MichaelGibbs(at)cox.net Guest
|
Posted: Wed Mar 15, 2006 9:28 am Post subject: static port location on Series 6 |
|
|
Bradley sez:
Quote: | ...our GPS reading is significantly off from indicated (by a couple
thousand feet). Now that you mention it, I think it is due to
setting 29.92 at 18K'. Hence the GPS would be actual, and the
altimeter would be relative.
|
Michel is right about GPS altitude errors, even with selective
availability turned off. GPS altitude is based on a computer model
of the earth's shape, not your actual distance from the dirt, and can
be off considerably. Long-term testing of a GPS unit at a particular
location will not reveal errors in the earth-model.
Although GPS is a 3-dimensional positioning system, the altitude
component does not have the same accuracy that lateral position has.
Mike G.
N728KF
| - The Matronics Kitfox-List Email Forum - | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Kitfox-List |
|
|
|