What is the difference between ATSC and NTSC?
Difference between ATSC and NTSC tuners on a TV. An ATSC tuner is often called an ATSC receiver or HDTV tuner. It allows reception of ATSC digital television (DTV) signals broadcast over the air by TV stations. To receive ATSC (DTV) signal the TV must be hooked up to some type of external entenna.
If your TV is an HDTV, you can view the HD signals that we transmit in the clear. If your HDTV has a built-in digital television (DTV) tuner (also known as an “ATSC” tuner), you can connect an antenna to your TV and receive local broadcast stations' signals over the air.
- Look for labeling that says “Digital Tuner Built-In,” “DTV, ” “Integrated Digital Tuner,” “HDTV,” “ATSC,” or , “Digital Receiver.” You can also check your owners manual, or look up the specifications online by searching for the TVs make and model. Don't confuse this with the antenna. There are no “digital antennas.”
- If you have cable or satellite service, you will continue to receive the same stations. If you don't have either of those services, you'll still need some sort of internet connection (DSL or cable) for the smart services, and then an HDTV antenna to pull in local, over-the-air broadcasts for free.
- If you have an old tube TV like the one shown here, or a flat screen that does not have a built-in digital tuner (made before 2006, when digital tuners were mandated), you will need a digital TV converter box (also called a tuner box) in order to get free TV using an antenna.
QAM is a digital television standard using quadrature amplitude modulation. In cable systems, a QAM tuner is linked to the cable in a manner that is equivalent to an ATSC tuner which is required to receive over-the-air (OTA) digital channels broadcast by local television stations when attached to an antenna.
- It turns out that QAM-256, which was originally intended for small cells, delivers benefits to operators and consumers in the macro network as well. It refers to Quadrature Amplitude Modulation, which is the means by which a carrier signal, such as an LTE waveform, transmits data and information.
- QAM is a digital television standard using quadrature amplitude modulation. In cable systems, a QAM tuner is linked to the cable in a manner that is equivalent to an ATSC tuner which is required to receive over-the-air (OTA) digital channels broadcast by local television stations when attached to an antenna.
- Well, according to Wikipedia, QAM stands for "quadrature amplitude modulation, the format by which digital cable channels are encoded and transmitted via cable television providers." More specifically, it allows you to pull in certain digital cable channels without the use of a set-top box.
Updated: 2nd October 2019