วันศุกร์ที่ 25 เมษายน พ.ศ. 2551

HDTV Is Available Over-The-Air For Free

HDTV is the newest addition in a long line of high-tech entertainment gadgets. Many homes have already added HD programming to their satellite systems and added $$ to their bill . Some plans even have additional charges for local channels. But did you know that HDTV and digital signals are free if you have an antenna and an HDTV/tuner.
Yes, you may have to spend a little money . A well-known author once said 'There ain't no free lunch' . But this is close . If your old TV is not HDTV compatible, you will likely upgrade soon anyway . The older analog signals will cease to exist on February 17, 2009 . You can still get a tuner-box that will translate the digital signal for your older set but you will miss out on some of the advantages that come with digital service such as HD.
If you can dig through the garage or attic and find that old TV antenna that you discarded long ago, then you are well on your way.
This type of service is called over-the-air. It is free. Now that's refreshing in this world of pay-parking, pay-toilets, pay-internet, pay cell phones etc. Even water is not free anymore.
If you live close to a larger city, then you can very likely receive all your local channels, many of which will broadcast some of their programming in HD. The remainder of their programming will be either digital or the older analog signal. Your trusty antenna may pick up all of these signal types. There is some variation. Your milage may vary.
If you live in a rural area, you may be limited it what you can receive. But if you live within 75-100 miles of a big town, then there is a very good chance you can get some digital service for free. But check with a local store or ask neighbors who have an antenna before you buy anything. You can also find good references on the internet.
HDTV antennas are available in two flavors, Directional and Omni-directional. If you live in a metropolitan area where there are many strong signals available, then an Omni-directional antenna is fine. These may also be placed indoors and avoid the need to install an outdoor antenna. If not, a directional antenna is better. You will have to turn it to gain the best signal. But you can get a rotor that will allow you to turn it from the comfort of your easy chair.
Outdoor antennas must be installed. This is best done by a professional. Don't scrimp here ! A well-done install is worth every penny. But if you are determined to install your own, here are some important considerations :
1. Stay well away from overhead power lines. Plan your install so they are as far away as possible.2. Keep the length of the wire from antenna to TV as short as possible. Avoid flapping in the wind.3. Don't raise the antenna any higher than necessary.4. Be sure it is properly grounded to avoid lightning damage.5. Be sure the antenna is well-anchored to your house. It must easily stand up to gusty winds and not rotate or topple.
How do I pick an antenna ?
Use what you have especially if you live in a metropolitan area. It will likely work ok. But if not, find an antenna that meets your needs. I have seen many at garage sales that people will give away.
There is a color-coded classification system for outdoor antennas. The colors used are Yellow, Green, Light Green, Red, Blue, Violet, and Pink. In general, as you move from Yellow toward Pink, you are moving from areas with very strong local signals toward fringe areas where signals are more difficult to receive.
Use the internet to research antennas. One site is AntennaWeb.org . It provides a tool that will show you what signals you should be able to receive and what type of antenna to use.
There are lots of Pros and Cons in using an antenna. But, in my book, the Pros outweigh the Cons. You can't beat free or almost free.

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