110 GPSMAP 392/398/492/498 Owner’s ManualINDEXKkeel offset 79keypad usage 5key beeps 65Llanguage 65license agreement 106LORAN TD 103Mmagnetic variation 67main menu 37main pages 26Man OverBoard 10MapSource 59map datum 66Map Page 27options 30setup map 32map pointer 7, 28map scales 29map tab 61Maritime Mobile Service Identity 97Mark key 5measure distance 31Menu key 5merge from card 59messages 100MMSI 22, 97MOB 10Nnarrow beam 72NAV/MOB Key 5, 12navaids 63navigating 12distress call 24Go To 13position report 24routes 18TracBack 14navigation terms 98NMEA 70north up 62Ooff course alarm 71orientation 62Out Zoom key 5overzoom 29Ppages tab 61Page key 5points tab 46position format 66position reports 22Power key 5power on/off 1proximity waypoints 50QQuit key 5Rreceiving a DSC call 24replace from card 59reviewDSC call 23waypoints 11Rocker key 5routes 17copy 51create 17delete 51delete all 51routes tab 51route review page 52options 53Ssatellite location 95satellite sky view 95scroll speed 80selecting options 6shallow/deep water alarm 71simulator mode 3software update card 65soft bottom 84sonar 72depth line 76understanding 72whiteline 76Sonar Page 74adjustment menu 75sonar tab 64options 79sound waves 72specifications 86speed filter 65split when zoomed 77storage vistrongest sonar returns 73surface clutter 74swap split 77system information 65system tab 65Ttemperature 82temperature graph 77temperature scale 64temperature tab 63thermoclines 83
