JRC Marine Radar Systems
Japan Radio Co., Ltd. (JRC)
New product
JRC Marine Radar Systems | Complete Guide to JMA-3300, JMA-5300 Mk2, JMA-7100, JMA-9100 Marine Radar Models, Spare Parts & Technical Support.
Japan Radio Co., Ltd. (JRC)
Country of Origin
Japan
Product Category
Marine Navigation Radar
Applications
Commercial Ships, Tankers, LNG Carriers, Container Ships, Offshore Vessels, Naval Ships, Passenger Vessels, Fishing Fleets
For decades, JRC Marine Radar Systems have been among the most trusted navigation solutions installed on commercial vessels worldwide. From small coastal cargo vessels to large LNG carriers and ocean-going container ships, JRC radar technology provides reliable target detection, collision avoidance, shoreline monitoring, and safe navigation in all weather conditions.
Today, thousands of vessels continue to operate with JRC radar equipment because of its outstanding reliability, long operational life, and worldwide availability of spare parts and technical support.
SM MARINE SERVICE™ supplies New, Used, and Reconditioned JRC Marine Radar equipment, including display units, scanner units, antenna motors, magnetrons, gearboxes, processors, keyboards, trackballs, interface boards, and many other spare parts.
JRC has continuously developed radar technology over several generations. Although each generation introduces improved processing, display resolution, networking, and target tracking capabilities, the basic operating principles remain consistent across the product family.
The major product families include:
Each series supports different vessel sizes, operational requirements, and bridge configurations while maintaining compatibility with modern navigation equipment such as ECDIS, AIS, GPS, Gyro Compass, Voyage Data Recorder (VDR), and Integrated Bridge Systems (IBS).
The JMA-3300 Series remains one of the most widely installed marine radar families in the global merchant fleet. These systems are known for their robust hardware, dependable ARPA functionality, and straightforward maintenance.
Common models include:
The series supports both X-Band and S-Band scanner configurations depending on vessel requirements.
The JRC JMA-5300 Mk2 Series represents one of the most successful radar platforms developed by Japan Radio Co. It was designed to provide improved target acquisition, enhanced ARPA processing, high-resolution radar imaging, and seamless integration with modern bridge navigation systems.
Compared with earlier radar generations, the JMA-5300 Mk2 series offers faster processing, improved clutter suppression, advanced networking, and simplified maintenance, making it a preferred choice for merchant vessels operating worldwide.
The series supports radar networking with ECDIS, AIS, GPS, Gyro Compass, Voyage Data Recorder (VDR), BNWAS, and Integrated Bridge Systems.
The JMA-7100 Series introduced a new generation of digital radar technology featuring improved target tracking algorithms, superior echo processing, and enhanced user interface capabilities.
These systems are commonly installed on:
Major improvements include:
The JMA-9100 Series is one of JRC's modern IMO-compliant radar solutions developed for demanding commercial marine operations.
It supports:
Typical vessels include:
| Feature | X-Band Radar | S-Band Radar |
|---|---|---|
| Frequency | Higher | Lower |
| Short Range Target Detection | Excellent | Good |
| Long Range Detection | Good | Excellent |
| Rain Performance | Moderate | Excellent |
| Small Target Detection | Excellent | Moderate |
| Harbour Navigation | Excellent | Good |
| Open Ocean Navigation | Good | Excellent |
Many SOLAS vessels carry both X-Band and S-Band radar systems to maximize safety under varying environmental conditions.
The radar display unit serves as the operator interface where officers monitor surrounding traffic, navigation hazards, weather echoes, and ARPA targets.
Major functions include:
Display units are available in different screen sizes depending on vessel class and bridge layout.
The scanner unit contains the rotating antenna assembly responsible for transmitting and receiving microwave radar signals.
Major components include:
Regular inspection of the scanner unit significantly improves radar reliability and service life.
The signal processor is the computational core of the radar system.
Its functions include:
Modern processors use high-speed digital signal processing (DSP) technology to produce clearer radar images.
One of the most valuable functions of modern JRC radar systems is ARPA.
ARPA automatically:
This functionality greatly assists bridge officers in collision avoidance and safe navigation.
JRC radar systems integrate directly with onboard AIS transponders.
Benefits include:
Modern JRC radar systems provide:
JRC Marine Radar systems are widely installed on:
They are essential for safe navigation during restricted visibility, congested waterways, coastal navigation, harbor approaches, offshore operations, and open-ocean voyages.
One of the greatest advantages of JRC Marine Radar systems is the long-term availability of spare parts. Even radar systems installed decades ago remain operational because many replacement components are still available through authorized suppliers and specialized marine service companies.
SM MARINE SERVICE™ supplies New, Used, and Reconditioned JRC Marine Radar spare parts for various radar generations.
Like all marine electronics, radar systems require periodic maintenance. Typical issues include:
| Problem | Possible Cause | Recommended Action |
|---|---|---|
| No Power | Power supply failure | Inspect AC/DC input, fuse, PSU |
| Scanner Not Rotating | Motor or gearbox fault | Check motor, gearbox, encoder |
| Weak Target Echo | Magnetron aging | Replace magnetron |
| No Target Display | RF receiver fault | Inspect receiver module |
| Incorrect Heading | Gyro signal loss | Verify gyro interface |
| AIS Targets Missing | Communication failure | Check AIS connection |
| ARPA Not Tracking | Sensor input error | Verify speed and heading data |
| Network Failure | LAN board issue | Check Ethernet interface |
| Overheating Alarm | Cooling fan failure | Replace cooling fan |
Routine maintenance significantly extends radar service life.
Recommended maintenance includes:
A professional marine navigation radar system designed for commercial and offshore vessels.
X-Band provides better short-range target definition, while S-Band offers superior long-range performance and rain penetration.
Yes, most modern JRC radar systems support ECDIS integration.
Yes.
Yes.
Yes.
Typically several thousand operating hours, depending on usage.
Yes.
Professionally tested and calibrated reconditioned systems are widely used in commercial shipping.
Yes.
Yes.
Yes.
Yes.
Yes.
Yes, depending on vessel location and service availability.
Yes.
Yes, technical documentation is available for many models.
Yes.
Yes.
Yes, subject to availability.
This master guide covers a wide range of JRC Marine Radar models used on commercial ships, offshore vessels, tankers, container ships, passenger ships, and fishing vessels.
JMA-3110, JMA-3110-6, JMA-3120, JMA-3210, JMA-3210-6, JMA-3220, JMA-3300, JMA-3310, JMA-3310-4, JMA-3310-6, JMA-3320, JMA-3332, JMA-3334, JMA-3336, JMA-3340, JMA-3340-4, JMA-3340-6, JMA-3400, JMA-3500, JMA-3900, JMA-5000, JMA-5100, JMA-5200, JMA-5300, JMA-5300 Mk2, JMA-5310, JMA-5312, JMA-5312-4, JMA-5312-6, JMA-5320, JMA-5322, JMA-5322-7, JMA-5322-9, JMA-5332, JMA-5332-12, JMA-5400, JMA-5500, JMA-6000, JMA-6100, JMA-6200, JMA-7100, JMA-7100-4, JMA-7100-6, JMA-7100-7, JMA-7200, JMA-7300, JMA-7400, JMA-7500, JMA-7600, JMA-7700, JMA-8000, JMA-9000, JMA-9100, JMA-9100 Series, JMA-9122, JMA-9132, JMA-9142, JMA-9152.
This blog also covers a wide range of JRC radar spare parts, including Radar Display, LCD Monitor, Scanner Unit, Antenna Unit, Scanner Motor, Gearbox, Magnetron, Waveguide, Receiver Module, RF Board, CPU Board, Signal Processor Board, Power Supply Unit, Interface Board, Keyboard, Trackball, Encoder, Slip Ring, Rotary Joint, Bearing Kit, Cooling Fan, Ethernet Board, Communication Board, AIS Interface, GPS Interface, Gyro Interface, LAN Board, Radar Scanner, Radar Antenna, Radar Processor, Radar Control Unit, Radar Display PCB, Radar Repair Parts, Radar Calibration Parts, Marine Radar Spare Parts, Marine Radar Replacement Parts, Marine Navigation Spare Parts, JRC Radar Manual, Installation Manual, Operation Manual, Service Manual, Maintenance Manual, Troubleshooting Guide, Calibration Guide, and Technical Support.
SM MARINE SERVICE™ supplies New, Used, and Reconditioned JRC Marine Radar Systems together with genuine and replacement spare parts. Our inventory includes complete radar systems, display units, scanner units, antenna motors, gearboxes, magnetrons, processor boards, interface modules, power supplies, keyboards, trackballs, and many obsolete components for older JRC radar models. We provide worldwide sourcing, repair, calibration, technical support, and fast delivery from our Bangladesh office and Shanghai warehouse.
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