[time-nuts] GPS altitude somewhat wrong?

Gary E. Miller gem at rellim.com
Wed Jun 8 18:24:26 EDT 2016

Yo David!

On Wed, 8 Jun 2016 20:33:58 +0000
"Van Horn, David" <david.vanhorn at backcountryaccess.com> wrote:

> I suppose 214' isn't that outrageous, but it does bring me to a
> question:

Looking at my GPS farm, fair but not great skyview.

A Garmin 18x reports:
    Altitude Err:    +/- 264 ft   

A u-blox 8:
    Altitude Err:    +/- 36 ft         

And an adafruit HAT (u-blox 6?:
    Altitude Err:    +/- 69 ft 

On a Skytraq I have seen +/- 12 feet.

> How accurate is the altitude number really?

Depends.  :-)

Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
	gem at rellim.com  Tel:+1 541 382 8588
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