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Iran plans permanent break from global internet, say activists
(www.theguardian.com)
This is a most excellent place for technology news and articles.
It takes a lot of juice to jamn radio signals though, the farther away from where you are jambing the harder it becomes as I understand it, an inverse square root.
Do you know how they jamn the satelites?
It was something about base stations needing to know their own precise location. So they messed with the GPS signal.
And it isn't 100% effective, of course.