OVERVIEW: The Type 517  is a shipboard 2-D early warning and acquisition air search radar operating in the NATO "A" band. 

DETAILS: The Type 517  radar is used on  larger ships of the Chinese Navy. It is very similar to the Russian Knife Rest B Radar, using a similar Yagi-Uda array, it has much more modern electronics. It is capable of tracking more than 20 targets. Because of the long wavelength, the radar has anti-stealth and Anti-ARM (anti-radiation missile) attack capabilities. 


Specifications:

Frequency: 		 180-210 MHz (A Band (NATO), VHF Band (IEEE))
Power output: 		25 kW (peak)
PRF:			50-100 pps 
Pulse width: 		4-12  µs	
Accuracy:			200 meters (range); 1° (azimuth)
Range: 
	4m2 RCS: 		189nm 
	0.1m2 RCS:	54nm
	 		
			                      					
NOTES: IOC  1952.  The Type 517 is a very similar to the Knife Rest B.  The radar has been significantly updated for use against stealth aircraft.

SOURCES:   NATO, "Current Soviet Block Equipment: Landbased" (12 February 1968) at page 1-A-19 ; Pike, John. "KNIFE REST." GlobalSecurity.org. Last modified 8, 2019. https://www.globalsecurity.org/military/world/russia/knife-rest.htm. ;"SOV - P-10 (." Armedconflicts.com. Accessed August 29, 2024. https://www.armedconflicts.com/SOV-P-10-Knife-Rest-B-C-prehladovy-RL-t37633. ;"Type 517M - Radartutorial." Grundlagen Der Radartechnik. Accessed August 29, 2024. https://www.radartutorial.eu/19.kartei/07.naval2/karte036.en.html ; Jane's Radar and Electronic Warfare Systems, 2002-03, "P-10 early warning radar", 02 July 2001 ; "Type 517 Radar." Wikipedia, the Free Encyclopedia. Last modified December 25, 2022. https://en.wikipedia.org/wiki/Type_517_radar ; Tracey, Mrs. "High Accuracy Air / Land Surveillance Radar System Of Long Range Detection." Quality Electro Optical Tracking System & Electro Optical Sensor System Factory from China. Accessed August 30, 2024. https://www.eo-irsystems.com/sale-7838642-high-accuracy-air-land-surveillance-radar-system-of-long-range-detection.html.
