The Federal Aviation Administration, who operates the tower, is actually a tenant. The office area is 7,000 square feet. The equipment room contains all the necessary equipment to support the operations of the tower. Some of the equipment located in this area include radios for the tower's use as well as remote radios connected to antennas on the field that are used by O'Hare Airport, recorders, digital modems to O'Hare Airport, and the ILS Status Control master unit. All of this equipment is maintained and repaired by a third party company.
Emergency power is provided by a generator.
Additionally, key equipment have their own battery back-up. Tape machines are used to record all radio traffic. Banks of radios are tuned to each frequency that is used in the tower and by O'Hare Airport.