FPS-6

 Long Range Height Finder Radar Set - A Long Range Height Finder Radar set built by General Electric Company. Deployed to long-range radar sites in the 1950s and early 1960s, usually in pairs and as part of the SAGE network. Variants include the FPS-6A, FPS-6B, FPS-90, FPS-116 and the mobile version MPS-14.

This is a nodding type height-finder, initially manually positioned by an operator. Under the SAGE System, it was positioned by the SAGE Direction Center. Target identification and height determination were made by an operator under both the manual and the automatic SAGE System. The FPS-6B incorporated a higher power magnetron and variable nodding feature not available in the other versions.

See Also:
 * FPS-90
 * US Radar Sets

Sources:
 * MIL-HDBK-162A, 15 Dec 1965.
 * MIL-HDBK-162A, 15 Dec 1965.

Links:
 * Radomes - FPS-6
 * Radomes - Radar Equipment
 * Wikipedia - FPS-6