New Russian Anti-drone Electronic Warfare Device Worries Ukrainian Military

A new electronic warfare device that blocks the communication channels of drones is causing concern in among Ukrainian forces.
The device, called "Strizh-3" electronic warfare (EW) system works by suppressing the communication and control channel of surveillence drones as they pass overhead.
Unlike regular EW systems which are mounted on armored vehicles or placed atop drones exposing them to enemy attack, the Strizh-3 is hidden inside trenches and bushes.
Its small size (no bigger than a football) and light weight enlable it to be mounted on a small tripod and camouflaged from the prying eyes of electro-optical sensors.
A Facebook page called “Serhiy Flash,” that reports on Ukrainian military activity said, "To the attention of aerial intelligence. Fresh photos of the trench hunter with our drones. Complex of the Russian Federation "Striz-3". Dangerous and subject to (immediate) destruction."
"A sign that the system is in operation: the (drone) operator suddenly loses the picture and control,” it said.

Images of the anti-drone EW systems published by Serhiy Flash show several of the Strizh-3 units hidden in bushes and doughouts.
The Strizh-3 system consists of 6 directed antennas in a circle besides three antennas under the circular dome. It can recognize 81 different types of UAVs based on their electronic signals.
Earlier this month, Russia's Rostec industrial holding announced the development of the "Serp-VS" EW system with features similar to that of the Strizh-3.
Rostec said it has completed tests of the Serp-VS drone suppression systems at a facility of the Russian fuel and energy complex. The devices installed on the industrial territory of the oil company made it possible to detect and suppress intruder drones in the protected area. "Serp-VS" can operate autonomously at a remote position and protect both mobile and stationary objects.