The School Antenna is located on a building roof at Kadic. It allows electronic signals to reach the school. In Satellite, Jim was ordered to take it down to disable cell phone service, after an incident in which all the students' cell phones received a call. Unfortunately for him, he was electrocuted and almost fell to his death. Luckily, Odd and Ulrich were there to catch him and transport him to the Infirmary. In this same episode, X.A.N.A. used it to broadcast its signal to the dish atop the nearby PAJH TV building, from which the signal was sent to the French secret service's antenna, then to a military satellite.