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S 239

Description of the radar set, tactical-technical characteristics

Figure 1: S 239

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 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.