Message posted by Tom on December 22, 2006 at 6:23:59 PST:
I think you are confusing the WAAS system with pure Differential GPS (DGPS). With DGPS the receiver has to pick up both the GPS satellites and the ground-based differential correction signal. With WAAS, a series of ground based reference stations note the difference between their real locations and what's reported by GPS. This difference (or correction) is then uploaded to the WAAS satellite. Your handheld unit picks up that WAAS signal and depending upon where you are in relation to the nearest ground reference station, applies a correction. So as long as you have a decent view of the sky, and can see the WAAS satellite (geostationary, to the southeast) you are in business. Tikaboo should be fine.
In Reply to: WAAS reception on the Tikaboo hike posted by lone wolf on December 21, 2006 at 20:02:30 PST:
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