it is not the same system. it completes Korall
You should watch the video
This video has various mistakes. Again, REDET-I and KORAL are designed for the same purposes, albeit REDET-I is the first iteration and less capable. REDET-II is the upgraded version with the more capable KORAL subsystems and infrastructure. REDET was developed for the Army while KORAL was developed for the Air Force. Both systems are consist of two separate vehicles for Electronic Attack (EA) and Electronic Support (ES). People mostly confuse the separate vehicles of the same system with different systems.