Around Bakhmut, Ukrainian soldiers found their Starlink terminals failing at the worst moments. Colonel Pavlo Palisa put it bluntly: the “enemy is using jamming really successfully.” The suspected cause was a Russian electronic warfare system called Tobol.
Leaked Pentagon documents, reported in April 2023, showed that Russia’s military had been looking into ways to disrupt Starlink in Ukraine since September 2022. The tool at the center of that effort was Tobol-1, a stationary system, according to the Austrian outlet futurezone. Tobol was built as a shield. Its job was to spot attempts to jam Russian satellites, study the interference and send back counter-signals.
An attack on the terminal, not the satellite
Analysts think that defensive design can be turned around. The Secure World Foundation has identified at least seven Tobol complexes in Russia, placed near satellite tracking facilities, Eurasian Times reported. The model known as 14Ts227 was first identified in 2020.
Starlink’s satellite links proved hard to hit. Ukrainian journalist Konstantin Ryzhenko argued that the weak point lay elsewhere. “While Starlink appears to be immune to EW at satellite frequencies, it has GPS in its structure, which is unfortunately vulnerable to electronic interference,” he said. Without a GPS fix, a terminal cannot register. One that has already registered slows down until the connection drops.
Researcher Bart Hendrickx reached a similar conclusion, describing the Tobol approach as downlink jamming, aimed at signals traveling from satellites to ground terminals. Uplink jamming, by contrast, targets signals sent up to the satellites and would hit every user at once.
Why it mattered to the war
Ukraine leaned on Starlink for far more than web access. Futurezone listed hospitals, civilian communications, front-line coordination and the control of reconnaissance drones, many of which carry explosives. Knocking out that link was an obvious goal for Moscow.
The Pentagon papers suggested a test that should have run 25 days, though the classified assessment was not finished until five months later. Futurezone said the delay raised questions about what went wrong. Russia was also reported to have fielded Tirada-2S jamming equipment, with unclear results.
Open details about Tobol remain thin. The system’s chief designer, Vladimir M Vatutin, filed a 2013 dissertation describing a platform that can monitor navigation satellite signals and work out their modulation “with 90% accuracy at a signal-to-noise ratio of 30 decibels.” Analysts quoted by Eurasian Times found “only faint hints and disclosures publicly available about the Tobol program.”
SpaceX president Gwynne Shotwell once said Starlink “was never intended to be employed as a weapon.” In Ukraine it became a target anyway.
Sources
- Russia's TOBOL EW System "Cuts Off" Starlink From Its Ground Terminals
- Wie Russland Starlink-Satelliten über der Ukraine stört (How Russia Disrupts Starlink Satellites Over Ukraine), futurezone.at
