Re: RC: GPS and American River

["Nancy Mitts" <mitts_n@hotmail.com>]

Dorothy,
I really don't know much about GPS, I'd like to have one to play with 
though.  Can you get bounce off canyon walls?
What did your watch say? If the GPS was right on with the map for 20 miles, 
and nearly doubled the distance for your last 10, how long did it take you 
to ride it? I'd trust my watch & sense of timing before any gadget.
Nancy Mitts


>From: "Dorothy Joiner" <djoiner@countyofplumas.com>
>To: <Ridecamp@endurance.net>
>Subject: RC:  GPS and American River
>Date: Fri, 12 May 2000 13:13:31 -0700
>
>We rode the 30 mile ride at American River.  Just for fun, we decided to 
>take our GPS and set the odometer mode so that we would know exactly how 
>far we'd traveled.  The GPS and the mileage map were almost exactly the 
>same...until the last 10 miles.  At that point, according to the GPS, we 
>had gone about 2 miles further than where they said that check was 
>(Rattlesnake Bar).  We chocked that up to going off the trail, down to the 
>water, etc.
>
>However, when we got to the end of the ride, our GPS was reading 39 
>miles--not 30.  The folks we talked to there swore up and down that our GPS 
>was wrong.  So we checked it in the odometer mode travelling in the car.  
>Its right on.
>
>Any ideas what would cause a GPS to ADD miles?  I know they can sometimes 
>cut them off if you don't have good sattleite reception--but add??
>
>Dorothy & Elly
>Butterfly Valley

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