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AN/APN-59

Description of the radar set, tactical-technical characteristics Описание; Основные тактико-технические характеристики (Базы данных)

Figure 1: Antenna AS-653/APN-59

Figure 1: Antenna AS-653/APN-59

Specifications
frequency: 9 375 MHz (X-Band)
pulse repetition time (PRT):
pulse repetition frequency (PRF): 180, 350, 1 025 and 2 000 Hz
pulsewidth (τ): 4.5, 2.35, 0.8 and 0.35 µs
receive time:
dead time:
peak power: 58 … 75 kW
average power:
instrumented range: 240 NM (≙ 444 km)
range resolution:
accuracy:
beamwidth: β =3°; ε =5°
hits per scan:
antenna rotation:
MTBCF:
MTTR:

AN/APN-59

The AN/APN-59 is an older navigation, search and weather radar, formerly used in C-130, C-135, B-57, C-133, C-141 and KC-97. The radar operates in X-Band and replaced the former AN/APS-38 units.

The reflector of the antenna was divided in an upper and a cahngeable lower half. The lower part could be exchanged by another formed lower half to provide different antenna patterns depending on the task: a thin pencil beam for long range search and weather reconnaissance, and a wider beam for navigation and overview at close range.

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