Russian GPS jammer in Kaliningrad disrupts thousands of civilian and military aircraft navigation since Dec 2023, with recent focus on Polish airspace and over 1,600 unique aircraft affected.

The 'Baltic Jammer' is a Russian GPS jamming system located in Kaliningrad that has interfered with navigation systems of at least 11,496 aircraft, including many civilian airliners, since December 2023. Analytical methods involving radio horizon intersection statistics identified the jammer’s most likely location near the central cape of Kaliningrad, where terrain peaks aid signal propagation. In late March 2024, the jammer operated continuously for 47 hours, primarily targeting Polish airspace (Warsaw FIR) while sparing a northwest sector. This persistent jamming drastically affected over 1,600 unique aircraft in that period alone. Since then, jamming intensity has declined considerably over the following week, with only sporadic limited jamming reports, such as beams directed toward Gdansk airport. This persistent GPS disruption poses a threat to safe air navigation in the Baltic region. Multiple analysts and data from platforms like airplanes.live and gpsjam.org collaborate to track and analyze the jammer. The activity is attributed to Russian electronic warfare forces, highlighting ongoing hybrid warfare tactics against NATO airspace.