S 247 (Marconi)
Description of the radar set, tactical-technical characteristics
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 µs | 1 … 5.5 µs |
| receiving time: | ||
| dead time: | ||
| peak power: | 3 MW | 2.5 MW |
| average power: | 3.75 kW | 3 … 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.