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Chaotic_Lemming t1_j6dublu wrote

A wireless jammer cannot block a wired connection. So if everything was connected with cables the internet would work. Unless they cut that cable somewhere.

Jammers work by transmitting a strong noise signal on the frequency being jammed. The wider the frequency range the more power the jammer needs to overwhelm the signals. Jammers don't actually block the signal, they just overwhelm it. Kind of like if you are talking with a friend standing next to you. In a quiet room you can hear each other just fine. The jammer acts like a loud rock concert. You are still talking, but the other person can't hear you because the surrounding noise is too loud.

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kenda1l OP t1_j6dyink wrote

Glad to know that if I ever have crazy killers in animal masks trying to get me, my best chance is to army crawl with my laptop to the router (pretty sure they'd have to get into our basement to cut the cable, or cut it at the router itself, in which case I'm fucked anyway.) Thank you for the explanation!

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newytag t1_j6flggi wrote

But how does the internet cable get into your basement?

If your area uses underground cables then they might have to dig to cut your internet; it would take time but they wouldn't have to breach your property to do it. But many places use the existing overhead cable infrastructure to deliver internet, which are far easier to cut in an attack scenario. Or they could just attack the local exchange point, it's not as direct but it's nowhere near your house.

And in any case it may be easier to just cut the power. Your laptop or mobile phone have battery power but your modem or router probably don't.

Sleep tight.

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Skusci t1_j6e3rtk wrote

You would be surprised.

Back as a kid I tried to make an FM transmitter and it turned out to be a cable TV jammer instead. Worked at a range of at least 100ft on a 9V battery.

Enough power and that signal will work it's way past the shielding in wired connections. Not nearly as much range though.

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