HDTV Tuner
So you just bought your HDTV. What many people don't realize is that just because you have an HDTV, it doesn't mean that you are getting high definition channels. There are two types of high definition programming, the kind you pay for from your local cable company or satellite provider
and the free kind that is transmitted over-the-air for anyone
with an HDTV and an HDTV antenna to have. In order to get
your free HDTV channels, you will need an HDTV tuner and an antenna.
Some HDTVs
come with a built-in HDTV tuner; if your television does not, you
will
have to buy a separate tuner.Which Channels are Free?
The free HDTV channels are the same local channels you would be able to get on your TV using the bunny ears. These channels are from the major networks such as NBC, ABC, CBS, FOX, etc. The first thing you need to do is find out if the over-the-air HD channels are available in your area. Keep in mind, the HDTV tuner does not convert regular broadcasts into HD. The job of the tuner is to receive the HD broadcasts that are transmitted in your area. If your local stations do not broadcast these signals, the tuner is not going to help you. You will need to go with a cable company or satellite provider and order HD programming.Supported Resolution and Screen Formats
When choosing which HDTV tuner to purchase, look for the different resolutions it supports. These resolutions are denoted by 480i, 480p, 720p, 1080i. Make sure that the tuner you choose is capable of supporting the resolution options of your HDTV. Also make sure that the tuner is capable switching between 16:9 aspect ratio (Letterbox) and 4:3 (Standard) when necessary. While 16:9 is becoming more popular, most television programs are still displayed in 4:3 so it is important that your HDTV tuner can handle both.HDTV Tuner Outputs
There is an array of outputs that can be found on HDTV tuners. Knowing which connections your home theater receiver and HDTV are able to accept will be invaluable in choosing an HDTV tuner. The articles on connections will give you the information on which connections will provide you with the greatest level of quality. In terms of video outputs, DVI and HDMI are two that you should look for on your tuner. For digital audio, the two most prevalent connection cables are optical and digital coaxial. Note that HDMI carries both digital audio and digital video on the same cable. This eliminates the need for multiple connections.If you have an HDTV, make sure you are actually watching HD channels. The over-the-air HD broadcasts are free to anyone with an antenna and an HDTV tuner. Make sure you take advantage of its availability.