Description of the radar set, tactical-technical characteristics
Figure 1: AN/SPN-8 on USS Lexington (CV-16) in 1962
|frequency:||9 000 … 9 180 MHz
|pulse repetition time (PRT):|
|pulse repetition frequency (PRF):||4000 Hz|
|pulsewidth (τ):||0.25 µs|
|peak power:||40 … 60 kW|
|instrumented range:||6 NM (≙ 11 km)|
|hits per scan:|
AN/SPN-8 was an operating in X-Band shipboard carrier controlled approach system designed to guide aircraft from a position as far as 6 nautical miles out to a position as close as 200 feet from touchdown on the aircraft carrier.
The antenna of type AS-477/SPN-8 was a truncated paraboloid fed by a feed horn. It was covered by a cylindrical radome and swiveled back and forth in a sector of 100 degrees in azimuth with 3 oscillations per second.
- Military Standardization Handbook United States Radar Equipment Manual TM 11-487C-1 1965, p. 1176ff