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  1. #1
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    Default ATSC vs NTSC vs QAM Tuner

    The following definitions will hopefully clear up the any questions you may have about ATSC, NTSC, and QAM.

    NTSC (National Television System Committee) - Old analog broadcast format orginally developed in 1941 and modified in 1953 for color. TVs that receive TV signals over-the-air built with NTSC tuners will require a digital-to-analog converter box to continue viewing television signals after the digital transition. Read more about High Definition programming. Read more about .

    QAM (Quadrature Amplitude Modulation) Tuner - For use with subscribed television services to a cable company. TVs or set top boxes with a built-in QAM tuner are capable of receiving high definition cable programming of local channels without a cable set top box. Read more about .



    Please use this thread to discuss any questions, comments, or anything related to the ATSC format, NTSC format, or QAM Tuners. Please post if you would like to add any additional information that I may have missed.

  2. #2

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    A clarification regarding ATSC. ATSC is actually the name of the committee, as you pointed out. The format is actually 8VSB, and you'll see it referred to as such in some of the geekier forums on the Internet.

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    Quote Originally Posted by bicker View Post
    A clarification regarding ATSC. ATSC is actually the name of the committee, as you pointed out. The format is actually 8VSB, and you'll see it referred to as such in some of the geekier forums on the Internet.
    Technically, ATSC signals can be received in 8VSB or QAM modulation (though we are talking about over-the-air here), but I've modified the definition that the format is defined by the ATSC.

  4. #4

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    Yup, exactly; the formats are 8VSB and QAM.

  5. #5
    Contributor Aaron62's Avatar
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    ATSC is more of a standard than a format isn't it?

  6. #6

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    Quote Originally Posted by Aaron62 View Post
    ATSC is more of a standard than a format isn't it?
    Standards, formats, you can call it either or.

  7. #7

    Question What is the solution

    Ntsc/Atsc/8VSB/QAM - allot of diffrent names and signal types. What is the answer to gettingone set top box that can process NTSC and 8VSB signals in a Rack system environment? We have 14 different types of TV's all capable of processing DTV signals BUT.. each has to be manually switched between cable and antenna modes to view either Satellite or TV signals.
    We are a campus and we don't want to try and TRAIN everyone on the 14 different remote operations to change inputs.

    We have 6 satellite channels in the NTSC format and 13 Local channels in the 8VSB format.

    Any suggestions?

  8. #8
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    Default solution

    i just read your post from april - did you find a solution yet? I work for an AV systems integrator; we are using the ZeeVee 280 modulators for a customer with the exact same problem as you have; they may be a good fit for you. reply back if you still need help

    Quote Originally Posted by yafari1064 View Post
    Ntsc/Atsc/8VSB/QAM - allot of diffrent names and signal types. What is the answer to gettingone set top box that can process NTSC and 8VSB signals in a Rack system environment? We have 14 different types of TV's all capable of processing DTV signals BUT.. each has to be manually switched between cable and antenna modes to view either Satellite or TV signals.
    We are a campus and we don't want to try and TRAIN everyone on the 14 different remote operations to change inputs.

    We have 6 satellite channels in the NTSC format and 13 Local channels in the 8VSB format.

    Any suggestions?

  9. #9
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    Default Tuners

    I am looking at two samsung tv's one says the tuner is ATSC/Clear QAM and the other says it is DTV and Anolog. Are they the same and just two ways of saying the same or are they different and if so does one have an advantage over the other?

    Thanks

  10. #10
    Moderator dkreichen1968's Avatar
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    Quote Originally Posted by Guest View Post
    I am looking at two samsung tv's one says the tuner is ATSC/Clear QAM and the other says it is DTV and Anolog. Are they the same and just two ways of saying the same or are they different and if so does one have an advantage over the other?
    ATSC/Clear QAM = Digital over the air and unencrypted digital cable (unencrypted digital cable will probably not be around much longer for most cable customers due to the fact that the rules enabling the encryption of all digital cable channels just went into effect). DTV and analog, I assume, means ATSC, clear QAM, and analog. I doubt there will be any analog signals (apart from some really hick cable systems) past about 2015.

    Antennas still rule!!!

  11. #11

    Default

    I get the impression that some cable companies keep analog as a differentiator between them and the satellite companies.

    There's not a lot of HD channel addition going on anyway and cable internet DOCSIS 3 seems to be plateauing, which probably won't mean a lot more channels being used for data.

    On the flip side, going all digital will allow them to charge per TV and rake in the stb rental fees too.

  12. #12
    Guest
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    Default

    If the manual says Tuner: NTSC/ATSC, does that mean it is not compatible with cable that requires QAM tuners?

  13. #13
    Guest
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    Are NSTC and QAM the same thing? Will a cable company requiring QAM be able to work on a tv with tuner: NTSC/ATSC?

  14. #14
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    Guest, no NTSC is obsolete analog television, ATSC is advanced (digital) television currently sent free to you over-the-air. For QAM (in most areas, now) you need to rent a 'box' from your Cable Company.

    Jim

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