Repellent-1 (Russian: Репеллент-1) is a Russian electronic warfare system[1] designed to suppress the operation of unmanned aerial vehicles[2] at a distance of up to 30 to 35 km (19 to 22 mi).

The system is able to detect miniature air targets from their control signals at a distance of more than 35 km (22 mi), but is able to suppress drones only at a distance of not more than 2.5 km (1.6 mi).

It is installed on the chassis of MAZ (MAZ-6317 [uk]) or KAMAZ depending on the wishes of the customer.

[5][4] On August 11, 2018, the OSCE SMM noted in a report that on July 28, near the village of Chornukhyne, the UAV mission recorded four EW systems at once, including Repellent-1.

[4] Armenia has lost two operating stations of the Repellent-1 complex.