JRC JLR-7900 GPS Navigator | Marine GPS Navigation System | SM MARINE SERVICE™
JRC JLR-7900 GPS NAVIGATOR
Manufacturer Information
Manufacturer: Japan Radio Co., Ltd.
Country of Origin: Japan
Equipment Type: Marine GPS Navigator
Application: Vessel Positioning & Navigation
Product Introduction
The JRC JLR-7900 GPS Navigator is a professional marine positioning system designed to provide highly accurate vessel location information using Global Positioning System (GPS) technology.
This navigation system continuously receives satellite signals and calculates precise vessel position, speed, course, and navigational data required for safe marine operations.
The JLR-7900 has been widely installed onboard commercial vessels and remains a trusted GPS navigation solution for marine professionals worldwide.
The system is commonly used onboard:
- Cargo Ships
- Container Vessels
- Bulk Carriers
- Oil Tankers
- Chemical Tankers
- Offshore Support Vessels
- Passenger Ships
- Fishing Vessels
What Is JRC JLR-7900 GPS Navigator?
The JLR-7900 is a marine GPS navigation system that receives signals from GPS satellites and calculates real-time vessel positioning data.
The system provides:
- Latitude & Longitude Position
- Course Over Ground (COG)
- Speed Over Ground (SOG)
- UTC Time Information
- Waypoint Navigation
- Route Monitoring
- Navigation Data Output
The GPS navigator supplies essential position information to bridge navigation systems and is a critical component of modern vessel navigation.
Main Features
High Accuracy Positioning
The system provides precise vessel position information using GPS satellite technology.
Continuous Navigation Monitoring
Real-time position, speed, and course information are continuously displayed.
User-Friendly Display
Easy-to-read display screen designed for marine bridge operations.
GPS Antenna Integration
Dedicated marine GPS antenna ensures reliable satellite signal reception.
NMEA Data Output
Supports communication with:
- ECDIS
- Radar
- AIS
- Autopilot
- Voyage Data Recorder (VDR)
Reliable Marine Performance
Designed for long-term operation under demanding marine conditions.
Main Components
1. GPS Display Unit
Displays position, speed, course, and navigation information.
2. GPS Antenna
Receives GPS satellite signals for accurate vessel positioning.
3. Processor Module
Calculates navigation data from received satellite signals.
4. Power Supply Circuit
Provides stable operating power to the system.
5. Communication Interface
Transfers navigation data to other bridge systems.
Applications
The JRC JLR-7900 is used for:
- Vessel Positioning
- Route Navigation
- Coastal Navigation
- Ocean Navigation
- Harbor Approach
- Waypoint Monitoring
- Navigation Data Distribution
The system is especially important for vessels operating in congested waterways and long-distance voyages.
Importance of GPS Navigation Onboard Ships
GPS navigation systems have become essential equipment onboard modern vessels.
Without accurate GPS positioning:
- Navigation Accuracy Decreases
- Route Monitoring Becomes Difficult
- ECDIS Position Updates May Fail
- AIS Position Information May Be Incorrect
- Voyage Planning Becomes Less Efficient
The JLR-7900 helps navigators maintain accurate situational awareness and safe vessel operation.
Common Problems & Troubleshooting
No GPS Fix
Possible Causes:
- Antenna Failure
- Poor Satellite Reception
- Damaged Antenna Cable
Solution:
- Inspect Antenna
- Check Antenna Cable
- Verify Satellite Reception
Position Error
Possible Causes:
- Signal Interference
- Antenna Obstruction
- Configuration Issue
Solution:
- Verify Antenna Location
- Check GPS Settings
- Inspect Signal Quality
No Data Output
Possible Causes:
- Communication Failure
- NMEA Output Configuration Error
- Interface Board Problem
Solution:
- Verify NMEA Settings
- Check Interface Connections
- Test Communication Ports
Display Failure
Possible Causes:
- Power Supply Problem
- Internal Circuit Fault
- Display Unit Failure
Solution:
- Check Power Input
- Verify Fuse Condition
- Inspect Display Unit
Maintenance Tips
Marine engineers should regularly inspect:
- GPS Antenna Condition
- Cable Connections
- Power Supply Voltage
- Communication Ports
- Alarm Messages
- Display Functions
- Navigation Accuracy
Proper maintenance improves:
- Position Accuracy
- Navigation Safety
- Equipment Reliability
- System Lifespan
Why Ships Still Use JRC GPS Navigators
Many vessels continue using JRC GPS systems because of:
- Proven Reliability
- Accurate Positioning
- Easy Operation
- Long Service Life
- Marine Industry Reputation
- Worldwide Technical Support
JRC remains one of the most respected names in marine navigation equipment.
Frequently Asked Questions (FAQ)
What is the function of the JLR-7900?
The JLR-7900 provides accurate GPS position, speed, course, and navigation information for vessels.
Can the system interface with ECDIS?
Yes. The system can provide navigation data to ECDIS, AIS, radar, VDR, and autopilot systems.
Does the JLR-7900 require a GPS antenna?
Yes. A dedicated GPS antenna is required for satellite signal reception.
Is the system suitable for commercial vessels?
Yes. The JLR-7900 is widely used onboard commercial ships worldwide.
Do you supply refurbished units?
Yes. SM MARINE SERVICE™ can supply new, used, refurbished, and reconditioned units depending on stock availability.
Short Product Description
The JRC JLR-7900 GPS Navigator is a professional marine positioning system designed to provide accurate GPS navigation information for commercial vessels. It delivers real-time position, speed, course, and navigation data to support safe and efficient vessel operations.
SM MARINE SERVICE™
Marine Automation & Navigation Equipment Supplier
Available Condition
• New Equipment
• Used Equipment
• Refurbished Equipment
• Reconditioned Equipment
Stock Location
• Bangladesh
• China
Services
• Worldwide Shipping
• Technical Support
• Spare Parts Supply
• Marine Equipment Sourcing
Contact Information
SM MARINE SERVICE™
Samir Market, DT Road, Pahartali, beside CDA Market, Chattogram, Bangladesh
Mobile / WhatsApp / Viber: +88 01818 929292
Email: info@smmarineservice.com
Website: www.smmarineservice.com