Epoznan.pl writes about this.

According to the portal, large and medium-scale violations were observed in the navigation system over the country.

“The failures coincide with the “theoretical range of Russian electronic jamming systems located in the Kaliningrad region,” the material says.

At the beginning of January, the Russian group of forces “West” used the most modern electronic warfare system, providing all-aspect protection from any drones.

It was also reported what new Russian weapons were presented in 2023.