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Description of the radar set, tactical-technical characteristics

Figure 1: AR-5 installation at Burrington, (50°56'3.311" N   3°59'6.986" W)

Figure 1: AR-5 installation at Burrington (UK)
(50°56'3.311" N   3°59'6.986" W)

frequency: 1 250 … 1 355 MHz
pulse repetition time (PRT):
pulse repetition frequency (PRF): 680 … 270 Hz
pulsewidth (τ): 2 … 5 µs
receiving time:
dead time:
peak power: 2 × 2 MW
average power:
instrumented range: 300 NM (≙ 555 km)
range resolution:
beamwidth: 1.2°
hits per scan:
antenna rotation: 4 … 14 rpm


AR-5 was an L-band early warning and fighter control radar, which was used for air traffic control purposes also (en-route radar).

AR-5 was a frequency diversity radar using two tunable magnetron transmitters. The transmitter’s pulse duration and the pulse repetition frequency (PRF) could be selected from the wide range offered, as long as the duty cycle remained approximately the same. The PRF was staggered over seven periods to minimize non-synchronous pulse interferences and non-ambiguous returns.