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
Garmin GPS 17X HVS Antenna, For marine, Amit GPS & Navigation LLP | ID: 23204502155
FS: Garmin GPS 17 HVS Antenna (NMEA O183) - The Hull Truth - Boating and Fishing Forum