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S 247 (Marconi)

Description of the radar set, tactical-technical characteristics

Figure 1: S 247 (Marconi)

Figure 1: S 247 (Marconi)

Specifications
frequency: 2.7 … 2.9 GHz
(S-Band)
1.30 … 1.365 GHz
(L-Band)
pulse repetition time (PRT):
pulse repetition frequency (PRF): 200 … 550 Hz
pulsewidth (τ): 2.5 … 5.5 µs1 … 5.5 µs
receive time:
dead time:
peak power: 3 MW2.5 MW
average power: 3.75 kW3 … 4 kW
instrumented range: 140 NM (≙ 260 km)
range resolution:
accuracy:
beamwidth: 0.53°1.25°
hits per scan:
antenna rotation:
MTBCF:
MTTR:

S 247 (Marconi)

S 247 (Marconi) was operating in S and L-Band long range air surveillance radar.

The antennas were mounted back-to-back using a squint-less feed. The S-band antenna used a single curved parabolic reflector providing a fan beam pattern. The reflector of the L-band antenna is a modified parabolic reflector for cosecant-squared pattern.