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S 706

Description of the radar set, tactical-technical characteristics

Figure 1: S 706

S 706 Radar, © 1972 Marconi

Figure 1: S 706

Specifications
frequency: 3 ± 0.15 GHz
(S-Band)
pulse repetition time (PRT):
pulse repetition frequency (PRF): 1 000 Hz
pulsewidth (τ): 12.5 µs
receive time:
dead time:
peak power: 160 kW
average power: 2 kW
instrumented range: 64 NM (≙ 118 km)
range resolution: 250 m
accuracy:
beamwidth:
hits per scan:
antenna rotation: 6 min⁻¹
MTBCF:
MTTR:

S 706

S 706 was a coastal surveillance radar operating in S-Band developed by Marconi.

The antenna provides a good directivity and small side lobes up to an altitude of 40 000 ft. It incorporates a single curvature reflector and a linear squintless feed, offering high gain. The antenna performs a cosecant squared pattern. The transmitted electrical field was linear horizontal polarized. The receiver's pulse compression gain was 20-fold, the compressed pulse width was 0.625 µs. The radar was able to supply several PPI scopes with a diameter of 16" (40 cm).

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