An HDTV should not eventually stop scanning for channels. Provided you have properly cared for your TV, this is not a common problem.
You will need an antenna and a HDTV with a tuner built in. You will then get your local channels in HD.
HDTV represents the regular picture and television channels that someone is used to seeing, but they are in high definition. This means that there will be a clearer picture.
There are three types of HD formats-720p, 1080i, and 1080p. Progressive and Interlaced Scanning are also available for an HDTV to use.
HDTV is a new format for displaying a TV picture. It has higher resolution and clarity than the old NTSC format. Most stations that are broadcasting digital signals are now using 4 channels for every 1 they had before. They are reserving some channels for HDTV format and some channels for NTSC format. An HDTV will display the HDTV format and probably the NTSC format as well. An HDTV monitor can display the same picture, but probably lacks a tuner to actually receive the television signals. You need to plug something into it like a computer, a DVD player, or a tuner. If that thing sends out an HDTV signal then you can see it on the monitor.
No, you do not need a separate HDTV antenna unless you are using the antenna to get your channels. If you have cable TV, then the antenna is not necessary.
You would need an HDTV antenna when you can get all of your channels and when you get bad signals. This is when the picture don't play clearly and it has bunch of lines.
No, and actually you will probably get more over the air channels than before, and with much higher quality than you might expect. Some of the channels are being broadcast in HDTV format, which has higher resolution than standard TV. Look at other questions about HDTV and how to find out what stations are in your area and how to choose the best antenna.
Not unless it has both kinds of tuners.
the ones on sat 129 are down few on 110 119
A whip antenna can certainly be used to capture TV channels on a HDTV. Since the set itself is digital, it will not require a converter box.
If you hook it up to rabbit ears or an omni-directional antenna than it is free. You will get only about 10 channels though (if you're lucky) and none will be HD.
One can convert an analog TV to HDTV by using a set top box or digital analog tuner converter box. One does require a HD ready TV though to be able to watch the HD channels.