[pct-l] pct-l] Follow-up to the earlier GPS discussion

[Herb]

Linda-

Thanks for that insight, as it clears up a mystery for me. Last year I and a buddy were hiking in the Grand Canyon trying to find "overhang" campsite in upper Phantom. I had the location's waypoints and my GPS indicated it was .2 mile up canyon. But after hiking nearly 1/4 mile I checked again, and it showed the site about .2 mile behind us. Upon later exploration we found the site--it was 100 feet from the FIRST reading telling us to head up canyon 1/4 mile. I thought to myself 'what an idiot, can't even read a GPS right.' Maybe it wasn't me after all.

Herb

---- "linda.hungerford" <linda.hungerford at comcast.net> wrote: 
> In a canyon, where the signal to the GPS is bouncing around off of walls, 
> your signal could be off by a quarter mile, or more.  (My track from the 
> Rogue River last week has me repeatedly crossing the river to jog several 
> thousand feet up the opposite canyon's walls.)  Or you could just lose the 
> satellite signal entirely.  Better to know how to use the GPS and the map 
> and compass, and figure out when to believe neither.
> 
> Linda
>