Buying a Digital TV Set

If you go to an electronics store today to buy a new TV set, there are four types of sets that you will see on the shelf:
  • Analog TV sets

  • Digital-ready sets - They should be called SDTV sets. These TVs are normally 480p displays with an analog tuner (for the normal channels 2 through 83) built in. The problem with these sets is that their maximum resolution is the low 480p SD resolution, which eliminates the HD resolutions and makes the TV essentially useless in the future if you plan to watch HDTV programs.

  • HDTV-ready sets - These sets are essentially computer monitors able to display 1080i/p resolution in the 16:9 aspect ratio. They may or may not have analog tuners built in.

  • Integrated HDTV sets - These sets have a digital tuner for broadcast DTV signals integrated into an HDTV display. With the standards changing so much, you may end up paying for an integrated tuner that becomes obsolete.
The preferred way to handle HDTV is to purchase the components separately:
  • A 16:9 HDTV display capable of 720p and 1080i/p resolution
  • A digital receiver
  • An antenna
Since the HDTV display will be the most expensive piece and will likely last 10 years or more, buying the components in this way allows you to change the receiver if you need to. There are currently three types of receivers:
  1. You can purchase a set-top box and a Yagi antenna to receive broadcast HDTV signals.
  2. You can purchase a set-top box and a small satellite dish to receive HDTV signals from a satellite. See the DirectTV FAQ for an example.
  3. You can purchase a board for your computer, like the accessDTV board, along with a Yagi antenna, and use it to receive signals on both your computer monitor and your HDTV display.
The accessDTV board allows you to use your hard disk as a storage medium for digital TV broadcasts that it receives. It saves an entire 19.39-Mbps stream (including all sub-channels) to your hard disk.

For more information on digital television and related topics, check out the links on the next page.