Ukrinform, the state-owned Ukrainian news agency, reported on a post by an anonymous research account under the pseudonym “Markus Jonsson,” claiming that aircraft have suffered from navigation errors over the southern part of the Baltic Sea since Dec. 15 – and that the source of the jamming appears to be Russia’s Kaliningrad region.
The claims made by the “Markus Jonsson” account on the Mastodon and X social networks have not been independently verified, however, the accounts, which date back to December and January 2022, include near-daily posts with signal and sensor analyses.
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I think I found the location of the Baltic Jammer. In Kaliningrad, Russia.
— auonsson (@auonsson) January 3, 2024
Since Dec 15 aircrafts have suffered from navigation errors over south Baltic Sea, on and off.
By plotting an assumed max jamming-range for each bad position there is one area standing out: Kaliningrad. pic.twitter.com/EgT6mcoZU4
After the fall of the Soviet Union, the Kaliningrad region, a former part of Germany bordered by the Baltic Sea, Lithuania, and Poland – taken by the Soviet Union as a spoil of World War II – was cut off from the rest of Russia.
Russia continues to maintain a military presence in the NATO-surrounded Kaliningrad region, including the Kaliningrad Chkalovsk naval air base.
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