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Keyless encounters

  1. Feb 24, 2004 #1

    Ivan Seeking

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    http://www.reviewjournal.com/lvrj_home/2004/Feb-21-Sat-2004/news/23271330.html
     
  2. jcsd
  3. Feb 24, 2004 #2
    I know nothing about how keyless remotes work. What would be the nature of the EM signal that could knock out so many over such a wide area? Would it be affecting the transmitters, the recievers, or both? It's not clear to me if they were just temporarily jammed, or if they were permanently damaged, (as they would be with the EMP from a nuclear blast that one guy threw out as an idea).

    I liked the story, anyway, and appreciated it for being more detailed than most about this kind of thing. Alot of interviews.
     
  4. Feb 25, 2004 #3
    When I was up at school, I'd go grocery shopping at night at a certain superstore. Everytime I went at night, I could neither lock or unlock my car door with my keyless entry unless I had the thing pressed up to my car door and even then it would require constant clicking. It was always under their parking lot lighting system. One night I parked in an area on the outskirts of the store where a group of the parking lights weren't turned on. If I was within about ten feet of my car I could lock and unlock fine. If I was farther than that, I could no longer do that. If I went to the same store during the day, I could unlock my car almost from the store's doorway. I accounted it to EMI from the lights but I would have no idea what would cause a whole city to experience that unless someone was testing an illegal transmitter with the wattage ramped up.
     
  5. Feb 25, 2004 #4
    Interesting story, neutroncount. My first thought is that there would have to have been something wrong with that particular store's lighting system for it to be emitting frequencies in the radio range. The reason I think that, is because if normally operating parking lot lighting systems affected keyless locks it would happen so often that it would be common knowlege.

    It does sound like a "jamming" phenomenom since there was no permanent damage to the key system, and since you could get it to work by pressing the remote right against the lock and clicking.

    -Zooby
     
  6. Mar 8, 2004 #5

    Ivan Seeking

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    http://www.theage.com.au/articles/2004/03/06/1078464695634.html

    Maybe some folks from Area 51 have been in Italy recently...
     
  7. Mar 8, 2004 #6
    Well, that story speaks of the locks as having been "fried". I wonder if that is just an expression he's using or if they were actually permanently damaged?
     
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