XHCPDE-TDT

XHCPDE-TDT is a Mexican public television station serving Tijuana, Baja California, from a transmitter located at Cerro Colorado. It carries the national Canal Once network, which is owned and operated by the Instituto Politécnico Nacional (IPN), Mexico's public polytechnic institution. The station is therefore best understood as a local transmission outlet within a public broadcasting network rather than as an independently programmed commercial television brand. The station's technical history is closely connected to the difficult cross-border frequency environment around Tijuana and San Diego. The channel 3 allocation was not initially assigned because a high-powered Mexican signal could have created short-spacing and interference problems for KEYT-TV in Santa Barbara, California. During the 1990s, regulatory conditions made lower-power Mexican use of the frequency possible. Mexico notified the United States in 1995 of its intention to construct a channel 3 facility, proposing an effective radiated power of 100 kilowatts. International coordination subsequently required a lower power level and a directional antenna pattern designed to limit interference across the border. The IPN launched the station's analog service under the call sign XHTJB-TV on August 2, 1999. It was the fourth repeater built directly by the IPN as part of the expansion of the then-Once TV network, following facilities in Cuernavaca, San Luis Potosí, and Valle de Bravo. The station initially increased its effective radiated power progressively, ultimately reaching 40 kilowatts. Its launch generated practical interference concerns in the San Diego area, particularly for households and businesses whose video recorders and other equipment used channel 3. Cox Communications and other San Diego broadcasters supported an unsuccessful effort to move the Mexican station to a different channel, but no alternative frequency was identified that could adequately cover Tijuana. XHTJB later transitioned to digital broadcasting in the late 2000s. Its digital signal initially used RF channel 46 and virtual channel 3. On July 18, 2013, Tijuana completed Mexico's first digital television conversion, placing the station within the region's digital broadcasting environment. In a nationwide realignment of Mexican virtual channels on October 27, 2016, the Canal Once outlet adopted virtual channel 11, aligning it with the network's national identity. The change was technically feasible because the station's signal pattern did not overlap with Los Angeles stations in the same way as many other Tijuana transmitters, notably KTTV, which also uses virtual channel 11. The reassignment released virtual channel 3 for Imagen Televisión's Tijuana service. In late 2017, the station received approval to move its digital transmission from RF channel 46 to RF channel 15 as part of Mexico's spectrum-repacking process. A subsequent concession re-award changed the call sign from XHTJB to XHCPDE, effective January 1, 2022. The same concession process resulted in call-sign changes at five other Canal Once transmitters. XHCPDE-TDT continues to function as a Canal Once repeater for Tijuana and the surrounding market.

XHCPDE-TDT is a Canal Once public television transmitter in Tijuana, Baja California. Its facilities are located at Cerro Colorado, within the Tijuana metropolitan area, and its service forms part of the Instituto Politécnico Nacional's network of repeaters. The station distributes Canal Once programming rather than operating as a separately branded commercial broadcaster. The station emerged from a technically and diplomatically sensitive frequency assignment. Channel 3 had originally not been awarded to either Tijuana or San Diego because a high-powered signal in the region could have been short-spaced over water to KEYT-TV in Santa Barbara. By the 1990s, lower-power Mexican operations on the frequency could be considered. Mexico informed the United States in 1995 that it intended to construct a channel 3 station with a proposed 100-kilowatt effective radiated power. Coordination with U.S. authorities led to a reduced power level and a directional antenna pattern intended to protect neighboring American services. The IPN signed on the station on August 2, 1999, using the call sign XHTJB-TV. It was the fourth repeater constructed directly by the IPN during the expansion of Once TV, after stations in Cuernavaca, San Luis Potosí, and Valle de Bravo. The transmitter raised its power over several days and eventually operated at 40 kilowatts of effective radiated power. The launch caused complaints and practical interference problems in San Diego, especially for users whose video cassette recorders and other devices were configured to output on channel 3. Cox Communications and other San Diego broadcasters campaigned unsuccessfully for the station to be assigned another frequency. No replacement channel was found that would provide equivalent coverage of Tijuana. XHTJB converted to digital transmission in the late 2000s. Its digital operation initially used RF channel 46 while retaining virtual channel 3, its former analog identity. Tijuana completed Mexico's first digital television conversion on July 18, 2013. On October 27, 2016, Mexico implemented a broad virtual-channel realignment, and Canal Once transmitters adopted virtual channel 11 nationwide. The Tijuana station could use that virtual channel because its transmission pattern did not overlap with Los Angeles services in the same manner as most Tijuana stations, particularly KTTV, which also uses virtual channel 11. The change left virtual channel 3 available for Imagen Televisión's Tijuana transmitter. In late 2017, the station received approval to change its digital RF assignment to channel 15 as part of spectrum repacking. The station's legal identity changed after a concession re-award. Because the renewal filing had been submitted impermissibly late, the concession was re-awarded and the call sign became XHCPDE, effective January 1, 2022. Five other Canal Once transmitters underwent call-sign changes in the same process. XHCPDE-TDT remains an active Canal Once public television outlet serving Tijuana.

• 2022

  Call sign became XHCPDE

  [1]XHCPDE-TDTen.wikipedia.org

  The former XHTJB station adopted the XHCPDE call sign effective January 1, 2022, following a concession re-award.

• 2017

  Approved for RF channel 15

  [1]XHCPDE-TDTen.wikipedia.org

  The station received approval to move its digital RF assignment from channel 46 to channel 15 during spectrum repacking.

• 2016

  Virtual channel changed to 11

  [1]XHCPDE-TDTen.wikipedia.org

  The station adopted virtual channel 11 as part of Mexico's nationwide virtual-channel realignment, aligning it with Canal Once.

• 2013

  Tijuana digital television conversion

  [1]XHCPDE-TDTen.wikipedia.org

  Tijuana completed Mexico's first digital television conversion on July 18, 2013. The station's digital service initially used RF channel 46 and virtual channel 3.

• 1999

  Analog service launched as XHTJB-TV

  [1]XHCPDE-TDTen.wikipedia.org

  The IPN launched its Tijuana Canal Once repeater on August 2, 1999, initially on analog channel 3.

• 1995

  Mexico notified the United States of a proposed channel 3 facility

  [1]XHCPDE-TDTen.wikipedia.org

  Mexico proposed constructing a Tijuana channel 3 station with 100 kilowatts of effective radiated power. International coordination later required lower power and a protective antenna pattern.

A local public-service transmission outlet extending Instituto Politécnico Nacional and Canal Once programming to the Tijuana television market.

• Public television broadcasting · 1999

  Canal Once Tijuana

  The station's principal offering is the over-the-air relay of Canal Once, the public television network owned and operated by the Instituto Politécnico Nacional. XHCPDE-TDT extends the network's national programming to viewers in Tijuana and nearby parts of Baja California through digital terrestrial transmission.

• 1999San Diego channel-change campaign

  San Diego · Tijuana

  Cox Communications and other San Diego broadcasters supported an effort to have the new Tijuana channel 3 operation moved to another frequency because of cross-border interference concerns.

  Outcome. The campaign was unsuccessful because no alternative frequency was identified that could adequately cover Tijuana.

  Source

• 2022

  Concession re-award and call-sign changeOther

  Background

  The station's concession was re-awarded after an impermissibly late renewal filing.

  Action taken

  The call sign changed from XHTJB to XHCPDE, effective January 1, 2022.

  Aftermath

  The Tijuana Canal Once transmitter continued operating under its new call sign, alongside call-sign changes at five other Canal Once transmitters.

  Source

• 2017

  Digital RF reassignment to channel 15Other

  Background

  Mexico's spectrum-repacking process required changes to some digital television frequency assignments.

  Action taken

  The station was approved to move from RF channel 46 to RF channel 15.

  Aftermath

  The reassignment supported the national repacking plan; detailed implementation information is not specified in the reference material.

  Source

• 2016

  Adoption of Canal Once virtual channel 11Strategy

  Background

  Mexico undertook a nationwide realignment of virtual television channels, and Canal Once transmitters were standardized on virtual channel 11.

  Action taken

  The Tijuana station moved from virtual channel 3 to virtual channel 11.

  Aftermath

  The station aligned its viewer-facing channel identity with Canal Once nationally, while virtual channel 3 became available for Imagen Televisión's Tijuana service.

  Source

1. 1XHCPDE-TDTen.wikipedia.org