[pct-l] GPS, distance and speed.

[msaenz at mve-architects.com (Mike Saenz)]

The Garmin E-trex Legend, Venture and Vista are WAAS enabled.
The basic e-trex, Summit and Camo are not.

WAAS allows a far better 3-dimensional triangulation, and therefore much higher accuracy in elevation reports.

My Rhino, which is WAAS enabled, will fluctuate up to 50 feet while I'm moving, but once I stop, it will settle down into the same accuracy as the horizontal (2-D) location report.

I'd recommend spending the extra bucks for a WAAS enabled unit, to anyone considering buying a GPS unit.
M i c h a e l   S a e n z
McLarand Vasquez Emsiek & Partners, Inc.
A r c h i t e c t u r e    P l a n n i n g    I n t e r i o r s
w  w  w  .  m  v  e  -  a  r  c  h  i  t  e  c  t  s  .  c  o  m

 -----Original Message-----
From: 	John Mertes [mailto:jmertes@verizon.net] 
Sent:	Wednesday, April 14, 2004 6:15 PM
To:	PCT Mail List (E-mail)
Cc:	Mike Saenz; adrian.borner@ch.abb.com
Subject:	Re: [pct-l] GPS, distance and speed.

Well, I have two GPS units, one about 7 years old (early Garmin 12XL) 
and a newer Garmin etrek. With either one, I can stand on the beach a 
few feet above sea level and gett elevation ranges from -100 feet (yes 
supossedly below sea level) to about that much or move above. It seems 
in low end consumer units at least, the altitude accuracy is not very good.

John