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Thread: Wow, that's fast!

  1. #41
    cheap custom title JC-S60's Avatar
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    Quote Originally Posted by Matthue
    Mobile phones release massive amounts of EMI when negotiating the cell phone networks. Put your phone about 2M or more from some speakers.. when the phone is doing this you will hear the speakers sound bip-de-de-bip-de-de-bip.. This is the massive EMI being induced on the speakers making the cone magnets in the speakers moving in and out making that noise.

    Mouhahaha

    In fact, try that with a non-connected speaker and you will get nothing.

    It's just the signal picked up by the amplifier, and well, eh, amplified. So the "massive EMI" isn't that massive...at all.

    If it were that badly shielded, I would never get on an airplane

  2. #42
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    Quote Originally Posted by Matthue
    Theres so many disconceptions on this board about GPS and windshields/windscreens, GPS signals dont mind glass at all its metal that will deflect a radio signal and cause a weak signal.
    Just to confirm, you meant misconceptions right? You seem to have a misconception also. Any seperation is a seperation. Some seperations are more detrimental, but even paper is seperation. Just because you can see through it doesn't mean that signals penetrate it as easily as if it was not there.

    Yes, metal is more reflective of RF energy, but even glass reflects RF.

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    Quote Originally Posted by grimor2000
    ehhh, we use GPS in the plane all the time.... but we fly KC-135R's
    Sounds like fun.
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  4. #44
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    Common Courtesy

    really about common courtesy. technologically mobile phone use inflight is not a problem, providers have met with airlines to implement "towers" on plane to overcome the cell switching issue (search verizon and virgin i think).
    200+ converstation (at high volume to overcome the engine drone) would make you wish for just a crying baby.

    Similarly regarding courtesy, gps tracking in flight may make other passeengers very uncomfortable. I would never have an open laptop tracking the plane real time (i avoid getting out of my seat), even reasonable people are scared of terrorism, even if irrational. i see no reason to make other more uncomfortbale, maybe not an issue for "low risk" profiled passengers.

    an issue for wifi too, few airlines are offering it now, but it scares alot of people

  5. #45
    MySQL Error Scouse Monkey's Avatar
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    Quote Originally Posted by JC-S60
    Mouhahaha

    In fact, try that with a non-connected speaker and you will get nothing.

    It's just the signal picked up by the amplifier, and well, eh, amplified. So the "massive EMI" isn't that massive...at all.

    If it were that badly shielded, I would never get on an airplane


    as for GPS use on a plane..it is also more of a terrorism thing. Terrorists could use GPS to decide when to take over a plane or when to detonate a bomb or to find a building to crash into when they have take in over, therefore GPS use is also resticted to keep tabs on this.

  6. #46
    MySQL Error scott_fx's Avatar
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    if cell phones were really a threat, i would hope that they wouldn't let them in the cabin. sounds like a huge risk they're taking. But, i put my life in there hands, so i will obey there rules. (i dont think that cell phones are that much of a threat though)
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  7. #47
    Low Bitrate grimor2000's Avatar
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    Quote Originally Posted by Scouse Monkey


    as for GPS use on a plane..it is also more of a terrorism thing. Terrorists could use GPS to decide when to take over a plane or when to detonate a bomb or to find a building to crash into when they have take in over, therefore GPS use is also resticted to keep tabs on this.
    Terrorists would be more likely to use cell phones and watches than GPS. Most of the time, you can look out the window and see if you are over a target you want to destroy or crash a plane over, if you have control of a plane you already have GPS with the plane. Even in cloud cover, you can guestimate your approximate location based on the flight path, time of departure, and ETA.
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  8. #48
    MySQL Error Scouse Monkey's Avatar
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    Quote Originally Posted by grimor2000
    Terrorists would be more likely to use cell phones and watches than GPS. Most of the time, you can look out the window and see if you are over a target you want to destroy or crash a plane over, if you have control of a plane you already have GPS with the plane. Even in cloud cover, you can guestimate your approximate location based on the flight path, time of departure, and ETA.
    well if you want to blow up a plane in the right place for the whrckage to land on the whitehouse, for example, GPS with a nice "press the red button here" POI would be my choice!

    (probably didnt want to write that...so just to clarify no I dont intend to blow up any planes)

  9. #49
    MySQL Error Scouse Monkey's Avatar
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    oh and some dumb **** terrorist would be more likely to want to use the nice colourful GPS on a PDA with proper locations and areas marked off. Last time I checked aircraft GPS didnt come with street maps!

  10. #50
    Maximum Bitrate DiNASTY's Avatar
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    Not sure if it was mentioned earlier, but Southwest specifically lists "GPS Receivers" in their list of acceptable electronic devices in the back of their in-flight magazine. I tried it with a BU-303 and iG and it worked great. However, try to be discrete about it as you will likely freak out passengers when they see you attaching a small black device to your window.

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