A: Answer The LG B7A OLED 4K HDR Smart TV - 55" Class (54.6" Diag), Model # OLED55B7A has three built-in tuners. The NTSC tuner is your analog TV tuner that is built into every VCR and Television in America. Basically, its purpose is to bring in ANALOG broadcasts. Will receive Cable or Antenna Broadcasts. The ATSC tuner is the High Definition Tuner that was mandated to be included in every TV manufactured or sold in the U.S. since March 1, 2007, by the FCC. Its purpose is to receive OVER THE AIR (OTA) broadcasts from local channels via an Antenna, not cable. To utilize this you will need to connect an Antenna, whether a rooftop or attic mount and depending on your situation even a tabletop antenna will work to receive the local HD broadcasts. So when you see the icon in the bottom of your screen now that says available in HD/5.1 this is where you would need an ATSC tuner with an Antenna to receive them that way (or through HD Cable, or Satellite in some cases). Then the QAM tuner is a High Definition Cable tuner. Used to receive HD Cable broadcasts without a box, just connect your coax directly to the Television. You will need to pay for the programming from your cable provider. However, maybe 2% of the cable companies in the US have this as an option currently (they want you to rent their boxes instead). The more popular apps such as the Netflix, Amazon Prime Video, Vudu, Hulu and other apps are already preinstalled apps on the TV and you can download other compatible apps from the LG Content Store (App Store) using the LG Content Store feature in the TV...^IFV

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