JRC Radar JMA – 5322
Japan Radio Co., Ltd. (JRC)
Refurbished
The JRC JMA-5322 is a professional X-band marine navigation radar belonging to the JRC JMA-5300MK2 radar family.
JRC offers several JMA-5322 configurations, including JMA-5322-7, JMA-5322-9 and JMA-5322-6HS, allowing different antenna sizes and rotation speeds depending on vessel requirements. The standard JMA-5322 variants use 25 kW X-band transmission power at 9410 MHz ±30 MHz.
The system is suitable for commercial vessels requiring reliable target detection, collision-avoidance support and integration with bridge-navigation equipment.
Manufacturer: Japan Radio Co., Ltd. (JRC)
Country of Origin: Japan
Series: JMA-5300MK2
Model Family: JMA-5322
Product Type: X-Band Marine Navigation Radar
Transmission Power: 25 kW
Frequency: 9410 MHz ±30 MHz
Display: Colour Raster Scan PPI
Marine Application: Navigation, target detection and collision avoidance
JRC's official specification identifies three important JMA-5322 configurations: JMA-5322-7 with 7 ft antenna, JMA-5322-9 with 9 ft antenna, and JMA-5322-6HS with 6 ft high-speed antenna.
Scanner: NKE-2254-7
Antenna: 7 ft
Power: 25 kW
Frequency: X-band, 9410 MHz ±30 MHz
Rotation: 24 rpm
Horizontal Beamwidth: 1.0°
Scanner: NKE-2254-9
Antenna: 9 ft
Power: 25 kW
Rotation: 24 rpm
Horizontal Beamwidth: 0.8°
Scanner: NKE-2254-6HS
Antenna: 6 ft
Power: 25 kW
Rotation: 48 rpm
Horizontal Beamwidth: 1.2°
These specifications are listed by JRC for the JMA-5300MK2 family.
• 25 kW X-band radar transmission
• 7 ft, 9 ft and high-speed 6 ft configurations
• Maximum range scale up to 96 NM
• Automatic and manual tuning
• True Motion presentation
• Head-Up, North-Up and Course-Up modes
• Radar target trails
• Sea and rain clutter suppression
• Interference rejection
• Electronic Bearing Lines (EBL)
• Variable Range Markers (VRM)
• Target Tracking functionality depending on configuration
• Self-diagnostic functions
• High-resolution colour radar presentation
JRC also highlights its Constaview™ digital signal processing, TEF™ target enhancement and brushless antenna motors in the JMA-5300MK2 family.
The official JRC specification lists the following range scales:
0.125 / 0.25 / 0.5 / 0.75 / 1.5 / 3 / 6 / 12 / 24 / 48 / 96 NM
This allows the radar to support both close-range maneuvering and longer-range navigation.
A typical JRC JMA-5322 radar installation includes:
• Radar Scanner / Antenna
• Scanner Transceiver Electronics
• Radar Processor
• Radar Control Keyboard
• Trackball Control
• Display / Monitor
• Scanner Cable
• Power Supply Equipment
• Heading / Speed Interfaces
• Radar interconnection cables
Depending on the version, the scanner may be NKE-2254-7, NKE-2254-9 or NKE-2254-6HS.
The scanner is one of the most important parts of the JMA-5322.
The 7 ft NKE-2254-7 provides approximately 1.0° horizontal beamwidth, while the 9 ft NKE-2254-9 narrows this to approximately 0.8°. The high-speed 6 ft NKE-2254-6HS rotates at 48 rpm.
A narrower horizontal beam can improve target separation and bearing discrimination.
The JMA-5300MK2 family can also be configured as a black-box radar, allowing the radar processor and control equipment to be integrated with a suitable bridge display arrangement.
This is useful for bridge retrofits and installations where operators want more flexibility in monitor placement.
JRC describes the JMA-5300MK2 specifically as a Black Box Radar family.
The JMA-5300MK2 operating documentation includes functions such as:
• Gain adjustment
• Sea clutter suppression
• Rain/snow clutter suppression
• Interference rejection
• Cursor range/bearing measurement
• Fixed and variable range markers
• Electronic Bearing Line
• Own-track display
• True Motion
• Radar trails
• Head-Up presentation
• North-Up presentation
• Course-Up presentation
• Target Tracking functions
• Self-diagnostics.
These functions support both navigation and collision-avoidance operations.
JRC JMA-5322 radar systems can be found aboard:
• Cargo Ships
• Container Ships
• Bulk Carriers
• Oil Tankers
• Chemical Tankers
• LNG/LPG Carriers
• Offshore Vessels
• Passenger Vessels
• Workboats
• Commercial Ships
• Merchant Vessels
The JMA-5300MK2 family was designed for professional commercial marine radar applications.
Inspect scanner power, antenna motor, drive mechanism, cabling and scanner electronics.
Check transmission status, magnetron/transmitter condition, scanner electronics, tuning and receiver section.
Possible causes include:
• Magnetron deterioration
• Incorrect gain
• Excessive clutter suppression
• Receiver problems
• Scanner/transceiver faults
• Antenna or waveguide-related issues
Check processor power, monitor supply, interconnection cables and internal power components.
Inspect gyro heading input, interface settings and heading-source configuration.
Verify heading input and scanner alignment before assuming a radar processor fault.
Inspect keyboard cable, processor connection and control-unit electronics.
For the JMA-5322-6HS, inspect the high-speed scanner drive and associated electronics because this model operates at 48 rpm.
• Inspect scanner rotation regularly.
• Check antenna and scanner for corrosion.
• Inspect scanner cable and connectors.
• Keep processor and display ventilation clear.
• Monitor radar transmission performance.
• Check heading and speed inputs.
• Verify EBL/VRM accuracy periodically.
• Check sea/rain clutter controls.
• Investigate weak echoes before complete failure.
• Follow JRC maintenance procedures before internal adjustment.
JRC uses brushless antenna motors across this radar family to support longer service life.
SM MARINE SERVICE™ can support sourcing of complete JRC radar equipment and individual replacement components, subject to stock.
Typical requirements include:
• Complete JMA-5322 Radar
• JMA-5322-7 Radar
• JMA-5322-9 Radar
• JMA-5322-6HS Radar
• NKE-2254-7 Scanner
• NKE-2254-9 Scanner
• NKE-2254-6HS Scanner
• Radar Antenna
• Radar Processor
• Radar Control Keyboard
• Trackball Unit
• Radar Display / Monitor
• Magnetron
• Scanner Motor
• Power Supply
• Transmitter PCB
• Receiver PCB
• Processor PCB
• Modulator Components
• Radar Cables & Connectors
• Internal Electronic Parts
Available condition may include:
New • Used • Tested Working • Refurbished • Reconditioned
SM MARINE SERVICE™ can also support sourcing for other JRC JMA radar families, depending on availability.
Customers searching for older JRC marine radar parts can send:
Radar Model + Scanner Model + Part Number + Clear Photograph
This is especially important because similar-looking JRC scanner or processor components may have different specifications and compatibility.
A complete radar replacement can require changes to the vessel's:
• Scanner installation
• Radar cabling
• Bridge console
• Display arrangement
• Heading interface
• Speed input
• AIS/interface connections
• Power arrangement
If only a scanner, processor, control panel or internal board has failed, sourcing a compatible replacement component may allow the existing radar installation to remain operational without a major bridge retrofit.
The JMA-5322 is a 25 kW X-band marine radar family within JRC's JMA-5300MK2 series.
Important variants include JMA-5322-7, JMA-5322-9 and JMA-5322-6HS.
JRC specifies the NKE-2254-7 7 ft scanner.
The JMA-5322-9 uses the NKE-2254-9 9 ft scanner.
It is a high-speed version using a 6 ft NKE-2254-6HS scanner operating at 48 rpm.
The JMA-5322 family uses 25 kW X-band transmission power.
JRC lists range scales extending to 96 nautical miles.
SM MARINE SERVICE™ can support sourcing of JMA-5322 scanners, processors, control units, electronic boards and other radar components, subject to stock.
Used, tested, refurbished and reconditioned JRC radar equipment may be available depending on stock.
JRC JMA-5322 is a professional 25 kW X-band marine navigation radar from the JMA-5300MK2 series. Variants include JMA-5322-7 with 7 ft scanner, JMA-5322-9 with 9 ft scanner and JMA-5322-6HS high-speed configuration. SM MARINE SERVICE™ can support worldwide sourcing of complete JRC radar systems, scanners, processors, control units and spare parts in new, used, tested, refurbished and reconditioned condition.
JRC's official product page contains model configurations, scanner types, transmitting power, antenna dimensions and technical specifications.
JRC JMA-5300MK2 Official Product Page
The official JRC brochure provides details about the JMA-5322 variants, radar functions, Constaview™, TEF™ and system configuration.
JRC JMA-5300MK2 Official Brochure PDF
Marine Automation, Navigation & Communication Equipment Supplier
Available Equipment:
Marine Radar • Radar Scanner • Radar Processor • Radar Display • Magnetron • PCB • Control Unit • Navigation Equipment • Marine Spare Parts
Available Condition:
New • Used • Tested Working • Refurbished • Reconditioned
Stock / Sourcing:
Bangladesh • China • Worldwide
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
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