Phoenix, Arizona, February 6, 1997 A man climbed to the top of a 300-foot radio tower Thursday and perched there for about 90 minutes before falling to his death. Investigators couldn't immediately determine whether the man jumped or fell accidentally from the KTAR-AM tower. ``We don't know if he went up there to jump. We may never know,'' said Detective Mike McCullough. An autopsy will be conducted to determine if the man was intoxicated. The man's name was being withheld until relatives could be notified. A crowd had gathered below and police in a helicopter tried to talk him down. But officers were unable to get close enough because of high winds and fears that currents generated by the blades would knock the man off. Television footage showed the man leaning into the wind and taunting the crowd, then grabbing onto a pole before falling backward.