virtual channel 4 (UHF digital channel 36), is an NBC owned-and-operated television station located in Los Angeles, California, United States. KNBC is owned by the NBC Owned Television Stations group, and operates as part of a television duopoly with Corona-licensed KVEA (channel 52), an O&O of the Spanish-language Telemundo network; both networks are owned by NBCUniversal, a subsidiary of Comcast. KNBC's studios and offices are located in the Universal Studios Hollywood backlot, and its transmitter is located on Mount Wilson.

In the few areas of the western United States where an NBC station is not receivable over-the-air, KNBC-TV is available on satellite television through DirecTV.


NBC Studios in Burbank, California, 1978.

Channel 4 first went on the air as KNBH (standing for "NBC Hollywood") on January 16, 1949.[1] It was the penultimate VHF station in Los Angeles to debut, and the last of NBC's five original owned-and-operated stations to sign on. Unlike the other four, KNBH was the only NBC-owned television station that did not benefit from having a sister radio station. The NBC Radio Network had long been affiliated with KFI in Los Angeles, though that relationship did not extend into television in August 1948 when KFI-TV (channel 9, now KCAL-TV) signed on the air.[2] When KNBH signed on, it marked the debut of NBC programs on the West Coast.

The station changed its callsign to KRCA (for NBC's then-parent company, the Radio Corporation of America) on October 18, 1954.[3] The call letters were changed again on November 11, 1962, when NBC moved the KNBC identity from its San Francisco radio station (which became KNBR) and applied it to channel 4 in Los Angeles.[4][5]

Channel 4 originally broadcast from the NBC Radio City Studios on Sunset Boulevard and Vine Street in Hollywood. In November 1962, after more than 13 years broadcasting from Hollywood, the station relocated to the network's color broadcast studio facility in suburban Burbank. NBC Color City, as it was then known, had been in operation since March 1955, and was at least four to five times larger than Radio City, and could easily accommodate KNBC's locally-produced studio programming. NBC Radio's West Coast operations eventually followed channel 4 to Burbank not too long after.

On October 11, 2007, NBCUniversal announced that it would put its Burbank studios up for sale and construct a new, all-digital facility near the Universal Studios backlot in Universal City, in an effort to merge all of NBCUniversal's West Coast operations into one area. As a result, KNBC, KVEA and NBC News' Los Angeles bureau moved to a new digital facility on the Universal lot formerly occupied by Technicolor SA. The studio opened on February 1, 2014.[6]

In fall 2007 with digital broadcast roll out, the station began broadcasting a 24/7 newschannel News Raw on a subchannel.[7] On January 16, 2009, KNBC celebrated its 60th anniversary with an hour-long tribute to the station, featuring past and present anchors, hosts, other popular on-air staff, and major news stories. KNBC and its other NBC owned-and-operated stations introduced a new layout for their websites in July 2009.

Digital television[edit]

Digital channels[edit]

The station's digital signal is multiplexed:

Channel Video Aspect PSIP Short Name Programming[8]
4.1 1080i 16:9 NBC-4LA Main KNBC programming / NBC
4.2 480i COZI-TV Cozi TV

KNBC also maintains a Mobile DTV feed of subchannel 4.1, labelled "KNBC-4.1", broadcasting at 1.83 Mbit/s.[9][10]

On January 1, 2012, Universal Sports transitioned into a cable- and satellite-exclusive service, causing its affiliates (such as KNBC) to replace the network and remove the channel from their digital signals entirely, with KNBC deleting digital subchannel 4.4 (which also carried NBC Weather Plus from its November 15, 2004 launch to November 30, 2008) as result of the loss of Universal Sports.

NBC California Nonstop[edit]

See also: Cozi TV
Logo for NBC California Nonstop.

KNBC operated NBC California Nonstop, a collaboration between KNBC and two other NBC-owned stations in California (KNSD in San Diego and KNTV in San Jose) which launched on May 3, 2011 and replaced programming from NBC Plus on the second digital subchannels of all three stations. In the case of KNBC, it was the second news-oriented digital channel operated by the station, as digital channel 4.2 featured a rolling news format under the name NewsRaw (which moved from digital channel 4.4 upon Weather Plus' December 1, 2008 shutdown), prior to the launch of California Nonstop.[11] Each station produced a local newscast at 7 p.m. that was tailored to their respective market. For the Los Angeles feed of the channel, Colleen Williams anchored the hour-long Nonstop News LA.[citation needed] NBC California Nonstop ended on December 20, 2012 when Cozi TV was launched.

Analog-to-digital conversion[edit]

KNBC shut down its analog signal, over VHF channel 4, on June 12, 2009, as part of the federally mandated transition from analog to digital television.[12] The station's digital signal remained on its pre-transition UHF channel 36,[13] using PSIP to display KNBC's virtual channel as 4 on digital television receivers. Since the station qualified for the nightlight clause in the DTV Delay Act,[14] it was required to keep its analog signal on for two weeks from June 12 to 26, 2009 to inform viewers of the digital television transition, consisting of a loop of digital transition public service announcements, while the digital channel was used for normal programming.


Current studio building shared by KNBC and KVEA

KNBC has been long active in community events, including airing the annual Kingdom Day Parade (honoring Dr. Martin Luther King, Jr.'s birthday) in South Los Angeles (until 2009, when coverage moved to KABC-TV), sponsoring an annual two-day Health & Fitness Expo Fair at the Los Angeles Convention Center every summer, and between 2001 and 2009 has been the exclusive local English-language carrier of the annual Los Angeles Marathon (KTLA has aired the marathon since 2010). The station also produces Whipnotic, a half-hour show about Southern California's car culture, that also airs in Spanish on Telemundo sister station KVEA.

Syndicated programming[edit]

Syndicated programming seen on KNBC includes Steve Harvey, The Ellen DeGeneres Show, Extra, and The Meredith Vieira Show. KNBC co-produces Access Hollywood and its daytime talk show spinoff Access Hollywood Live, both of which also air on KNBC and other NBC owned-and-operated stations.[15] As of August 2010, KNBC is one of three NBC-owned stations that distributes programming either nationally and/or regionally (along with KNTV and WNBC).

News operation[edit]

KNBC newscast title card.

KNBC became the fifth station in the Los Angeles market to begin broadcasting its local newscasts in high definition on July 14, 2008 (Spanish-language sister station KVEA and former sister KWHY-TV also converted their newscasts to HD at the same time). On December 6, 2011, KNBC entered into a partnership with public radio station KPCC as part of a larger effort by NBCUniversal to partner with non-profit news organizations following its acquisition by Comcast.[16]

News Team[edit]

Current on-air staff[edit]


Weather Team

Sports Team

  • Fred Roggin – Sports Anchor, host of 'The Challenge' and Going Roggin; also Olympics correspondent for NBC


Television.svg This film, television or video-related list is incomplete; you can help by expanding it with reliably sourced additions.

Notable former on-air staff[edit]

Television.svg This film, television or video-related list is incomplete; you can help by expanding it with reliably sourced additions.


KNBC is rebroadcast on the following translator stations:


  1. ^ "KNBH (TV); new NBC outlet is sixth TV station in L.A." Broadcasting - Telecasting, January 17, 1949, pg. 34. [1]
  2. ^ "L.A.'s 'Mt. Millions'." Broadcasting - Telecasting, December 27, 1948, pg. 76. [2]
  3. ^ "RCA replaces NBC in O&O calls." Broadcasting - Telecasting, October 4, 1954, pg. 78. [3]
  4. ^ "KNBC to L.A." Broadcasting, November 12, 1962, pg. 72
  5. ^ "KRCA is now KNBC" ad in Los Angeles Times, November 12, 1962.
  6. ^ "NBCU Reveals New West Coast HQ Plans After Scuttling Earlier Project". Reuters. January 5, 2012. 
  7. ^ Allison Romano. (3/9/2008) Local Stations Multiply. Broadcasting & Cable.
  8. ^ RabbitEars TV Query for KNBC
  9. ^ Mobile DTV Service List. RabbitEars.Info. Retrieved on 2012-06-04.
  10. ^ Mobile DTV Station Guide. Retrieved on 2012-06-04.
  11. ^ "Station Ownership in the Top 25 Markets" (PDF). January 24, 2009. p. 3. Retrieved 28 July 2012. 
  12. ^ List of Digital Full-Power Stations
  13. ^ CDBS Print. Retrieved on 2012-06-04.
  14. ^ "UPDATED List of Participants in the Analog Nightlight Program" (PDF). Federal Communications Commission. June 12, 2009. Retrieved June 4, 2012. 
  15. ^ NBC Daytime's Assult. Retrieved on 2012-06-04.
  16. ^ "Quick Takes: NBC, nonprofits to team". Los Angeles Times. December 6, 2011. Retrieved Decenver 10, 2011.  Check date values in: |accessdate= (help)
  17. ^ "Bio". Retrieved 5 July 2012. 
  18. ^ Margulies, Lee (29 April 2003). "Jess Marlow to retire and leave L.A.". Los Angeles Times. Retrieved 12 March 2013. 
  19. ^ "Kevin O'Connell Basic Information". Retrieved 5 July 2012. 

External links[edit]