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Surprise, you can transmit a signal similar to that of a radio transmitter by also being a radio transmitter. Just wait to be tracked down extremely promptly b
by tedchs 14y ago
Surprise, you can transmit a signal similar to that of a radio transmitter by also being a radio transmitter. Just wait to be tracked down extremely promptly by the FCC, or almost worse, a roving band of Amateur Radio engineers with a van full of direction-finding antennas and a high level of passion for enforcement who will come nail you to a tree for firing this thing up.
- alanctgardner2 14y agoThe serious problem with some of these devices is that they're effectively bricked by having received an invalid signal once. You don't have to sit nearby to cause this effect, you could drive across the country putting out 30 mile radius bursts of bad GPS signals, and kill a not insignificant portion of the nation's infrastructure.
- toomuchtodo 14y agoDrive? All you have to do is put it in a Pelican case, mark it as "video equipment", and ship it on a cross country flight in the cargo hold. GPS receivers are already designed for signals from satellites; picking up something transmitted every 10-60 seconds from 6 miles up is going to be easy. Good luck tracking that signal down.
- michaelt 14y agoSeveral of the attacks mentioned in the linked paper mess with data that receivers write to nonvolatile memory and reload when they turn on. As such you do not have to transmit continuously; some vulnerable receivers only need a brief transmission of corrupt data and they get stuck in reboot loops. Needless to say, transmitters that only transmit for a few minutes a day are very difficult to locate manually compared to jammers that operate continuously.