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AN/FPS-74

Description of the radar set, tactical-technical characteristics

Figure 1: AN/FPS-74

Figure 1: AN/FPS-74

Specifications
frequency: S-Band
pulse repetition time (PRT):
pulse repetition frequency (PRF): 974 Hz
pulsewidth (τ): 1 µs
receive time:
dead time:
peak power: 1 MW
average power:
instrumented range:
range resolution:
accuracy:
beamwidth: 0.6°
hits per scan:
antenna rotation:
MTBCF:
MTTR:

AN/FPS-74

AN/FPS-74 was operating in S-Band frequency-diverse gap-filler radar.

In October 1960, USAF established a program to modernize all existing SAGE gap filler sites and to equip all programmed SAGE gap filler sites with the AN/FPS-74. The program called for a total of 182 FPS-74's — 137 in the U.S. and 45 in Canada. Originally, Budd Electronics, the contractor, was to install the first set by 1 October 1962 and it was to be operational by 1 January 1963. However, the program fell far behind because Budd failed to produce satisfactory equipment. USAF advised on 20 January 1964 that the FPS-74 program would be cancelled.

The prototype, which had functioned reasonably well up to that point, was subsequently made available for research projects.

Sources: