AN / FPS-35

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an AN / FPS-35 radar at Camp Hero State Park in Montauk , New York

The AN / FPS-35 is a military air surveillance radar from Sperry . The first device was delivered in 1960 and installed in Thomasville (Alabama) , followed by another four devices by 1962. A total of 12 devices were built and put into service.

The radar device was erected in a fixed location in five-story concrete towers. Due to the enormous mass of the antenna of over 80  tons , considerable problems arose during operation. The drive of the antenna took up a separate floor and was accomplished by six electric motors with 100 HP each .

With the exception of the device in Camp Hero State Park in Montauk , New York , all other radar devices have meanwhile been dismantled.

Technical data AN / FPS-35
Frequency range   420-450 MHz
Pulse repetition time  
Pulse repetition frequency  
Transmission time (PW)  
Reception time  
Dead time  
Pulse power  
Average performance  
displayed distance   370 km
Distance resolution  
Opening angle  
Hit count  
Antenna round trip time  

Web links

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