GPSMAP 4xxx or 5xxx series chartplotter that is using a GPS 17 HVS, GPS 17x HVS, or GPS 19x HVS antenna not acquiring satellites | Garmin Customer Support
Gps 19X Hvs Technical Specifications: Garmin International, Inc. 1200 E. 151 Street Olathe, KS 66062 USA | PDF | Global Positioning System | Electronics