Type 517 radar
# 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 $m^2$ RCS target; 100 km against 0.1 $m^2$ 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
