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  2. Digital subchannel - Wikipedia

    en.wikipedia.org/wiki/Digital_subchannel

    Televisa and TV Azteca use subchannels in rural areas in order to ensure national network service. As a result, since 2016, many areas that formerly had only one Azteca or Televisa network now have both from the same transmitter. Additionally, TV Azteca has two national services that are broadcast as subchannels in most areas, a+ and adn40.

  3. Second audio program - Wikipedia

    en.wikipedia.org/wiki/Second_audio_program

    This one-way audio channel allows individuals at the television station to send messages to people located away from the station, and is frequently employed during on-location newscasts as the foldback channel to reporters and cameramen. This channel is located at 6.5 times the pilot (102.271 kHz), and is also part of the MTS standard.

  4. 7.1 surround sound - Wikipedia

    en.wikipedia.org/wiki/7.1_surround_sound

    However, whereas a 5.1 surround sound system combines both surround and rear channel effects into two channels (commonly configured in home theatre set-ups as two rear surround speakers), a 7.1 surround system splits the surround and rear channel information into four distinct channels, in which sound effects are directed to left and right ...

  5. Ultra-high-definition television - Wikipedia

    en.wikipedia.org/wiki/Ultra-high-definition...

    The channel "France TV Sport Ultra HD" was available via the Fransat platform for viewers in France. [ 170 ] In May 2015, satellite operator SES announced that Europe's first free-to-air Ultra HD channel (from Germany's pearl.tv shopping channel) would launch in September 2015, broadcast in native Ultra HD via the Astra 19.2°E satellite position.

  6. Australia - Wikipedia

    en.wikipedia.org/wiki/Australia

    Australia has two public broadcasters (the Australian Broadcasting Corporation and the multicultural Special Broadcasting Service), three commercial television networks, several pay-TV services, [475] and numerous public, non-profit television and radio stations.