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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. Digital television - Wikipedia

   en.wikipedia.org/wiki/Digital_television

   Lower Adjacent Channel DTV into Analog TV −16 dB −17.43 dB −5 ~ −11 dB [C] −6 dB Upper Adjacent Channel DTV into Analog TV −12 dB −11.95 dB −1 ~ −10 [C] −5 dB Lower Adjacent Channel Analog TV into DTV −48 dB −47.33 dB −34 ~ −37 dB [C] −35 dB Upper Adjacent Channel Analog TV into DTV −49 dB −48.71 dB

4. Free-to-air - Wikipedia

   en.wikipedia.org/wiki/Free-to-air

   Free-to-air (FTA) services are television (TV) and radio services broadcast in unencrypted form, allowing any person with the appropriate receiving equipment to receive the signal and view or listen to the content without requiring a subscription, other ongoing cost, or one-off fee (e.g., pay-per-view).

5. Internet - Wikipedia

   en.wikipedia.org/wiki/Internet

   YouTube was founded on 15 February 2005 and is now the leading website for free streaming video with more than two billion users. [93] It uses an HTML5 based web player by default to stream and show video files. [94] Registered users may upload an unlimited amount of video and build their own personal profile.

6. 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.

7. 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.

8. 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 ...

9. Cable modem - Wikipedia

   en.wikipedia.org/wiki/Cable_modem

   DOCSIS 2.0 added support for S-CDMA PHY, while DOCSIS 3.0 added IPv6 support and channel bonding to allow a single cable modem to use concurrently more than one upstream channel and more than one downstream channel in parallel. Virtually all cable modems operating in the field today are compliant with one of the DOCSIS versions.