On the “Geran” drones that “visited” Poland yesterday (19 units with extra fuel tanks): some carried Iranian NASIR satnav with 4-element CRP antennas, resistant to radio warfare. This rules out jamming or signal loss. No coincidences.
@vladvlas The drones shown until now from Poland are not Geran drones but Gerbera.
First image is a Gerbera intercepted above Ukraine, second is one of the Gerberas found in Poland. The satnav unit is highlighted in the red square.