Garmin 182/182C Owner's Manual

Also see for GPSMAP 182C: Declaration of conformity Declaration of conformity Owner's manual Specifications

Contents

Garmin 182/182C Owner's Manual Manual pdf 47 page image

GPSMAP 182/182C Owner’s Manual 41M AIN MENU > GPS TABWAAS CapabilityThe GPSMAP 182/182C is capable of receiving WAAS (WideArea Augmentation System) satellite signals. WAAS is an FAA(Federal Aviation Administration) funded project to improve theoverall accuracy and integrity of the GPS signal for aviation use,but land/sea based users can also benefit from this system. At thistime, the system is still in the development stage and is not fullyoperational.There are currently two WAAS satellites that can be received inthe U.S.A., one over the Atlantic Ocean and one over the PacificOcean, in a geo-stationary orbit over the equator. Effective useof the WAAS satellite signal may be limited by your geographiclocation in relation to those satellites, now in developmentalservice. WAAS satellite signal reception requires an absoluteclear view of the sky and works best when there are no nearbyobstructions such as buildings and mountains.WAAS satellites are numbered 33 or higher when viewing the skyview on your GPSMAP 182/182C. Initial reception of the WAASsignal can take up to 15-20 minutes, then 1-2 minutes afterwards.When WAAS differential correction has been received for GPSsatellites (numbers 32 or below), a D appears in the signal bar ofthe sky view and 2D or 3D Differential appears in the receiverstatus. To learn more about the WAAS system, its satellite positionsand current state of development, visit the FAA web site(http://gps.faa.gov). Because WAAS requires CPU resources of theGPSMAP 182/182C to search for and track the satellites, you candisable the WAAS feature to improve unit performance if WAASreception is not available in your area. Refer to the “Appendix” formore information.