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Disruptions: How the F.A.A., Finally, Caught Up to an Always-On Society
“Fliers Must Turn Off Devices, but It’s Not Clear Why.” Within minutes, the e-mails questioning the ban on electronics during takeoffs and landings started pouring into my in-box. The column received 257 comments and was shared thousands of times on social media. (bits.blogs.nytimes.com) Ещё...Sort type: [Top] [Newest]
I've heard -and it sounds quite logic- that it's not the avionics being jammed by RF from a mobile device. The real issue is that cell phone towers have problems when a plane with +200 devices is flying over them at 200 knots. That causes the network to switch ('handover') the terminals from one tower to another in a short time, causing serious trouble to the operators. However, as this explanation would not be convincing enough to the public, they have to lie a little...
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Peter,
I believe they were saying that for pilots of "Smaller Craft" it is acceptable for the pilot to use Ipads and such for their cahrts, approach plates, weather, etc... I'd fully read what is writen before snapping back at others!
I believe they were saying that for pilots of "Smaller Craft" it is acceptable for the pilot to use Ipads and such for their cahrts, approach plates, weather, etc... I'd fully read what is writen before snapping back at others!
Your experiments notwithstanding, there are other paths to the communications systems other than the antennas. The rules requiring electronic devices to be turned off are a bit over broad at first glance, but the real danger comes from any device with a local oscillator. Every microprocessor has an oscillator. This is the reason for the turning off devices.
RF radiation is of course a physical science, but there is a lot of art to the practice of designing circuits to exploit the phenomena.
Heterodyning is not straight restaurant in West Hollywood, but a physical process of two frequencies that combine in the air to form a third frequency. You have all experienced this when you hear a voice on your COMM that is clearly not on the channel you are monitoring. This is what could cause interference with systems on the aircraft. At altitude it is not a serious problem. Take off and landing it is a problem. The number of local oscillators is also a problem. More radiation is more likely to heterodyne than less. An A380 full of yack slabs (cell phones) is a greater danger because of this effect than you up in a Piper Cub with an iPhone in your pocket.
RF radiation is of course a physical science, but there is a lot of art to the practice of designing circuits to exploit the phenomena.
Heterodyning is not straight restaurant in West Hollywood, but a physical process of two frequencies that combine in the air to form a third frequency. You have all experienced this when you hear a voice on your COMM that is clearly not on the channel you are monitoring. This is what could cause interference with systems on the aircraft. At altitude it is not a serious problem. Take off and landing it is a problem. The number of local oscillators is also a problem. More radiation is more likely to heterodyne than less. An A380 full of yack slabs (cell phones) is a greater danger because of this effect than you up in a Piper Cub with an iPhone in your pocket.
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SOME OF GUYS ON HERE WORKED IN CLASSIFIED PROJECTS SO YOU AIN'T GONNA GET TO KNOW
Unless you have some fancy satellite phone, you will not receive signal on the flight anyway so just pull up your laptop and work offline.
The only remaining argument would be the ability to use the phone while taxing which would be convenient but again for the purpose of the multitude of ADD flies out there that would be reading instead of paying attention to what is going on around them...it is for safety more than interference.
If you can't pause for a brief amount of time (~30-45 minutes) during your flight then bone up and start paying for a private charter where the PIC or certificate holder can authorize such use.