XHIMT-TDT

XHIMT-TDT is a television station serving Mexico City and the flagship transmitter of Azteca 7, one of the principal broadcast networks operated by TV Azteca. The station began broadcasting on May 15, 1985, during the period when Mexico's state broadcasting organization Imevisión reorganized the former Televisión de la República Mexicana system into a national television network. XHIMT was created as the Mexico City outlet of Red Nacional 7, or National Network 7, while the existing Canal 13 network was developed around Red Nacional 13. The two services were given distinct audience strategies: Network 7 was oriented more toward working-class and rural viewers, whereas Network 13 was associated with programming for middle- and upper-income audiences. The creation of a new channel 7 service in Mexico City required a substantial frequency reorganization. Transmitters in Mexico City, Toluca, and the Altzomoni area were moved to make room for the final available VHF television assignment in the capital. XHIMT therefore formed part of a wider national infrastructure rather than operating solely as an urban local station. At its launch, the wider Red Nacional 7 system incorporated the former TRM transmitter network, including 99 repeater stations that reached approximately 72 percent of Mexico's population. From 1990 to 1993, Imevisión increasingly consolidated the programming of its channel 7 and channel 13 services. This arrangement ended when both networks were privatized and TV Azteca was established. XHIMT subsequently became the principal Mexico City station associated with the Azteca 7 brand, combining its role as a terrestrial transmission facility with the network's flagship identity. The station also participated in Mexico's transition from analog to digital television. TV Azteca tested high-definition programming on the service beginning in 2007, initially using programming that differed from the analog channel, including films, documentaries, selected series, news, and some Azteca HD productions such as soccer broadcasts. Regulatory requirements for digital companion services later required digital broadcasts to carry the same programming as their analog counterparts. XHIMT began transmitting a direct Azteca 7 HD feed in 2010, although some 4:3 programming was displayed stretched into a 16:9 frame. Analog broadcasting on channel 7 ended at midnight on December 17, 2015, as part of Mexico's federally mandated analog switch-off. The station continued in digital terrestrial television, using multiplexed subchannels. On March 20, 2017, the Azteca Noticias service previously carried on one of the station's digital subchannels was replaced by A+, a local-oriented service; Azteca Noticias moved to XHTVM-TDT channel 40.2. XHIMT-TDT remains identified with Azteca 7 and serves as the network's Mexico City transmission base, although detailed current programming, ownership, executive, and technical multiplex information is not established in the supplied references.

XHIMT came to air on May 15, 1985, when Imevisión was converting the former Televisión de la República Mexicana structure into a more fully developed national television system. The station served as the Mexico City anchor of Red Nacional 7, a network intended to operate alongside the existing channel 13 service. Network 7 was positioned toward working-class and rural audiences, while Network 13 was oriented toward a more middle- and upper-class audience. The launch required a frequency rearrangement in central Mexico. Assignments in Mexico City, Toluca, and Altzomoni were changed so that channel 7 could occupy the last VHF television position in the capital. The new service inherited the broader TRM transmission structure, which included 99 repeater stations and reached roughly 72 percent of the national population. XHIMT was consequently both a local Mexico City broadcaster and the principal transmitter for a network with national ambitions. Between 1990 and 1993, Imevisión brought the programming of its channel 7 and channel 13 networks closer together. The arrangement ended with the privatization of both services and the formation of Televisión Azteca. XHIMT then became the principal Mexico City station associated with the Azteca 7 network. Digital broadcasting developed in stages. TV Azteca began testing an HD service in 2007, initially showing films, documentaries, selected series, news, and some high-definition productions such as soccer matches. The early HD schedule did not always match the analog service, but digital-transition rules required digital companion channels to carry the same programming as their analog counterparts. In 2010, XHIMT began transmitting a direct Azteca 7 HD feed. Some older 4:3 programs were displayed stretched to fit a 16:9 frame. The analog channel 7 service shut down at midnight on December 17, 2015, in accordance with Mexico's national analog switch-off. XHIMT continued as a digital terrestrial station with multiplexed subchannels. On March 20, 2017, the Azteca Noticias service on one of its digital services was replaced by A+, a local service, while Azteca Noticias moved to XHTVM-TDT 40.2. The station's current role remains tied to the Azteca 7 network, although the supplied reference material does not provide a complete current technical schedule or a list of station executives.

• 2017

  Digital subchannel service changes

  [1]XHIMT-TDTen.wikipedia.org

  A+ replaces Azteca Noticias on one XHIMT digital subchannel, while Azteca Noticias relocates to XHTVM-TDT 40.2.

• 2015

  Analog transmission ends

  [1]XHIMT-TDTen.wikipedia.org

  Analog broadcasts cease on December 17 as part of Mexico's federally mandated digital transition.

• 2010

  Direct Azteca 7 HD feed starts

  [1]XHIMT-TDTen.wikipedia.org

  XHIMT begins transmitting a direct HD feed of Azteca 7.

• 2007

  HD testing begins

  [1]XHIMT-TDTen.wikipedia.org

  TV Azteca starts testing high-definition programming, including films, documentaries, series, news, and selected sports and network productions.

• 1993

  Privatization leads to TV Azteca formation

  [1]XHIMT-TDTen.wikipedia.org

  The channel 7 and channel 13 services are privatized, and the resulting commercial network structure becomes TV Azteca.

• 1990

  Network programming consolidation begins

  [1]XHIMT-TDTen.wikipedia.org

  Imevisión begins consolidating programming between its channel 7 and channel 13 networks, a process that continues until privatization.

• 1985

  XHIMT begins broadcasting

  [1]XHIMT-TDTen.wikipedia.org

  XHIMT launches on May 15 as the Mexico City station of Imevisión's Red Nacional 7, using infrastructure inherited from the TRM network.

Flagship Mexico City broadcast station for TV Azteca's Azteca 7 network, historically associated with broad national reach and programming aimed in particular at working-class and rural audiences.

• Broadcast television network · 1985

  Azteca 7

  The principal television service associated with XHIMT-TDT. Azteca 7 developed from Imevisión's Red Nacional 7 and became part of TV Azteca after the privatization of Mexico's state television networks. XHIMT is the service's flagship Mexico City transmitter and namesake station.

• Digital television service · 2010

  Azteca 7 HD

  The high-definition version of the Azteca 7 service. TV Azteca tested HD programming from 2007, and XHIMT began transmitting a direct Azteca 7 HD feed in 2010. The service formed part of the station's migration from analog broadcasting to digital terrestrial television.

• 2017

  Replacement of Azteca Noticias with A+ on a digital subchannelStrategy

  Background

  TV Azteca adjusted the services carried on its digital multiplexes after the analog shutdown.

  Action taken

  A+ replaced Azteca Noticias on one XHIMT digital service, while Azteca Noticias moved to XHTVM-TDT 40.2.

  Aftermath

  XHIMT's digital offering included a local-oriented A+ service alongside the principal Azteca 7 feed.

  Source

• 2010

  Adoption of a direct Azteca 7 HD feedGeneration change

  Background

  TV Azteca had tested high-definition programming since 2007 while Mexico was progressing toward digital terrestrial television.

  Action taken

  XHIMT began transmitting a direct high-definition feed of Azteca 7.

  Aftermath

  The station continued its transition toward digital broadcasting, culminating in the end of analog transmission in 2015.

  Source

• 1985

  Launch of a separate national channel 7 networkStrategy

  Background

  Imevisión was reorganizing the TRM broadcasting structure and sought to create a national network that complemented, rather than simply duplicated, its existing channel 13 service.

  Action taken

  XHIMT was launched as the Mexico City flagship of Red Nacional 7, with the network positioned toward working-class and rural viewers.

  Aftermath

  The station became the central Mexico City outlet for the channel 7 network and later formed part of the TV Azteca system after privatization.

  Source

• 2017

  A+ replaces Azteca Noticias on an XHIMT digital subchannel[1]XHIMT-TDTen.wikipedia.org

  Product launch

  On March 20, the local A+ service replaced Azteca Noticias on one of XHIMT's digital multiplex services; Azteca Noticias moved to XHTVM-TDT 40.2.

• 2015

  Mexico City analog channel 7 transmission ends[1]XHIMT-TDTen.wikipedia.org

  Regulation

  XHIMT's analog broadcasts ended at midnight on December 17 as part of Mexico's federally mandated transition to digital terrestrial television.

• 2010

  XHIMT begins carrying a direct Azteca 7 HD feed[1]XHIMT-TDTen.wikipedia.org

  Product generation

  The station began transmitting a direct high-definition version of the Azteca 7 service after an earlier period of HD testing with partially different programming.

• 1985

  XHIMT launches as the Mexico City outlet of Red Nacional 7[1]XHIMT-TDTen.wikipedia.org

  Other

  XHIMT began broadcasting on May 15 as part of Imevisión's national channel 7 network, which used the former TRM transmitter infrastructure and was designed to complement the channel 13 network.

1. 1XHIMT-TDTen.wikipedia.org