Mike Himowitz MikePluggedIn.com

Technology demystified by Mike Himowitz

The switch to digital TV

TV broadcasts as we know them will end on February 17, 2009. That's when the government has told local stations to turn off their traditional analog transmitters and switch to a new digital television system. If you get your TV through an antenna (as opposed to cable or satellite), and you haven't done anything to prepare for the switchover, your sets could go dark on the morning of February 17.  Want to learn what's going on with the DTV transition and how to prevent a TV disaster in your house? Don't wait till the last minute!

Check out my DTV Facts Page now.

DTV Transition news

Here are the latest headlines about the DTV Transition:

NAB seeks escape hatch from complete switchover

The National Association of Broadcasters' Television Board of Directors has voted to support legislation that would allow TV stations to continue transmitting emergency alerts and information about the digital TV transition over their analog channels for several weeks after the Feb. 19, 2009 switchover.

This is the first crack in the alliance between broadcasters and the government, which has been telling everyone how wonderfully the transition campaign has been going and resisting attempts to tinker with the deadline. The FCC, with congressional backing, has told broadcasters to turn off their analog transmitters Feb. 19.  Currently, local stations arebroadcasting simultaneously in both formats.

The change will leave millions of analog sets dark unless the owners have hooked up digital converter boxes. TV sets hooked to cable or satellite feeds -- and 80 percent of American homes have at least one -- will not be affected. Cable companies will continue to provide analog signals to their customers for several years, at least.

Millions who receive broadcasts over-the-air, with antennas, have bought converter boxes, but millions more haven't gotten around to it yet. And 8 to 10 percent of Americans still aren't aware of the switchover, according to the latest surveys.

There's also evidence that even with converter boxes, 15 to 20 percent of over-the-air viewers won't be able to get all the channels they get now unless they buy a new antenna -- an expense that can run into hundreds of dollars.

One problem is that folks who buy converter boxes now won't know for sure whether they'll get all their channels until the day of the switchover. That's because so many channels will be switching frequencies -- in addition to using a new digital transmission system.
Because digital signals don't always behave like analog transmissions, some digital signals that come in fine on the temporary frequencies local broadcasters are currently using may be not be strong enough on their permanent frequencies. Digital signals also suffer from the so-called "cliff" effect: if they're strong enough, they produce superb images, but if they're not, you won't get anything on that channel.

Given these potential problems, it makes sense to give stations the option of continuing to broadcast emergency information and messages alerting viewers about the transition for some time after the official date. Aside from the fact that worried politicians want to squeeze the switchover between the Super Bowl and the NCAA basketball tournament, there's no reason it has to be done in one day.

Unfortunately, the even if the bills (Senate 3663 and House Resolution 7013) become law, it won't help all viewers. Stations that have chosen to broadcast digitally on the same frequency they used for analog broadcasts won't be able to use both transmitters after the change.

"This voluntary commitment would apply only to stations where the continuation of the analog signal is technically feasible," the NAB board said it a resolution approved on Wednesday, Oct. 15. "The NAB will work closely with the FCC in implementing a reasonable program taking into account local stations' technology and market specifics."

The legislation is sponsored by Sen. Jay Rockefeller (D-W.Va.) and Rep. Lois Capps (D-Calif.)

FCC to kick off DTV transition tour

Still worried about a potential political train wreck when the nation's broadcasters turn off their analog transmitters in February, the FCC plans a tour of major markets to explain how viewers can keep from being left in the dark. From PC Magazine (Aug. 18)

Casualty of transition: Cell phone TV broadcasts

 TV CEll PHoneOne casualty of the DTV transition is the  wireless industry's long-range plan to provide  widespread, direct-to-phone TV broadcasts in the U.S. Although Verizon and AT&T both offer TV broadcasts on some models, the service is a limited repackaging of highlights from network and cable channels broadcast over a specialized UHF system that requires special hardware in the phone -- and not a full-scale portable medium for full broadcasts of entertainment, news and sports. Read the AP report.