A dozen major TV groups are teaming up to provide content and spectrum for a national mobile DTV service called Pearl Mobile DTV Company LLC.

Belo, Cox, Fox, Gannett Broadcasting, Scripps, Hearst Television, ION Television, Media General Inc., Meredith Corp., NBC, Post-Newsweek Stations, and Raycom Media will get together to form a "standalone joint venture," according to an announcement at the NAB Show in Las Vegas.

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