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Something is jamming GPS over Europe. Here's what we found
The Signal
Researchers have identified a Russian satellite, Cosmos 2546, as the source of a recurring, continent-scale disruption to GPS signals across Europe. While the precise physical origin of these signal drops is confirmed, the central tension remains whether these transmissions constitute deliberate jamming, capability tests, or covert communication.
The Case
- Researchers led by Todd Humphreys, a navigation expert at the University of Texas at Austin, matched raw radio voltage data from Amsterdam and Trondheim to the orbit of Cosmos 2546 with a 200-meter margin of error.
- The interference, which involves sudden drops in signal-to-noise ratio lasting only 3 to 5 seconds, was rejected as solar or ground-based because of its narrow 5-megahertz band and geometry that requires an altitude of at least 1,200 kilometers.
- Investigators ruled out randomness by observing a distinct weekday and business-hours pattern, suggesting human-involved operation rather than arbitrary satellite hardware failure.
- Attributing the source to Cosmos 2546 remains sensitive because the satellite is part of a broader Russian early-warning constellation; while the raw data matches the 2026 events, it does not definitively account for signals recorded as far back as 2019.
- The intent of the bursts is currently unsettled, as a slight frequency offset from the GPS band leaves open the possibility that these are brief, non-malicious communications or equipment tests rather than active anti-infrastructure jamming.
- The broader concern, supported by anecdotal reports of 1,500 daily flight disruptions, is that society’s deep reliance on satellite navigation makes critical infrastructure uniquely vulnerable to space-based interference.
The 1 Minute Signal Take
This research is a masterclass in forensic radio analysis, successfully moving from a vague signal pattern to a specific orbital suspect. The claim that this is an intentional, continent-scale capability is not yet peer-reviewed but remains highly credible due to the raw data match. Watch the video if you want to see the specific signal-processing methodology—it adds necessary nuance to why a ground-based source was mathematically impossible.
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