At this point, there's almost no excuse.
People who don't know that tomorrow is the day their TV broadcast signal switches from analog to digital have either been living in a cave without TV or are simply tuned in to the wrong channel.
"There are not very many people left who are going to be affected by it," said Rick Battistini, whose family owns Haverhill TV & Appliance at 27 Washington St.
The original Feb. 17 deadline for the shutdown was delayed at the request of the Obama administration after funding ran out for $40 coupons the government offered to help people buy converter boxes for old TVs.
Now, officials say the country is much better prepared than in February, though they still expect some viewers to be confused.
About 3.1 million U.S. homes were unprepared to receive digital signals as of late last month, according to the Nielsen Co. That's half the number that were unprepared in February, and the number will probably decline further by tomorrow, as procrastinators finally get around to replacing old TVs or hooking them up to converter boxes or cable or satellite service.
Some people may believe the analog shutdown will be put off once again. But President Obama debunked that with a statement last week: "I want to be clear: There will not be another delay."
By tomorrow, older, non-digital TV sets will lose all major channels unless they have an antenna and a converter box that allows them to receive digital signals, or if they are hooked up to cable, satellite or Verizon FIOS-TV.
For the past two years, federal, state and local authorities have been bombarding TV viewers with information about the switch, which is being made to free up the broadcast spectrum for public safety channels used by police and fire departments.
Local senior centers have been holding informational sessions about the switch since last year.
But some folks are still confused about the law, according to Jared Williams, a sales associate at Baron's Major Brand Appliance in Salem, N.H.
"It's mostly the elderly who are confused about what to do," he said. "They are misinformed. They already have cable TV and think they need a box for it. If you have cable, you have nothing to worry about, even if you have an old TV."
For people who already have cable or satellite, the transition will be unnoticeable. People will continue getting their channels without any interruption.
Many people who have new TVs and use them with so-called "rabbit ears" antennas should also be able to continue receiving their channels.
Anyone in doubt as to what kind of TV they have or whether they will get the new digital TV images has been urged to purchase converter boxes. The federal government has offered coupons to defray the cost of the boxes, which are available at most retail stores for around $50.
However, many local retailers report that they have run out of the converter boxes.
Some problems may also crop up for those using rabbit ears on new or old TVs, according to TV shop owners interviewed yesterday.
Whereas in the past if a station didn't have a strong signal, the screen would be filled with what was known as "snow," in the future if a signal is weak, the image may be completely lost or will be broken up by a series of squares.
Dick Dube, owner of Dick's TV and Appliance in Methuen, thinks some people with rabbit ears will wind up losing their TV image even if they buy a converter box because the digital signals are weaker than the analog ones.
"I told people right from the start, unless you're in a real good area, you won't get good reception from the rabbit ears," he said. "We've tried it all over the Merrimack Valley. It doesn't work anywhere."
Those people need to install a rooftop antenna or put an antenna in the attic in order to get the best reception, he said.
Jay Ponte, a salesman at Doyon's TV and appliance in Reading, agreed that people using rabbit ears for digital reception may suffer.
"Depending on where you're located, you might lose some channels," he said.
As a result, he and others are selling a lot of nice, new TVs.
"Sales of LCD sets have gone way up," said Battistini, of Haverhill TV & Appliance.
Cable TV subscriptions are also on the rise, according to Marc Goodman, a spokesman for Comcast.
He said that for the past 18 months, the cable company has been explaining the options for viewers, and recently advertised that it has "rapid-response teams" ready to head out to customers' homes with just a few hours notice to install cable and other services.
"If someone calls this morning, we're out there this afternoon," he said. "If they call in the afternoon, then we'll be there the next day."
Material from the Associated Press was used in this report.