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Altimeter Question



 
 
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  #1  
Old April 17th 08, 03:58 PM posted to rec.aviation.piloting,rec.aviation.student
WingFlaps
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Posts: 621
Default Altimeter Question

On Apr 18, 1:53*am, Stefan wrote:
WingFlaps schrieb:

QNH means query Newquay Harbour which was the British reference for
sea level.
It should give the atmospheric pressure at that dtaum -but I doubt


You certainly can cite a source for this urban legend?


Urban legend? O, it was not Newquay but Newlyn (both in cornwall). The
datum is sea level as set the British Admiralty back then so the
obvious Q code would have been QNH. Look up the history of the naval
tidal observatory if you don't believe it.

Cheers
  #2  
Old April 18th 08, 01:59 PM posted to rec.aviation.piloting,rec.aviation.student
Jay Maynard
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Posts: 521
Default Altimeter Question

On 2008-04-17, WingFlaps wrote:
Urban legend? O, it was not Newquay but Newlyn (both in cornwall). The
datum is sea level as set the British Admiralty back then so the
obvious Q code would have been QNH. Look up the history of the naval
tidal observatory if you don't believe it.


Source, please. The Q codes are just as Stefan said: randomly assigned.
They were chosen that way so as not to conflict with any nation's callsign
blocks (to this day, there are no callsigns assigned with Q as the first
letter). The apparent relationship between QNH and Newlyn Harbor is purely
coincidental.
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