Digital TV transition concerns get technical

Even if all goes smoothly, next February's digital television shift is likely to generate hundreds of thousands of complaints from television viewers around the country. A smaller digital footprint may affect as many as 15 percent of television markets in the US. The Federal Communications Commission is still calculating what impact that may have nationwide. It's not certain what -- if anything -- the FCC or broadcasters can do for affected viewers, short of recommending that they buy a bigger antenna.