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RL-4AS

Description of the radar set, tactical-technical characteristics

Figure 1: RL-4AS

Figure 1: RL-4AS

Specifications
frequency: 2.7 … 2.9 GHz
(S-Band)
pulse repetition time (PRT):
pulse repetition frequency (PRF): 600 Hz
pulsewidth (τ): 2 µs
receiving time:
dead time:
peak power: 2 × 800 kW
average power:
instrumented range: 110 NM (≙ 200 km)
range resolution:
accuracy:
beamwidth:
hits per scan:
antenna rotation: 6 or 12 rpm
MTBCF:
MTTR:

RL-4AS

RL-4AS was operating in S-Band Terminal Area Radar (TAR) intended for military air traffic control near airport. The RL-4 radar is a product of the former Tesla company. Eldis upgraded it to RL-4AS in 1994-1998.

The parabolic reflector with dimensions of 5 × 3,5 m provided a cosecant squared pattern. The antenna used two horn radiators for high- and low-beam patterns to improve fixed-target rejection. It can be selected linear or circular polarization. A magnetron was used in the transmitter. A mobile version was installed on a TATRA-148 truck.