|San Francisco-Oakland-San Jose, California|
|City of license||Concord, California|
|Slogan||¡Somos tu canal!
(We're your station!)
|Channels||Digital: 14 (UHF)|
|Owner||Titan TV Broadcast Group
(sale to NRJ TV pending; to remain operated by Titan TV Broadcast Group thereafter)
(TTBG/KTNC License Sub, LLC)
|First air date||June 19, 1983|
|Call letters' meaning||Television
|Former callsigns||KFCB (1983-1996)|
|Former channel number(s)||Analog: 42 (UHF, 1983-2009)
|Former affiliations||independent (1983-2001)
Azteca America (2001-2007)
|Transmitter power||40 kW|
As an independent station 
The station began broadcasting in 1983 as KFCB, a Christian-broadcasting station owned by First Century Broadcasting (later, Family Christian Broadcasting) — the initials in the company name formed the station's original call letters. At that time, its president was Rev. Ronn Haus. A majority of its air time was devoted to Christian programming, including its own in-house productions. The flagship program was called California Tonight, later retitled Coast to Coast, a Christian talk show with sermons, conversations with religious topics, and musical guests. The program utilized an applause cart (audio tape cartridge) to give the viewers the impression of a studio audience. Other programming included The 700 Club, Dr. Robert Schuller's Hour of Power, and various other local and national religious programs, usually of an evangelical nature.
In its earliest years, KFCB supplemented the religious programs with secular shows such as 42 Remembers, Speed Racer, Dennis The Menace, Donna Reed, Father Knows Best, Mighty Hercules, Candid Camera, New Zoo Revue, Danger Mouse, CNN Headline News, and others for about 5 hours per day. Although the station aired secular programming and commercials, KFCB's primary revenue source was always viewer donations; commercial revenue was not significant. Commercials that aired were primarily "direct response" spots. The station broadcast semi-annual telethons, in the manner of public television and radio. Christian children's programming included The Gospel Bill Show, Superbook, Davey and Goliath, and others. From 1985 to 1986, the station phased out most of its secular shows, although a lineup of Saturday morning secular shows remained until at least 1989. The secular shows were occasionally modified to meet the station's "Christian" standards—master control operators were instructed to cover up the "Hollywood Minute" feature of CNN Headline News, and beer commercials were deleted from It's Your Business, a syndicated discussion program. During the fall of 1989, KFCB aired a schedule of Western Athletic Conference college football games.
KFCB's studios were originally located at 5101 Port Chicago Highway, in the industrial section of north Concord, just north of the interchange with State Route 4. Later, space was leased in a neighboring office building for additional offices and a larger studio. Only the cameras (three RCA TK-761's) were moved to the new studio, with the control room remaining in the original building. The new studio boasted an unusual feature--a restroom in the middle of the studio floor, the result of the studio being located in a roughed-in, but unfinished, office structure. The restroom was placed off-limits during tapings as a result of not being soundproof. The RCA transmitter was located on the north peak of Mount Diablo, in a very difficult to access building which was barely large enough to house the transmitter itself—the result of challenges from environmentalists against the station's original application for a construction permit. An engineer working on the front panel of the transmitter was actually standing outside the building itself. The North Peak transmitter site was to be decommissioned at the end of analog transmission in June, 2009. The digital transmitter site is on Mt. Diablo's main peak.
KFCB maintained a full-time production staff and generated much of its own programming, primarily short ministry programs with local ministers. A Sunday-afternoon public-affairs program, Open Forum, covered secular community issues and was the result of an agreement between First Century Broadcasting and a competing applicant for the channel 42 license. The program was later replaced by a similar show, The Informed Viewer.
Around 1988, a translator station, K34AV, was built in Fresno, California to rebroadcast KFCB's signal. The translator became low-power station KSDI-LP in 1997 (now on channel 33) and is no longer associated with KFCB/KTNC. Efforts around the same time to construct another translator in Modesto, California, and purchase a full-power station on Long Island, New York failed.
In 1990, the license renewal application of KFCB came under fire from minority groups for alleged failures to comply with the equal employment opportunity regulations of the FCC. After an investigation by the FCC, the license was ultimately renewed.
A few years later, Haus and other partners decided to form United Christian Broadcasting, with KFCB as the flagship station, which was intended to bring station's programming to a national audience. The venture would prove to be a financial disaster, and by 1996 Haus was forced to sell the station to Pappas Telecasting, at which time the station adopted the KTNC-TV callsign.
In 1997, Pappas acquired KFWU-TV in Fort Bragg in 1997 from Sainte Limited, at which point KFWU became a satellite of KTNC (though at first, KFWU was considered the main station and KTNC the satellite). That station became KUNO-TV in 2003.
KUNO was sold to Jeff Chang in July 2010. Chang would later drop the KTNC simulcast in favor of Retro Television Network programming, under new call letters (originally KBQR; now KQSL), upon taking over.
As a Spanish-language station 
KTNC was among the earliest affiliates of Azteca America upon its formation in 2001. However, Pappas Telecasting terminated KTNC's affiliation agreement with Azteca America after the end of the June 30, 2007 broadcast day. The next day, KTNC officially became a part of Pappas' independent Spanish language network, TuVision. The Azteca América affiliation for the San Francisco DMA moved to a newly-created digital subchannel of KBWB (now KOFY-TV), while the Azteca América affiliation for the Sacramento DMA moved to a low-power station, KSTV-LP. DirecTV replaced KTNC with the KBWB subchannel in some locations on July 1, 2007.
KTNC affiliated with Estrella TV upon its launch in 2009. On January 18, 2013, NRJ TV announced that it would acquire KTNC-TV from Titan TV Broadcast Group for $13.5 million, as part of a two-station deal that also includes Houston sister station KUBE-TV; Titan TV Broadcast Group will continue to operate the stations upon the sale's consummation. The acquisition of KTNC will create a legal duopoly with MundoFox affiliate KCNS (which was bought by NRJ for $15 million in 2011); Titan Broadcast Management maintains a one-third equity stake in NRJ TV.
Digital television 
The station's digital channel is multiplexed:
|Channel||Video||Aspect||PSIP Short Name||Programming|
|42.1||480i||4:3||KTNC-SF||Estrella TV // Bay Area|
|42.2||KTNC-SA||Estrella TV // Central Valley|
Analog-to-digital conversion 
On June 3, 2009, the Federal Communications Commission announced that KTNC would be one of 35 stations to go dark at the end of full-power analog television operation on June 12, 2009. However, the station was transmitting a digital signal as of June 13, 2009.
- "Application Search Details (3)". CDBS Public Access. Federal Communications Commission. Retrieved November 27, 2009.
- "Memoradum Opinion and Order". Federal Communications Commission. July 23, 1997. Retrieved November 27, 2009.
- "San Francisco television station going to LPTV group owner". Television Business Report. July 12, 2010. Retrieved July 12, 2010.
- "San Francisco's Ch. 8 To Go RetroTV". TVNewsCheck. August 19, 2010. Retrieved August 20, 2010.
- McClellan, Steve (September 22, 2002). "Network in the making". Broadcasting & Cable. Retrieved November 27, 2009.
- "KAZH-TV to lose Azteca America affiliation". Houston Business Journal. April 3, 2009.
- "Pappas Telecasting Announces New Spanish-Language Programming Initiative" (Press release). Pappas Telecasting Companies. June 12, 2007.
- Malone, Michael (June 29, 2007). "Azteca Branches Out". Broadcasting & Cable. Retrieved November 27, 2009.
- "New World Gets Pappas TVs for $260M". TVnewsday. January 16, 2009. Retrieved January 18, 2009.
- Malone, Michael (July 9, 2009). "Angulo Named KTNC GM". Broadcasting & Cable. Retrieved November 27, 2009.
- NRJ Adds 2 Stations To Portfolio For $32.5M, TVNewsCheck, January 18, 2013.
- "Updated: FCC: 35 Stations To Go Dark June 12". MultichannelNews. June 3, 2009. Retrieved June 4, 2009.
- official KTNC website
- ThisTV's website and schedule for KTNC-TV
- Query the FCC's TV station database for KTNC
- BIAfn's Media Web Database -- Information on KTNC-TV