Estonian electronics and defence industry company Rantelon is launching its fourth-generation portable counter-drone jammer, designed to address the rapidly evolving drone threat in law enforcement, internal security and critical infrastructure protection. The new device can counter not only drones operating on commonly used frequencies, but also low-frequency drones, the use of which has grown rapidly in modern conflicts.

“The drone threat is evolving very quickly, and countermeasures must keep pace. In developing the new device, we focused on ensuring that it covers key frequency bands while remaining intuitive to use and reliable in the field,” said Karl Taklaja, CEO of Rantelon.

The new drone jamming gun model, PJ-4058, reflects the rapid development of Estonia’s defence industry in a field where technological requirements can change within months. The device has been developed in cooperation with practitioners in the field and builds on Rantelon’s nearly 30 years of experience in developing radio-frequency systems, as well as a decade of counter-drone expertise. It can be used, for example, in police and border guard operations, in the defence sector, and at major events or near critical infrastructure where people, airspace and strategic sites need to be protected against drone threats.

The device is designed to counter drones operating on both commonly used and lower control frequencies. “This is becoming an increasingly important capability, as the use of FPV drones operating on lower control signals has grown significantly on the battlefield in Ukraine, for example,” Taklaja explained. The device’s flexible architecture allows frequency modules to be replaced when needed, enabling counter-drone capabilities to be updated without replacing the entire system.

The counter-drone device is equipped with special reflected-wave protection, known as VSWR protection, which helps prevent damage to the device and supports reliability even if the antenna is physically damaged. Rantelon’s engineers have also placed strong emphasis on signal purity, ensuring that the generated interference remains within permitted frequency bands and does not affect adjacent frequencies.

Rantelon’s previous-generation counter-drone devices have been tested internationally, and their capabilities have also been put to the test in real combat conditions in the Middle East and Ukraine.

Founded in 1995, Rantelon is an Estonian high-technology company that develops and manufactures radio-frequency electronic devices and systems. The company’s product portfolio includes drone detection and counter-drone solutions, electronic warfare systems and other RF-based solutions used both in Estonia and in international markets.