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Aircraft navigation
Airliners normally use a flux valve, a magnetic sensor mounted out in the wing (to be away from other electrical systems). This sends data to the heading system. But it is really just used to initialize the inertial reference system (IRS). Most modern IRSs are updated with GPS data, including aircraft track once moving.

The cell phone in the airplane problem is hitting multiple cells on the ground. And there is one company now making a device for the airplane that allows you to use your cell phone. This device acts as the cell tower, then talks to it's own ground stations to relay your call.

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Posted by: jimward   Posted on: 08/20/04 You are currently: a Guest | Members login | Terms of Use
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m & M s  venk82 | 08/13/04
Amen brother  RCTKen | 08/20/04
You are wrong  This_is_me | 08/13/04
Try a LADA  voska | 08/13/04
Magnetic Compass...?  etazelaar@... | 08/16/04
Aircraft navigation  jimward | 08/20/04
Wheeeehew I can rest easier now  Squawkbox | 08/13/04
The best place for cell phones while driving...  realitycheck101 | 08/13/04
Wow!  Linux User 147560 | 08/13/04
Article filled with fallacies  kneofyte | 08/13/04
Article filled with fallacies....as is yours  middle of nowhere | 08/16/04
Risk Perception / Aircraft  palmwarrior | 08/13/04
Mobiles cause fires at gas stations.  voska | 08/13/04
The only "fallacies"...  kd5auq | 08/13/04
Questions and Answers  nschank | 08/13/04
Incontrovertible proof  jorwell | 08/16/04
wireless brain fry? Paranoid? Who, me?  nickc@... | 08/16/04
it's the moter  GodPigeon | 08/17/04
Airplane about the only place of peace......  CJMPE | 08/16/04
Rude users  jsanten | 08/16/04
I'd like to keep it that way, thank you.  dstinson_z | 08/16/04
Hospital quibble  madlib | 08/16/04
Check the CFR's  paul@... | 08/16/04
Kiawah Island NC?  dan-o_z | 08/16/04
interference on aircraft  e2b2 | 08/16/04
How many flyers indavertantely left cell on  paul@... | 08/16/04
Sperm count, cell phone link??  shadar | 08/16/04
Aircraft Safety and EM Radiation  Kyot | 08/16/04
marine and aircraft susceptability to cell phone emissions  dickkessler | 08/16/04
A minor bit of anecdotal evidence  normally_just_a_reader | 08/17/04
Shall we let a plane crash first?  tojlw@... | 08/16/04
Question... And Answers...  trader7891 | 08/16/04
Cell Phone Health Risk  okpj | 08/16/04
Airspace noise/radio/EM pollution - no avoidance  mkhor@... | 08/20/04
Thank God for common sense- finally!  Revo | 08/20/04
Bursting the bubble on mobile myths  cwnurse@... | 08/20/04
Scare Tactics for $$$  becksdark | 08/20/04
cell phone radiation  Michael000 | 08/22/04
Links for Wireless Health Risks  roger@... | 02/13/08
The Real Reason  paul_bruford@... | 02/15/08

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