There have been developments in receiving antennas that are harder to jam. Most jamming is horizontal and limited to a few bands. So by having a directional an

There have been developments in receiving antennas that are harder to jam. Most jamming is horizontal and limited to a few bands. So by having a directional antenna and listening to all services for now it seems to work. But this is a cat and mouse game. https://furuno.eu/gr-en/marine-solutions/gnss-positioning-timing-solutions https://furuno.eu/gr-en/marine-solutions/gnss-positioning-ti...