JRC Marine Radar Systems
Japan Radio Co., Ltd. (JRC)
New product
For more than five decades, Japan Radio Co. (JRC) has been one of the world's leading manufacturers of marine navigation equipment. Its radar systems are trusted aboard thousands of merchant vessels, offshore platforms, naval ships, passenger ferries, fishing vessels, and workboats operating across every ocean.
JRC Marine Radar systems are designed to provide reliable target detection, collision avoidance, navigation assistance, coastline monitoring, weather observation, and ARPA target tracking under all weather conditions. Their robust construction, advanced signal processing, and long service life have made them one of the most widely installed radar brands in the global maritime industry.
Whether installed on a container vessel crossing the Pacific or a coastal tug operating in confined waters, JRC radar systems deliver accurate and dependable situational awareness to bridge teams.
SM MARINE SERVICE™ specializes in supplying New, Used, and Professionally Reconditioned JRC Marine Radar systems, spare parts, replacement modules, scanner assemblies, display units, and repair services to customers worldwide.
Over the years, JRC has introduced multiple radar generations to meet evolving IMO performance standards and the operational requirements of commercial shipping.
The major product families include:
The JMA-3300 Series remains one of the most popular radar generations installed on commercial ships. Known for its dependable performance and simple operation, it is still actively supported through spare parts and refurbishment.
Typical models include:
These systems are available in both X-Band and S-Band configurations depending on vessel requirements.
The JMA-5300 Mk2 family introduced significant improvements in target processing, display quality, and ARPA tracking.
Popular models include:
The Mk2 series remains widely installed on container ships, tankers, and bulk carriers.
The JMA-7100 Series represents a newer generation of IMO-compliant radar systems featuring improved digital signal processing, enhanced target tracking, AIS overlay, and network integration.
Common variants include:
Designed for demanding commercial applications, the JMA-9100 Series delivers advanced radar processing, improved bridge integration, and high-performance ARPA capabilities.
Popular models include:
One of the most common questions from marine engineers and navigation officers is the difference between X-Band and S-Band radar systems. Although both perform the same fundamental task—detecting targets and assisting safe navigation—they are optimized for different operating conditions.
The X-Band radar operates at a higher frequency and produces excellent target resolution, making it ideal for detecting:
Because of its higher resolution, X-Band radar is generally preferred for coastal navigation and pilotage.
Popular JRC X-Band Models include:
S-Band radar uses a lower operating frequency, allowing it to penetrate rain, heavy weather, sea clutter, and dense fog more effectively.
It performs exceptionally well during:
Most SOLAS vessels carry both X-Band and S-Band radar to ensure redundancy and optimal performance under varying weather conditions.
The display unit is the operator's primary interface with the radar system. Modern JRC radar displays feature high-resolution LCD screens, advanced graphical processing, and intuitive controls for efficient navigation.
Key functions include:
JRC continuously improved display technology from the JMA-3300 generation through the JMA-9100 Series, delivering better visibility, faster processing, and enhanced integration with bridge systems.
The scanner unit is mounted on the vessel's mast and contains the antenna, transmission components, and rotating drive mechanism.
Major scanner components include:
The scanner rotates continuously to provide a full 360° view of the surrounding area, transmitting microwave pulses and receiving reflected signals from nearby targets.
The signal processor serves as the brain of the radar system. It receives raw echo data from the scanner and converts it into a clear, usable radar image.
Its responsibilities include:
Modern JRC processors employ sophisticated digital algorithms to improve target detection while reducing false echoes.
The Automatic Radar Plotting Aid (ARPA) is one of the most valuable features in modern marine radar systems. It automatically tracks surrounding vessels and continuously calculates their movement relative to the own ship.
Typical ARPA capabilities include:
ARPA significantly enhances situational awareness and supports compliance with the International Regulations for Preventing Collisions at Sea (COLREGs).
Modern JRC radar systems integrate seamlessly with the vessel's Automatic Identification System (AIS), allowing radar echoes and AIS information to be displayed together.
Integrated AIS provides:
Combining radar and AIS improves target identification and reduces navigational uncertainty, especially in busy shipping lanes.
Depending on the model and software version, JRC radar systems may include:
SM MARINE SERVICE™ supplies complete JRC radar systems, scanner units, display units, processors, magnetrons, antenna motors, gearboxes, power supplies, keyboards, trackballs, interface boards, and a wide range of genuine and reconditioned spare parts.
JRC Marine Radar systems are trusted aboard thousands of commercial vessels operating around the world. Their reliability, accurate target detection, and compliance with IMO standards make them one of the preferred radar solutions for professional navigation.
Typical marine applications include:
JRC radar assists bridge officers with collision avoidance, long-range target detection, port approach, and traffic separation schemes.
Bulk carriers frequently operate in congested ports and open oceans where reliable radar performance is essential for safe navigation.
Tankers depend on dual radar installations for continuous navigation in restricted visibility and adverse weather conditions.
Gas carriers require highly reliable navigation equipment due to their hazardous cargo operations.
OSVs, anchor handling tugs, and supply vessels use JRC radar for close-quarter maneuvering around offshore platforms.
High-density traffic areas demand fast target acquisition, ARPA tracking, and AIS integration to enhance passenger safety.
Fishing fleets rely on JRC radar to detect nearby vessels, coastlines, weather cells, and navigation hazards.
Military and coast guard operators value JRC radar for its robust performance and dependable operation in demanding environments.
One of the greatest advantages of JRC radar systems is the long-term availability of spare parts. Even after many years of service, numerous components remain repairable or replaceable.
SM MARINE SERVICE™ supplies a wide range of genuine, used, and professionally reconditioned JRC radar spare parts for vessels worldwide.
The following issues are among the most frequently reported onboard JRC radar systems:
Possible causes:
Possible causes:
Possible causes:
Possible causes:
Possible causes:
Routine maintenance significantly extends the life of JRC radar systems.
Recommended maintenance schedule:
1. What is JRC Marine Radar?
A professional marine navigation radar system manufactured by Japan Radio Co.
2. Which JRC radar series is most common?
JMA-3300, JMA-5300 Mk2, JMA-7100, and JMA-9100.
3. What is the difference between X-Band and S-Band?
X-Band provides higher resolution, while S-Band offers better performance in rain and adverse weather.
4. Can old JRC radar systems still be repaired?
Yes. Many older systems remain repairable with available spare parts.
5. Do you supply reconditioned radar systems?
Yes. SM MARINE SERVICE™ supplies professionally tested reconditioned systems.
6. Can scanner motors be replaced?
Yes.
7. Do you supply magnetrons?
Yes.
8. Can processor boards be repaired?
In many cases, yes.
9. Do you ship worldwide?
Yes.
10. Do you provide technical support?
Yes.
11. Can you source discontinued JRC radar parts?
Yes, subject to availability.
12. Do you supply complete radar systems?
Yes.
13. Are used units tested before delivery?
Yes.
14. Do you provide replacement displays?
Yes.
15. Do you supply scanner assemblies?
Yes.
16. Can you repair display units?
Yes.
17. Do you supply power supplies?
Yes.
18. Do you provide installation guidance?
Yes.
19. Can you help identify spare parts by model number?
Yes.
20. Can you supply equipment from Bangladesh or China stock?
Yes.
The following is a consolidated list of popular JRC Marine Radar models and series frequently searched by marine engineers, purchasing departments, and ship managers:
JMA-3300 Series
JMA-3310, JMA-3310-4, JMA-3310-6, JMA-3320, JMA-3320-4, JMA-3320-6, JMA-3334, JMA-3336, JMA-3340-4, JMA-3340-6
JMA-5300 Mk2 Series
JMA-5312, JMA-5312-4, JMA-5312-6, JMA-5322, JMA-5322-7, JMA-5322-9, JMA-5332, JMA-5332-12
JMA-7100 Series
JMA-7100, JMA-7100-4, JMA-7100-6, JMA-7100-7, JMA-7100HS, JMA-7100SA
JMA-9100 Series
JMA-9100, JMA-9122, JMA-9132, JMA-9144, JMA-9200, JMA-9900
Common Spare Part Searches
JRC Radar Display Unit, JRC Radar Monitor, JRC Radar Scanner, JRC Scanner Motor, JRC Antenna Motor, JRC Gearbox, JRC Magnetron, JRC Receiver, JRC RF Module, JRC Signal Processor, JRC Video Board, JRC CPU Board, JRC Interface Board, JRC Keyboard, JRC Trackball, JRC Control Panel, JRC Power Supply, JRC HV Unit, JRC Slip Ring, JRC Bearing Kit, JRC Waveguide, JRC Junction Box, JRC Cooling Fan, JRC Communication Board, JRC Radar Cable.
SM MARINE SERVICE™ is a trusted global supplier of marine automation and navigation equipment, serving ship owners, managers, shipyards, and offshore operators with dependable products and technical expertise.
We offer:
Bangladesh Office
Samir Market, DT Road, Beside CDA Market, Pahartali, Chattogram, Bangladesh
China Warehouse & Support Center
Shanghai, China
Products & Services
Website
www.smmarineservice.com
Email
info@smmarineservice.com
WhatsApp
+8801818929292
Marketing Contact
Nazmul Hasan Bhuiyan
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