"> JRC (Japan Radio Co) JMA-9122 8ft Slotted
OceanSphere
Engines
⚓ Working on this equipment?
Ask the AI troubleshooter, log your hours on board and turn them into invoice-ready service reports — for this exact model.
Start free — 14 days →
No credit card required
Is JRC (Japan Radio Co) your company? Claim this page
JRC (Japan Radio Co)

JMA-9122 8ft Slotted

JRC (Japan Radio Co) JMA-9122 8ft Slotted is a shipboard unit in the Radar & ECDIS group, classified in the source as Radar. It is normally installed on the bridge, with radar scanners/antennas mounted on the mast or superstructure and ECDIS operator stations at navigation consoles. Its primary duty is to support collision avoidance, situational awareness and electronic navigation by presenting radar targets or approved chart/navigation information. In service it interfaces with GNSS, gyro/heading, speed log, AIS, radar scanners, bridge networks, displays and alarm systems. Compared with neighboring entries in the same product family, this record is the exact JRC (Japan Radio Co) JMA-9122 8ft Slotted variant; the model designation should be retained unchanged when matching onboard documentation and spares. For exact limits, settings, test values and approved maintenance criteria, refer to the manufacturer documentation for the exact figure.

Components & Design

Component data being added…

Technical Data

frequency band S-Band
antenna type 8ft Slotted
display size inch 19
imo compliant True
arpa True

🤖 Ask about this model

One free question — answered like a marine engineer. No account needed.

Common failures & inspection points

●Antenna/scanner drive or transmitter fault, typically indicated by loss of radar echoes, scanner alarm or abnormal rotation
●Display/processor or power-supply failure, typically indicated by blank screen, rebooting or loss of radar/ECDIS function
●Heading, speed or position input failure, typically indicated by misaligned overlays, incorrect vectors or sensor alarms
●Network/data interface fault, typically indicated by missing AIS/chart/sensor data or communication alarms
●Antenna, cable or connector water ingress/corrosion, typically indicated by intermittent performance, weak echoes or faults

Service & Maintenance

Check self-test and alarm logs, scanner condition, antenna rotation where applicable, sensor inputs, display controls, chart/update status for ECDIS, network interfaces and backup arrangements; exact alignment and performance criteria follow manufacturer and statutory documentation.

Suppliers & Spare Parts

Direct links to manufacturer, datasheet, spare-parts portal and dealers — request access below.

📄 Request sourcing links & documents
🛠 Manage this equipment in your fleet

Cases, daily reports, timesheets and AI troubleshooting in the OceanSphere Marine app — free for 14 days.

Start free trial →
🔎 Suppliers & service for this equipment

Find manufacturers, repair shops and spare-part dealers in the Maritime Network — our global company directory.

Maritime Network →

Replacement Parts

Carry critical fuses, power-supply modules, cooling fans, interface cards, keyboard/trackball components and approved backup media or display spares according to bridge-system criticality.
Working on this unit?
Log hours, photos and findings into an invoice-ready service report — OceanSphere Marine, 14-day free trial.
Need a service partner for JRC (Japan Radio Co)?
114,000+ shipyards, suppliers and service companies in the Maritime Network directory.
Equipment Model #126744 · ✓ still in production