Q:

How does QAM work?

A:

Quick Answer

The Quadrature Amplitude Modulation (QAM) scheme works by changing the amplitude of two out-of-sync carrier waves to successfully transmit data. A QAM tuner enables users to obtain reception of unencrypted digital and HD stations through a cable connection and without the use of a set-top box.

 Know More

Full Answer

Most cable and digital televisions manufactured after 2006 are equipped with an internal QAM tuner. To find out if a television has the tuner, consumers can reference the "specifications" section of their owner's manual. Another way is to look at the remote control; the device of such televisions often bear a "dot" or "dash" button used in the tuning process.

Learn more about Business Resources

Related Questions

  • Q:

    How do wireless modem routers work?

    A:

    Wireless modem routers use radio frequency waves to receive data from the Internet or a network and to send data to personal computers. Routers use the same technology as radio, television and mobile phone networks through the use of modem and Ethernet cables. Once a wireless router is properly configured, it can send large amounts of data to multiple computers within a single home or work network.

    Full Answer >
  • Q:

    How does WhatsApp work?

    A:

    WhatsApp works by allowing users to send messages over a data connection, meaning users don?t have to pay for SMS, explains the official website. The cross-platform messaging application lets users send unlimited audio messages, videos and pictures, as well as creating groups.

    Full Answer >
    Filed Under:
  • Q:

    How does wireless Internet work?

    A:

    Wireless Internet works by utilizing a wireless network that employs radio waves to transmit data. A wireless adapter connected to a computer transforms the data into radio signals that are transmitted via an antenna. A wireless router then decodes the signal and sends it to the Internet.

    Full Answer >
  • Q:

    How does GIS work?

    A:

    According to the Environmental Protection Agency, a GIS, which refers to Geographic Information System, works by combining database functions with computer mapping to map and analyze geographic data. It uses a "layering" technique to combine various types of data. Special GIS software is used to analyze layered data and create new layers of data.

    Full Answer >
    Filed Under:

Explore