GPS/GNSS
critical
Known Models (3)
Furuno Electric (Japan) GP-170 / SC-70 Series
GPS/GLONASS/Galileo/BDS
· Satellite Navigation
Voltage: 12-24V DC
type: GNSS Navigator / Satellite Compass
size_range: ['GP-170', 'SC-70']
variant_count_approx: 2
period_start_year: 2015
period_end_year: None
drive_type: Electric
construction: GNSS receiver, multi-constellation, antenna unit
Common Failures:
- • Antenna cable corrosion from deck exposure
- • Receiver firmware issues requiring updates
- • HDOP/PDOP degradation from antenna obstruction
- • Heading output drift on satellite compass
Service: Antenna cable inspection annually. Firmware update per manufacturer advisory. Position accuracy verification weekly.
Spares: Furuno global. Lead time: 1-2 weeks.
JRC (Japan) JLR-21 GPS Navigator
GPS/GLONASS
· Satellite Navigation
Voltage: 12-24V DC
type: GNSS Navigator
size_range: ['JLR-21']
variant_count_approx: 1
period_start_year: 2015
period_end_year: None
drive_type: Electric
construction: GNSS receiver, dual constellation
Common Failures:
- • Antenna cable corrosion
- • Receiver firmware issues
- • Display failure
Service: Standard GNSS maintenance.
Spares: JRC global. Lead time: 1-3 weeks.
Trimble / Kongsberg (USA/Norway) DGNSS / DGPS Receiver
DGPS/DGNSS
· Satellite Navigation (Differential)
Voltage: 12-24V DC
type: Differential GNSS Receiver
size_range: ['Trimble SPS Series', 'Kongsberg DPS']
variant_count_approx: 2
period_start_year: 2005
period_end_year: None
drive_type: Electric
construction: DGPS receiver with differential correction
Common Failures:
- • Differential correction signal loss
- • Antenna cable issues
- • Receiver hardware failure
Service: Differential correction subscription active. Antenna inspection annually.
Spares: Trimble/Kongsberg. Lead time: 2-4 weeks.