S 239
Description of the radar set, tactical-technical characteristics
Figure 1: S 239
| Specifications | |
|---|---|
| frequency: | 3 000 MHz
(S-Band) |
| pulse repetition time (PRT): | |
| pulse repetition frequency (PRF): | 160 … 550 Hz |
| pulsewidth (τ): | 2 µs |
| receive time: | |
| dead time: | |
| peak power: | > 900 kW |
| average power: | |
| instrumented range: | 110 NM (≙ 200 km) |
| range resolution: | |
| accuracy: | |
| beamwidth: | |
| hits per scan: | |
| antenna rotation: | |
| MTBCF: | |
| MTTR: | |
S 239
The S 239 was a high-power long-range height-finder operating in S-Band. It was designed to operate in static installations in conjunction with long-range surveillance radars. The antenna is mounted on the roof of a small house containing transceiver, receiver and ancillary equipment.
The antenna consisted of a vertically mounted cylindrical parabolic reflector fed by a slotted waveguide. It formed a beaver-tail shaped beam with a vertical beamwidth of 1 degree and a horizontal beamwidth of 5 degrees. The antenna nodded mechanically 10 times per minute to cover a vertical angle between -1° and 25° relative to the horizon.
This radar was composed of existing assemblies of other radars but was not widely used.