Type 517 radar

Type 517 radar is believed to be an A-band/VHF air search radar widely deployed on PLAN surface vessels with 4 antennas in two crossed-brace supported pairs, one above the other, mounted in pairs on each side of a single tubular support carried on the turning gear.

Similar to the Russian P-8 'Dolphin'/KNIFE REST radar which China manufactures and deploys for the HQ-2 surface to air system complex, it is believed that Type 517 has similar capabilities and specifications. The system is manufactured by the Beijing Leiyin Electronic Technology Development Company (北京雷音电子技术开发有限公司).

Specifications
Technical Specification
 * System Band: meter-band
 * Beam width: 5° (H), 30° (V)
 * Scan coverage: 360°×30°
 * Range: 350 km against 4 m2 RCS target; 100 km against 0.1 m2 RCS Stealth aircraft
 * Accuracy: range error ≤200m, angle error ≤1°
 * Processing capacity
 * Multiple tracking: ≥ 20 pcs
 * Antenna
 * Antenna : Yagi-Uda array
 * Rotation speed: 6 RPM
 * Transmitter / Receiver
 * Frequency: 180–210 MHz (meter-band)
 * NF: <6 dB
 * Power Supply
 * AC: 220VAC (150~250 VAC)
 * Power consumption: 25 kW
 * Features
 * Non-coherent pulse compression (NCPC) system
 * Moving target automatically detection
 * Long range air surveillance
 * Other reported names:
 * Spider (export)
 * SUR17B