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Italy considers hiding state flight paths after jamming of von der Leyen plane
(www.theguardian.com)
this post was submitted on 02 Sep 2025
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Even when someone jams your WiFi you can still use WiFi by switching to a different frequency. I don't know what range of frequencies are available to GPS systems but I'd imagine they're broad enough that one can operate while the other is jammed.
If you want to jam anything you need enough power to produce a strong enough signal to overwhelm the target's receiver. I found the formula that lets you calculate how much power you'd need. In the example on the website the guy is trying to jam a radio 300m away. They need 7 watts to make 1db of noise. The power you need increases exponentially with the distance and with how much noise you want to make. That's why I can easily see this going into the millions of watts when you want to jam the GPS of an aircraft 10+km away.
That's possible for one frequency but as I said, GPS most definitely has several frequencies it operates on so jamming all of them at once might not even be possible with current technology.
Both systems are listening for the same signal though, from the same satellites, on the same frequency.
And you can't control what frequency the satellite transmits at.