I don't think it would be as easy as the "hacker" claims. It's been close to 10 years since I worked in radio, but the EAS system was one area I had responsibility for. There are a number of radio stations that are designated as primary stations, and the alerts would start with them, and no single station can trigger the alert across the country. You might get a signal to propagate across a few states, which, while bad, isn't quite as big of a deal as they make out.
Anyone else get the feeling that all of this "hacker" stuff in the media is serving to raise the profile of "hackers" and position them as the new "terrorists" in an effort to create an environment of fear that will lead to support for upcoming Internet regulations?
With a text writeup: <a href="http://abclocal.go.com/kgo/story?section=news/iteam&id=8431876&pt=print" rel="nofollow">http://abclocal.go.com/kgo/story?section=news/iteam&id=8...</a>
Here is the code in the video:<p><a href="http://anonymous-lulzsec.com/entries/encoders/same_enc-same_enc-c" rel="nofollow">http://anonymous-lulzsec.com/entries/encoders/same_enc-same_...</a><p><a href="http://pastebin.com/gT7qErZF" rel="nofollow">http://pastebin.com/gT7qErZF</a>
I also wonder with #spacepunk tech brewing if it's possible to actually overpower a satellites signal. There is someone on kickstarter working on low earth orbit satellites that would stay in orbit for 2 weeks.