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AN/SPN-23

Description of the radar set, tactical-technical characteristics

Figure 1: AN/SPN-23

Figure 1: AN/SPN-23

Specifications
frequency: 9 345 … 9 405 MHz
(X-band)
pulse repetition time (PRT):
pulse repetition frequency (PRF): 1 000 Hz
pulsewidth (τ): 0.2 or 0.45 µs
receiving time:
dead time:
peak power: 7 … 10 kW
average power:
instrumented range: 20 NM (≙ 37 km)
range resolution:
accuracy: 2%; 2°
beamwidth: 1.8°
hits per scan:
antenna rotation: 15 rpm
MTBCF:
MTTR:

AN/SPN-23

AN/SPN-23 (manufacturer’s designation: Model 320 Radar) was an operating in the X-band surface surveillance and navigation radar. When used on minesweepers, the radar was designated AN/SPS-36.

The antenna was a 1 m wide waveguide slot antenna. Bearing angle and distance were displayed on a PPI scope with 7 inch diameter at scales of 1, 2, 5, 10, and 20 nautical miles.

The radar was launched around 1957.

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