The AN/FPS-35 was a long-range, ground-based search radar developed by Sperry Gyroscope Company and used during the Cold War. It operated between 420 and 450 MHz and had an antenna that weighed 70 tons. The FPS-35 was first deployed in 1960, but was not operational until 1962. Frequent bearing problems plagued this radar because of its massive antenna, which had a concrete tower base 80 ft high to support it.
Only twelve AN/FPS-35 radars would become operational in the US. The radar was able to detect objects 200 miles away, providing enhanced electronic countermeasures. Originally developed at the Thomasville Aircraft Control and Warning Station, in Thomasville, Alabama, all of the radars have been knocked down by the federal government, except for the one at Camp Hero on the eastern tip of Long Island, New York.