The Georgia Tech Research Institute (GTRI) operates a far-field antenna test range at its facility in Cobb County, Georgia. The range consists of two multistory signal towers — source and receive — located 1,300 feet apart. The facility features a heavy-duty, three-axis positioner capable of handling antennas up to 30 feet in diameter and weighing up to 30,000 pounds. The range’s massive towers ensure extreme mechanical precision and stability. Photos by Rob Felt.