tag:blogger.com,1999:blog-17500930.post1818177659577727670..comments2024-03-20T22:57:03.923+00:00Comments on Dean Bubley's Disruptive Wireless: Handsets and interference on planesDean Bubleyhttp://www.blogger.com/profile/05719150957239368264noreply@blogger.comBlogger4125tag:blogger.com,1999:blog-17500930.post-55631635073367072642008-02-25T12:42:00.000+00:002008-02-25T12:42:00.000+00:00Hi Dean,A few years back I had a discussion with a...Hi Dean,<BR/><BR/>A few years back I had a discussion with a senior VP of engineering at Boeing. We were at a CEPT meeting on GSM on aircraft, and this guy was Boeing's chief technical delegate. W had dinner with a bunch of similar aviation-RF geeks, including people from Airbus and the other consortium partners pushing GSMoA. The universal opinion was that mobiles pose absolutely no threat to any aircraft system.<BR/><BR/>Think about it - the systems are shielded/hardened against lightning strike. The amount of RF power in one strike would cover the entire RF spectrum, at power levels beyond the wildest imaginings of the most ardent mobiles-on-planes doomsayer.<BR/><BR/>LORAN / GPS etc work at different frequencies to GSM/3G. That said, the possible permutations of intermodulation products between RF, IF and baseband stages in any electronic devices onboard would be legion. I believe there will always be a worst-case to put for things interfering, so it's in good shielding design and mechanical integrity / redundancy we trust.<BR/><BR/>Cheers,<BR/><BR/>MikeAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-17500930.post-56466065236950839632008-02-16T01:59:00.000+00:002008-02-16T01:59:00.000+00:00just a s frustrating I could use my GPS chip on So...just a s frustrating I could use my GPS chip on Southwest for 2 years...pilots would kid I had better maps than they did. 2 months ago they banned it. I asked one of the pilots dead heading on a flight and he said the FAA mandated the ban. I checked FAA and they say it is an airline's choice. So I have a letter into SW ops to try and reverse - since this is a receive only chip which via UPS I connect to my laptop...but some of this stuff appears so arbitraryvinnie mirchandanihttps://www.blogger.com/profile/13889014217213955448noreply@blogger.comtag:blogger.com,1999:blog-17500930.post-11351317025388320622008-02-16T01:51:00.000+00:002008-02-16T01:51:00.000+00:00In one flight a pilot came on before take off and ...In one flight a pilot came on before take off and said he knew two phones were still on...I figured he had some form of CellBuster he carried around...vinnie mirchandanihttps://www.blogger.com/profile/13889014217213955448noreply@blogger.comtag:blogger.com,1999:blog-17500930.post-58504290400332762342008-02-15T22:59:00.000+00:002008-02-15T22:59:00.000+00:00yes. had same thing today, but before take off. Al...yes. had same thing today, but before take off. Also in MWC-land en route to Madrid.Julianhttps://www.blogger.com/profile/08939956571863904603noreply@blogger.com