Owning a GPS jammer is in itself not illegal, but using the devices to interfere with signals is a crime, according to the Southeastern Finland Police Department.
They broadcast a powerful radio signal on the GPS frequency. You might have to be within 10 feet for it to completely drown out the real GPS frequency, but the waves don’t stop they just spread out and get “thinner” with distance. If it completely blocks the signal at 10 feet, it will severely reduce accuracy further out than that. Likely everyone within line of sight of your car will lose accuracy on their GPS.
And that would include airplanes, line of sight is a really long distance up above your car. Airplanes use GPS for critical functions including making sure they don’t crash into the ground when they’re flying through clouds / rain / fog so you could potentially cause serious problems. Most likely force the airplane to land in a different city — because they will not land if their altitude equipment isn’t working… yes they have other ways of measuring altitude but all of them are unreliable, which is why they have GPS. You’re taking away one layer of their patchwork system of landing safely and if too many layers are gone then they abandon the landing and fly elsewhere - happened to a friend of mine recently, turned a quick 2 hour flight home into an 18 hour trip.
It doesn’t work like that.
They broadcast a powerful radio signal on the GPS frequency. You might have to be within 10 feet for it to completely drown out the real GPS frequency, but the waves don’t stop they just spread out and get “thinner” with distance. If it completely blocks the signal at 10 feet, it will severely reduce accuracy further out than that. Likely everyone within line of sight of your car will lose accuracy on their GPS.
And that would include airplanes, line of sight is a really long distance up above your car. Airplanes use GPS for critical functions including making sure they don’t crash into the ground when they’re flying through clouds / rain / fog so you could potentially cause serious problems. Most likely force the airplane to land in a different city — because they will not land if their altitude equipment isn’t working… yes they have other ways of measuring altitude but all of them are unreliable, which is why they have GPS. You’re taking away one layer of their patchwork system of landing safely and if too many layers are gone then they abandon the landing and fly elsewhere - happened to a friend of mine recently, turned a quick 2 hour flight home into an 18 hour trip.