OVERVIEW: The Type NRJ6A is a  radar warning receiver (RWR)

DETAILS: The Type NRJ6A RWR is a shipboard radar intercepting and threat warning system, capable of operating in a heavy jamming environment.  It provides cuing for shipboard defense systems.

		
 NOTES: IOC  Can be fitted on small surface ships

SOURCES:  https://chinamilitaryelectronics.blogspot.com/2009/10/nrj6a-naval-electronic-warfare-system.html