Not only Poland, they have jammers around St Petersburg as well which affects Finland, there have been reports about boats losing GNSS reception in Swedish wate

Not only Poland, they have jammers around St Petersburg as well which affects Finland, there have been reports about boats losing GNSS reception in Swedish waters, etc. This has been going on for years. Don't worry though, it's been condemned in a sternly worded letter: https://www.icao.int/news/icao-assembly-condemns-gnss-radio-frequency-interference-originating-dprk-and-russian https://www.icao.int/news/icao-assembly-condemns-gnss-radio-...