Will adjectives TVs (non-HDTV) become archaic or can we purchase an adapter?
Answers: (This answer assumes that you live in the US)
The matured TV's will still work. There are converter boxes that will allow them to receive all of the contemporary digital over the air broadcasts, including "HD" broadcasts. Starting surrounded by Jan 2008 the government will enjoy a coupon program so people can buy a couple of them at around $20 each.
Cable & satellite customers can verbs to get analog service after the over the atmosphere analog broadcasts end on 2/17/09. This date single effects over the air broadcasts.
Your query includes a common misconception. You involve a digital tuner to receive the digital channels; it does not hold to be "HD". "HD" programing has a more detailed picture than non-HD, but if your converter or TV can lone display SD quality, the reciever downconverts the picture information to clash what the TV can display.
Some of these broadcasts will be in "HD", others will be contained by "SD". This doesn't matter to populace who use the converter boxes because they convert all of the digital signals, including HD ones, to SD. SD is equivalent to the ability of picture that you get from a DVD player.
You can buy unknown SDTVs that can receive all the untried digital OTA channels. Like the converter boxes, they convert HD signals to SD.
Cheat Sheet
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Old type OTA TV signals = NTSC = "Analog TV"
New type OTA TV signals = ATSC = "Digital TV" = DTV
Digital signals used on some cable systems = QAM
OTA = "Over the Air" = stuff you achieve through your TV antenna
"CECB" = government speak for TV converter boxes that qualify for their coupon program. Stands for "Coupon-Eligible Converter Box"
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