Dozens of millions of TV sets in the US receive local channels via off-air broadcasts. And this number is growing as more and more networks offer free of charge HDTV broadcasts over the air. That's right, over the air HDTV is totally free, get a decent off-air antenna and stop your HDTV programming subscription payments.
How Is HDTV Better?Which HDTV antenna to choose? Most of all it depends on the area you live in. Depending on the broadcasts available in your location and a distance from the transmitting towers, you will have to decide on the frequency band you need, antenna directivity, amplification and placement.30 images per second (in Europe 25) are shown by normal analog TV sets. It does this by writing image lines horizontally, 525 lines in one image (In Europe 625) on the screen. The number of pixels on one line is about 500. This would be a definition of 500 pixels per line by 525 (or 625) lines. Compared to modern computer monitors this is really bad. Even the lowest resolutions monitors have higher resolutions (640 x 480) than an analog TV.Analog TVThe FCC (Federal Communications Committee) has mandated that all TV stations in the USA have to be able to broadcast HDTV programs by the year 2006. The mandates of the FCC do not have an impact on just the broadcast companies, but also on cable companies and consumers.HDTV is the future, and a really big step forward. We once started with simple black and white TV, then moved to color TV, and wide screen TV. But all those systems were still based on the same signals as the original black and white TV used. When color TV was introduced it was not possible to force the complete population to throw away their black and white TV-sets and buy a color TV set. Therefore a color TV signal still needed to be understandable for a black and white TV. This prohibited the improvement of picture quality until the age of Digital TV.Normal TV has a resolution of about 210.000 pixels. An HDTV screen has a resolution of upto 2.000.000 pixels, which gives up to 10 times more picture detail.There are numerous pros and cons with the particular antenna types and brands, so be sure to research a specific model before you buy. Consider looking at customer reviews, to see how owners of the model in question rate the antenna in a variety of arenas.
There are numerous pros and cons with the particular antenna types and brands, so be sure to research a specific model before you buy. Consider looking at customer reviews, to see how owners of the model in question rate the antenna in a variety of arenas.
Author: Eric Gov
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