Description of the radar set, tactical-technical characteristics
Figure 1: S 239
|frequency:||3 000 MHz
|pulse repetition time (PRT):|
|pulse repetition frequency (PRF):||160 … 550 Hz|
|pulsewidth (τ):||2 µs|
|peak power:||> 900 kW|
|instrumented range:||110 NM (≙ 200 km)|
|hits per scan:|
The S 239 was a high-power long-range heightfinder 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 beam width of 1 degree and a horizontal beam width 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.