WBUR in Boston has a new general manager. Charles Kravetz, longtime news and programming director of New England Cable News, is stepping into the position to be vacated by Paul La Camera on Jan. 1, 2011. Upon arriving at the new cable channel in 1992, Kravetz assembled a news operation from scratch. Within five months he supervised the building of a newsroom, hired 90 staffers and started 24-hour programming. He also opened four new state bureaus and led the news team to Peabody, Murrow and duPont-Columbia awards.