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Old 10-22-2013
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Re: AIS "extremely vulnerable to hackers"

Originally Posted by SVAuspicious View Post
Yes. Radio direction finding (RDF) is built into Rescue 21. Some USCG small boats and even Towboat/US towboats have RDF capability.

Pseudo-doppler RDF is both state-of-the-art and inexpensive. You can build one yourself for about $300US and use any FM radio for direction finding. It's fun. Some ham radio clubs have radio fox hunts that use a number of different technologies, some quite simple, to good effect.
Funny how those news articles on "hacking" the AIS system choose to leave out these things.

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Formerly posted as "RhythmDoctor"
1998 Catalina 250WK Take Five (at Anchorage Marina, Essington, on the Delaware River)
1991 15' Trophy (Lake Wallenpaupack)
1985 14' Phantom (Lake Wallenpaupack)
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