Television Buying Guide 3

Air Antenna Receivers
The law requires most television sets sold after March 2007 to include a built-in tuner that can receive high-definition programmes broadcasted on air by a simple antenna. If the television is not equipped with such a tuner, an external tuner or box is required to watch these programmes. So most televisions (not monitors) sold after that date, must comply with the aforementioned law to accommodate DTV (Digital Television) transition.

Digital Television Transition
A bill has been passed by the congress that requires over-the-air stations to switch to digital broadcasting between 17 February and 12 June 2009. After the final date, televisions with old NTSC tuners will be unable to receive over-the-air programmes. So many people who use “rabbit ears” or rooftop antenna and their televisions do not have a tuner, will stop receiving broadcasts. As a result, a subsidy program has been created which provides $40 coupons (limit of 2 per household), that can be used toward a digital converter box.

Television Buying Guide 2

Television Types
Televisions can be categorized into four different groups according to what type of signal they can accept and what picture quality they can show:

1. Analog
2. SDTV (Standard Definition Television)
   
3. EDTV (Enhanced Definition Television)
4. HDTV (High Definition Television)

Analog
This type of television can not display HDTV programmes. It can only show standard definition programmes found on regular television, cable, or satellite channels.

SDTV
This type of television (standard-definition) is basically an analog television plus a built-in ATSC tuner. Therefore, it can receive digital television broadcasts. It will display a picture from these broadcasts, but HDTV shows will not look nearly as detailed as they would on a true HDTV.

EDTV
This type of television (enhanced-definition) is usually a type of television that can display HDTV signals but doesn't have enough resolution to really do them justice. Most often it applies to plasma televisions and denotes 852×480 resolution.

HDTV
High-definition televisions, or HDTV, can display standard television, progressive-scan DVD, and HDTV signals. They are by far the most common type of digital television. Nearly every plasma, LCD, and rear-projection television is an HDTV.