From: Tom Corrigan (thomas.corrigan@jhuapl.edu)
Date: Thu Jul 18 2002 - 12:32:07 CDT
Hello Donald,
140 feet is very unusual, it should be less than that better
than 99.9% of the time. Check out
http://users.erols.com/dlwilson/gpswaypt.htm
Tom Corrigan
thomas.corrigan@jhuapl.edu
Thursday, July 18, 2002, 12:54:22 PM, you wrote:
>> From: Signe Rogers
>>
>> As others have
>> observed, proper use of a GPS requires being aware of several factors,
>> including the fact that it does not *exactly* pinpoint
>> locations.
>>
DSR> That is for sure. I took several waypoints while I was at PTC last week,
DSR> (Ponil, Pueblito, T-Rex, PTC Dining Hall, etc.). I recorded a waypoint at
DSR> the Urraca trailhead, turned off my GPS to do something before going on the
DSR> trail, turned it back on in the exact same spot I recorded the waypoint and
DSR> it said I was 140 feet from the trailhead. I use a Garmin Etrex, and it
DSR> usually isn't that bad, but it does illustrate how far it can deviate from
DSR> actual points.
DSR> I was planning to compare my waypoints to those published on the lists that
DSR> Seldon has on his webpage. I haven't gotten to it yet, though.
DSR> Regards
DSR> Don Roberts
DSR> ASM T1201
DSR> Fullerton, CA
DSR> Eagle Class of 73
DSR> PTC 2002
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