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Ursprungligen postat av
Burros
Samtalet eller mobilerna?

Samtalet är enkelt för det pågick i 18 min så det är bara att följa tidslinjen för planet. Testa mobilerna 2003 i USA var det japanerna som gjorde:
https://www.youtube.com/watch?v=O1GCeuSr3Mk 1:40.24 in.
I videoklippet du länkar till sägs det att testerna utfördes i Ontario, Kanada. Man kan även se AK Dewdney i videoklippet vid det här tillfället. Det verkar alltså vara hans studie du använder som källa för dina påståenden. Han utförde sitt experiment över den folktäta staden London, Otario vilket bidrog till mera störningar. De kapade planen flög över landsbygdsområden med mycket mindre störningar. Dewdneys resultat bevisar inte mycket i det här fallet.
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"A less-obvious factor is population density: Towers in urban areas cover as little as one square mile each, while rural towers may cover several hundred square miles. This means passengers in planes traveling over rural areas can stick with a signal for a longer period of time without getting dropped during a high-speed handoff."
Källa: Debunking 9/11 Myths, sida 114 (Popular Mechanics)
Så här säger experter angående höjderna och huruvida det var möjligt att ringa eller inte:
Citat:
While not exactly reliable, cell-phone calls from airplanes were possible in 2001 - even from extremely high altitudes. "Because cell sites have a range of several miles, even at 35,000 feet, that's entirely possible," says Rick Kemper, director of technology and security at the CTIA - The Wireless Association. "It's not very good connection, and it changes a lot, and you end up getting a lot of dropped calls because you're moving through cell sites so fast."
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Paul Guckian, vice president of engineering for cell-phone maker Qualcomm, concurs. "I would say that at the altitude for commerical airliners, around 30,000 or 35,000 feet, [some] phones would still get a signal," he tells Popular Mechanics. "At some point above that - I would estimate in the 50,000-foot range - you would lose the signal." Flight 93 never flew higher than 40,7000 feet.
Källa: Debunking 9/11 Myths, sida 113 (Popular Mechanics)