KYIV, July 9 — Against this backdrop of grinding artillery duels and trench warfare, a quieter, more invisible battle is being fought across the electromagnetic spectrum. In the corridors of military planning rooms in Kyiv and Moscow, the contest for control of the airwaves has become as decisive as any tank column or infantry assault. Electronic warfare, or EW, involves using the electromagnetic spectrum to disrupt an enemy’s ability to communicate and sense the battlefield.
In the Russo-Ukrainian War, this technological arms race has accelerated at a dizzying pace. Russia has fielded systems like the Krasukha-4, introduced in 2011, and the R-330Zh Zhitel, which has been deployed since 2015.
These are not theoretical weapons; they are active, mobile jammers designed to blind satellite and radio signals upon which modern militaries depend. What is at stake is connectivity. Ukrainian forces rely heavily on commercial systems like Starlink for battlefield internet and on drone control links that operate in specific frequency bands.
The Krasukha-4 and Zhitel systems emit high-power radio frequency interference, effectively overwhelming a receiver with noise so that a genuine signal cannot be decoded. They target the Ku-band, which spans 12 to 18 GHz and is used by Starlink, as well as the 2.4 GHz and 5.8 GHz bands commonly used for drone control.
To counter this, Starlink has employed adaptive beamforming and frequency hopping — techniques designed to dodge jamming by rapidly shifting frequencies or focusing signals in narrow beams. But the source material indicates that Russian systems have reportedly evolved to track these changes. This is the essence of the electronic warfare duel: a constant, cat-and-mouse adaptation where each side’s countermeasure is quickly met by a counter-countermeasure.
The consequences for drone operations are severe. Ukrainian forces have made extensive use of the Turkish-made Bayraktar TB2, first deployed in Ukraine in 2022. These drones rely on satellite links for beyond-line-of-sight control.
When jamming is effective, a drone can lose its connection to its operator, forcing it to abort its mission or, in the worst case, crash. The effectiveness of any electronic warfare system depends on three factors: power, proximity to the target, and frequency agility — the ability to quickly shift between frequencies to find a hole in the enemy’s defenses.
Both sides have invested heavily in this domain. Ukraine has received NATO-standard electronic warfare equipment, a significant upgrade from its Soviet-era legacy systems. Russia, meanwhile, has decades of EW development to draw upon, including systems like the Leer-3, which is based on the Orlan-10 drone and is specifically designed for cellular network jamming.
Understanding the mechanics of electronic warfare is key to grasping the wider picture of this conflict. It is not merely a supporting arm; it is a central pillar of modern combat.
The ability to deny an enemy the use of the electromagnetic spectrum can render their most advanced weapons blind and deaf, while preserving one’s own ability to coordinate, strike, and survive.
The Mechanics of the Invisible Fight
When a Russian Krasukha-4 system locks onto a Starlink terminal or a drone control link, it does not simply block the signal. It floods the specific frequency with so much radio energy that the intended signal becomes indistinguishable from noise. This is jamming in its purest form: a brute-force attack on the physics of radio transmission.
The R-330Zh Zhitel is particularly adept at targeting satellite communications. Deployed since 2015, it has seen extensive use in eastern Ukraine.
Its mobility allows it to be repositioned quickly, making it harder for Ukrainian forces to locate and destroy. The Leer-3, mounted on an Orlan-10 drone, adds a new dimension by bringing the jammer closer to its target, increasing its effectiveness while keeping the operator at a safe distance. Ukrainian forces have not been passive.
The supply of NATO-standard electronic warfare equipment represents a qualitative leap. These systems often incorporate more advanced frequency-hopping algorithms and wider bandwidths, making them harder to jam.
But the Russian systems have reportedly evolved, learning to predict or track the frequency changes that Starlink and drone systems use to evade jamming.
The Drone Equation
The Bayraktar TB2 drone became a symbol of Ukrainian resistance in the early months of the full-scale invasion. Its ability to strike Russian supply convoys and command posts from beyond line of sight was a game-changer. But that capability depends entirely on a stable satellite link.
When Russian electronic warfare systems successfully jam that link, the TB2 becomes a very expensive, unmanned aircraft with no way to complete its mission. The wider picture is that both sides are locked in a technological arms race where the advantage shifts from week to week.
A new firmware update for Starlink might close a jamming vulnerability, only for Russian engineers to find a new frequency to exploit. A Ukrainian drone operator might learn to fly at a lower altitude to stay below the jammer’s effective range, but that exposes the drone to anti-aircraft fire. What to watch next is the continued evolution of this invisible front.
As both sides pour resources into electronic warfare, the conflict in Ukraine is becoming a proving ground for the next generation of EW technology. The lessons learned here — about frequency agility, adaptive beamforming, and the limits of brute-force jamming — will shape military doctrine for decades to come.
For now, the battle for the electromagnetic spectrum continues, silent and unseen, but no less decisive than any clash of armor on the ground.
