How many workers does it take to change the light bulb on a 1500′ T.V. Tower in South Dakota? If you’re a tower climber like Kevin Schmidt then it only takes one person to climb the tower. The light bulb he’s changing is at the top of an inactive 1500′ high analog broadcast antenna for KDLT TV near Salem, SD. This line of work is not for the faint-hearted and is best for those who enjoy an Office With A View.