Fox Broadcasting Co. said Monday it will carry all future addresses by President Reagan. "We notified the White House of this and they were very, very appreciative because there was a great deal of anger" about the major networks' decision last week not to air Reagan's Contra-aid speech live, said Fox Broadcasting President Jamie Kellner. "There was no reason for us to carry it if the networks do. But when they don't, then it becomes counterprogramming," Kellner said. CBS, NBC and ABC aired excerpts of Reagan's Feb. 2 speech in their news programs, but all three refused to give the White House live air time.