09-25-2013, 03:36 PM | #31 | |
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That said, I doubt my Kindle (wifi off) emits more energy than a wristwatch, hearing aid or pacemaker. A cell phone blasting away on 4G, wifi and Bluetooth frequencies in an automated effort to connect with the mothership may be another matter. Because aircraft systems vary widely, with lots of retrofitting, no one really knows which kinds of devices, in which cabin locations, might cause problems. Hence the application of the precautionary principle. |
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09-26-2013, 09:41 AM | #32 |
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Hmmm, last I checked airplanes fly by cell towers(higher RF output than your phone), Terrestrial TV stations/Transmitters, etc. all the time. I mean there is a whole entire spectrum of electromagnetic radiation out there and last time I checked airplanes fly pretty low when landing/taking off through metro areas full of radio energy of all sorts. It seems that if they were at all prone to difficulties microwave energy from RADAR would prevent takeoff and have 'em dropping like flies on the way in. (Yeah, I know, but that's a whole different frequency range... UH, huh, at much higher power levels and there are wicked harmonics above and below.)
I think most of the crazy was simply because no one could(or would?) conclusively test all items on all aircraft, and systems are constantly being retrofitted and "improved", so why take a chance... In all fairness, the FCC doesn't clear every device -some come in grey market(tablets/PC/gadgets), so the potential for interference in guidance systems and beacons for IFR is there, but honestly I'd be more worried at flying in a plane built by a company that couldn't figure out which systems are most prone to noise and shield them at least as they run through the air body. I'm sure there are other systems on a plane that might be likely to produce as much or more noise than a small battery powered device that isn't necessarily directly coupled into the plane's power systems. Plus I think the power systems they allow passengers to access are totally separate from avionics and command/control systems... or you wouldn't get near an "outlet" without some sort of certification for your devices -probably not even then. My guess is that doubt coupled with no desire to spend money on testing, or to be wrong, with a little "we're in charge" thrown in might have gone a very long way in the past. Toss in a little greed, "you can use our airphone for $7 a minute. Please avail yourself of our back of seat gaming/entertainment system.", and it's not hard to see how some things might be the way they are. Let's be honest, once you're on a plane you're a hostage even if the flight isn't taken over. You'll eat our food -when we let you, drink our beverages -when we let you, stay in your seat, and only use the can -when we let you... They're the cruise ship disasters of the air, or more likely the runway or taxiway in many cases. People have sat onboard for hours without food, drink , or sanitation. Once the Cabbies figure out a way to pull this we're all doomed! Last edited by TechniSol; 09-26-2013 at 04:22 PM. |
09-26-2013, 04:54 PM | #33 | |
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09-27-2013, 04:40 PM | #34 | |
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You might be able to design individual Faraday cages that could be worn in your seat but you can't isolate the passenger cabins from the rest of the aircraft's electrical supply and electronic sensor equipment. As for the fact that planes fly past radars etc., yeah, but not that close (EMF decreases as a function of the square of the distance from the source). Planes are designed to use radar but transmissions are shielded from other components -- same with radio transmissions. Plane engineers design systems to avoid interference with one another, but they don't have crystal balls to know where pax may sit with an ever increasing number of electronic devices with bigger and bigger capacity batteries emitting stronger and stronger signals. |
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09-27-2013, 05:06 PM | #35 | |
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It might take quite a few flight attendants to check each and every device to see if it was approved and actually in airplane mode. Might make flying a bit more expensive and flights a bit longer. I'd rather just keep it off till takeoff, than have to keep it off while every device was checked as it could take a bit longer in many cases. But no one has checked any of my devices to see if they are in airplane mode before boarding. One of my android devices can still receive and transmit while appearing to be off. Still if they want it off, I keep it off. Only polite if for no other reason . Their airplane, their rules. Helen |
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09-27-2013, 05:12 PM | #36 | |
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Helen |
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09-27-2013, 06:15 PM | #37 |
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FAA reportedly okays use of electronics on planes during takeoff and landing
http://www.slashgear.com/faa-reporte...ding-27299372/ |
10-07-2013, 09:31 PM | #38 |
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I was just on a plane Sat. and they said anything with an on and off switch needed to be turned off and put away.
I'll be glad when this happens. I've been told to put my reader away a few times in the past. I have a Sony reader so no wifi. I fly at least once a year to see family. |
10-08-2013, 08:22 AM | #39 | |
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10-11-2013, 04:03 AM | #40 | |
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10-11-2013, 09:23 AM | #41 |
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