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#11
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On Fri, 15 Oct 2004 16:58:26 +0100, Tristán White wrote:
Furthermore, will this see the price of onboard phones come down dramatically (it took me a while to come back from the shock when I got my credit card bill back after calling my wife from the Virgin phone in my seat when flying London to Jo'burg in 2001!) Well you should have known the charges before you placed that call on your seats *sat-phone* handset. It's clearly advertized in the in-flight brochures.... Something like $9(US)/min on Virgin.. -- Michael Turner Email (ROT13) |
#12
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"Tristán White" wrote in message
... I've been reading about this in various places, that they have found out that private cellular mobile phones do NOT affect flight controls, that this information is erroneous. Some report has come out. Really? Care to post the URL to some of these reports? This is a very broad statement to say the mobiles never interfers with *ANY* aircrafts! Can provide information as to who tested with what aircrafts? ISTR that it may be safe to use your mobile phones on some Boeing/Air Bus planes provided a pico-cell is fitted so that all mobiles are commanded to transmit at their very lowest power setting (a few milliwatts). Without the pico-cell on board the mobiles will attempt to register with the cells on the ground at a much higher (and probably max) transmit power. This is bad (especially if you have a few hundred mobiles on board the plane which is left on) and could intefere with the navigation system and possibly the fly-by-wire controls. Also assuming the mobiles can "see" a cell on the ground, its transmission can interfere with other mobiles on the gournd due to the frequency reuse in cell planning. Futhermore the GSM system was never design to handoff calls at speeds greater than about 150kph so your call will almost certainly be dropped with in a few seconds! Furthermore, I have also been told that the flight companies have always known it's not dangerous, but that they have PRETENDED that it's dangerous so that people don't use the expensive onboard phones that you get on long-haul flights (International Roaming is cheaper than these rip-off phones). Airliners generally only know what the aircraft manufacturers tells them. Furthermore, will this see the price of onboard phones come down dramatically (it took me a while to come back from the shock when I got my credit card bill back after calling my wife from the Virgin phone in my seat when flying London to Jo'burg in 2001!) You must be very stupid (or very rich or on company expense) to use the on-board Virigin phone at US$9 per minute!!! |
#13
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I think we ought to put Tristian on a plane set to auto pilot with 5
mobiles, one from each UK network. See IF he can make a call on each and how long it lasts IF he can even initiate the call. Hopefully IT will interfere with the controls and the plane will ditch into the Atlantic!! Steve |
#14
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I think we ought to put Tristian on a plane set to auto pilot with 5
mobiles, one from each UK network. See IF he can make a call on each and how long it lasts IF he can even initiate the call. Hopefully IT will interfere with the controls and the plane will ditch into the Atlantic!! Steve |
#15
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"ServiceTech" wrote in message ... [snip] Some pilots still disagree. They claim interferance with certain equipment. As long as they disagree, I don't think they'll lift the ban. *No* pilot I know would allow a phone to be used whilst in flight. If I'm correct, the captain of the aircraft *always* has the final say, and that in my opinion is how it should be. From personal experience, all flights I've been on in the last few years allow phones to be used while the aircraft is on the ground and at the gate with the doors open. Once the doors close and the plane starts taxying, all electronic equipment, including phones, have to go (and stay) off. Once airborne and at cruise altitude, items like laptops are allowed, but *not* phones. Ivor |
#16
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"ServiceTech" wrote in message ... [snip] Some pilots still disagree. They claim interferance with certain equipment. As long as they disagree, I don't think they'll lift the ban. *No* pilot I know would allow a phone to be used whilst in flight. If I'm correct, the captain of the aircraft *always* has the final say, and that in my opinion is how it should be. From personal experience, all flights I've been on in the last few years allow phones to be used while the aircraft is on the ground and at the gate with the doors open. Once the doors close and the plane starts taxying, all electronic equipment, including phones, have to go (and stay) off. Once airborne and at cruise altitude, items like laptops are allowed, but *not* phones. Ivor |
#17
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"Tristán White" wrote in message ... I've been reading about this in various places, that they have found out that private cellular mobile phones do NOT affect flight controls, that this information is erroneous. Some report has come out. Furthermore, I have also been told that the flight companies have always known it's not dangerous, but that they have PRETENDED that it's dangerous so that people don't use the expensive onboard phones that you get on long-haul flights (International Roaming is cheaper than these rip-off phones). err how long did you spend thinking about this exactly????? These 'rip off phones' work at 35,000 feet. A Mobile does not. |
#18
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"Tristán White" wrote in message ... I've been reading about this in various places, that they have found out that private cellular mobile phones do NOT affect flight controls, that this information is erroneous. Some report has come out. Furthermore, I have also been told that the flight companies have always known it's not dangerous, but that they have PRETENDED that it's dangerous so that people don't use the expensive onboard phones that you get on long-haul flights (International Roaming is cheaper than these rip-off phones). err how long did you spend thinking about this exactly????? These 'rip off phones' work at 35,000 feet. A Mobile does not. |
#19
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"Doug" wrote in message
... err how long did you spend thinking about this exactly????? These 'rip off phones' work at 35,000 feet. A Mobile does not. GSM phones are designed to work up to a distance of 35km (double this distance if only every other time-slot is used) so working at 35,000 feet isn't the issue. OTOH, GSM was designed to hand handoffs up to about 150kph and most commercial airliners fly at a much higher speed than this limit. |
#20
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"Doug" wrote in message
... err how long did you spend thinking about this exactly????? These 'rip off phones' work at 35,000 feet. A Mobile does not. GSM phones are designed to work up to a distance of 35km (double this distance if only every other time-slot is used) so working at 35,000 feet isn't the issue. OTOH, GSM was designed to hand handoffs up to about 150kph and most commercial airliners fly at a much higher speed than this limit. |
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