 Ukrainian fighters have discovered and destroyed the rare SFKU radio-electronic warfare complex used by the Russian army. The complex has been registered on the Ukrainian territory three times so far, including in eastern Luhansk region in 2016, 2020 and 2021. Hidden between houses in the rear front, the complex was destroyed by a drone strike. This is the first case of SFKU complex being destroyed since Russia started its war of aggression against Ukraine in 2014. The comprehensive radio and radio engineering control is designed for protection against data leakage through technical channels of wireless communication. It is intended for the assessment of the electromagnetic environment, search, detection and express analysis of radio radiation, as well as for determining their location when working together with similar stationary and mobile complexes of technical control and electronic surveillance.