[WWP] GPS Accuracy

From: denis4x4@frontier.net
Date: Wed May 03 2000 - 20:09:59 PDT


When I'm not sailing my P-15 or cruising the drive-ins in my '31 Ford
Speedster, I do a lot of 4-wheeling in the San Juan Mountains. I'm on my
third GPS. It seems that the smaller and cheaper they get, the better the
performance. I have checked highway speeds, rock crawling speed,
direction, topo map locations, etc. and the only thing that is inaccurate is
the altitude readings. I used a $125 handheld unit to find survey sticks for
a mining claim patented in 1906 and the readings were dead nuts. However, I
can be parked right in front of the Lizard Head Pass sign saying that the
altitude is 10,280 and the GPS will bounce from 8,000 feet to 12,000 feet
and there will be no steady reading. My $300 GPS was 10' off the San Diego
#1 entrance buoy and I found Avalon in a peasoup fog. I wonder if they
really will be anymore accurate on the water than they were before. I'll
hit a couple of mountain passes tomorrow to checkout the altitude readings.
If anybody needs the cordinates for the Burger Boy in Cortez, Sonic Drive-In
in Durango or Farmington NM, let me know!

Dennis Pierce
Gypsy Witch V #1207
Durango CO

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