Im trying to use WAAS on my eTrex Venture/Legend/Vista but Im not able to obtain a differential position. What could be wrong?
A. There are three items to look at: • Ensure that you have enabled the WAAS mode in the System screen of the Main Menu. • Depending on your location, you may not have a good line of sight to the required WAAS satellite which will make signal reception very difficult. • You may not have collected enough information from the WAAS satellite. (See below for details.) Detail: • Please refer to your Owner’s Manual for instructions on enabling the WAAS feature. • There are currently two WAAS satellites that can be received in the United States. One is over the Atlantic Ocean and one is over the Pacific Ocean. The satellites are in a geo-stationary orbit over the equator, so the farther north you are, the greater the difficulty in picking up the signal. These factors put the satellites very close to the visible horizon, allowing the signal to be blocked by terrain or buildings (the WAAS signal is in the same frequency range as the GPS signal and is a line of sight transmission). The best resu
