JRC 75 C Antenna
JRC
Refurbished
The JRC JUE-75C is an INMARSAT-C Mobile Earth Station manufactured by Japan Radio Co., Ltd. (JRC) for reliable shipboard satellite data communication.
The antenna associated with the JUE-75C system is the NAF-74B Externally Mounted Equipment (EME). It is installed above deck and provides the satellite RF interface between the vessel's JUE-75C communication system and the INMARSAT network.
SM MARINE SERVICE™ supports sourcing of JRC JUE-75C equipment, NAF-74B antennas and related spare parts for vessels worldwide.
Manufacturer: Japan Radio Co., Ltd. (JRC)
Country of Origin: Japan
System Model: JUE-75C
Antenna / EME Model: NAF-74B
Product Type: INMARSAT-C Mobile Earth Station Antenna / Externally Mounted Equipment
Marine Application: Marine satellite communication and GMDSS-related communication
System Family: JRC JUE-75C INMARSAT-C Mobile Earth Station
The JRC NAF-74B is the externally mounted equipment used with the JUE-75C INMARSAT-C system.
Installed in a suitable open location above deck, the antenna communicates with INMARSAT satellites while connecting to the vessel's internally mounted JUE-75C equipment through a coaxial cable.
Its compact marine-grade construction made the JUE-75C suitable for commercial vessels, fishing vessels and other ships requiring dependable satellite messaging.
• Genuine JRC INMARSAT-C system component
• NAF-74B Externally Mounted Equipment
• Designed for JRC JUE-75C
• Compact marine-grade construction
• Suitable for exposed shipboard installation
• Single coaxial EME-to-IME connection
• Marine satellite data and messaging capability as part of the complete system
• Suitable for GMDSS-related JUE-75C installations
• Designed for long-term marine operation
System: JRC JUE-75C
External Equipment: NAF-74B EME
Communication System: INMARSAT-C
Transmit Frequency: 1626.5–1646.5 MHz
Receive Frequency: 1525.0–1545.0 MHz
Installation: Above-deck external installation
Connection: Coaxial connection between EME and IME
Installation and electrical testing should always follow the appropriate JRC technical documentation.
Major documented equipment associated with the system includes:
• NAF-74B – Externally Mounted Equipment (EME)
• NTF-78A – Internally Mounted Equipment (IME)
• NDZ-127C – Data Terminal Equipment (DTE)
• NDF-268 – Keyboard
• NKG-800 – Printer
• NBD-577A – AC/DC Power Supply
• Distress button and related facilities
• EME-to-IME coaxial cable
• Associated navigation interfaces and peripherals
These component numbers are especially useful when sourcing replacement equipment for an existing JUE-75C installation.
JRC JUE-75C equipment can be found aboard:
• Cargo Ships
• Tankers
• Bulk Carriers
• Container Vessels
• Offshore Vessels
• Fishing Vessels
• Merchant Ships
• Other vessels using legacy JRC INMARSAT-C systems
Inspect the NAF-74B antenna, coaxial cable, connectors, internally mounted equipment and associated power supply.
Corroded or loose coaxial connectors, moisture ingress and deteriorated cables can cause unstable communication.
Check the antenna/EME communication path, terminal configuration, cable integrity and associated system equipment.
Inspect the vessel's supply, power wiring, fuses and NBD-577A or associated power supply equipment.
Older NAF-74B antennas may develop housing deterioration, corrosion or water ingress after prolonged exposure to marine conditions.
Verify that the replacement equipment is compatible with the JUE-75C system and inspect all coaxial connections before replacing additional components.
Regularly inspect the NAF-74B housing for physical damage, corrosion and signs of water ingress.
Check mounting hardware and coaxial connectors during routine vessel maintenance. Cable condition is particularly important because antenna-related symptoms can also be caused by cable or connector deterioration.
Before replacing an NAF-74B, technicians should verify the antenna cable, IME and power supply to avoid unnecessary replacement.
SM MARINE SERVICE™ can support sourcing of JRC JUE-75C and NAF-74B replacement equipment, depending on current stock.
Available requirements may include:
• NAF-74B Complete Antenna / EME
• JUE-75C Complete Equipment
• NTF-78A Internally Mounted Equipment
• NDZ-127C Data Terminal Equipment
• NBD-577A Power Supply
• NDF-268 Keyboard
• NKG-800 Printer
• Coaxial Cable
• Connectors
• Internal Electronic Parts
• Associated JUE-75C Accessories
Equipment may be available in used, tested working, refurbished or reconditioned condition, subject to stock.
Because JRC has discontinued the JUE-75C, sourcing good tested legacy equipment can be important for vessels wishing to maintain an existing installation.
The JUE-75C is an older JRC system, but existing installations may continue to be maintained when the equipment remains serviceable and appropriate for the vessel.
For these vessels, replacing a failed NAF-74B antenna, power supply, terminal or other individual component can be more practical than replacing the entire onboard communication installation.
The JRC JUE-75C is an INMARSAT-C Mobile Earth Station designed for marine satellite data and message communication.
It was manufactured by Japan Radio Co., Ltd. (JRC), Japan.
The documented externally mounted equipment for the system is the JRC NAF-74B.
JRC lists the JUE-75C as a discontinued product. However, used, refurbished and reconditioned equipment may still be available in the marine spare-parts market.
SM MARINE SERVICE™ can support sourcing and worldwide supply of JRC NAF-74B antennas, subject to stock availability.
Yes. Legacy antennas, terminal equipment, power supplies, cables and other components may still be sourced depending on availability.
Yes. Used, tested working, refurbished and reconditioned NAF-74B equipment may be supplied subject to stock.
Possible causes include antenna failure, coaxial cable or connector problems, power-supply faults, IME faults or system configuration problems.
JRC's archived documentation and JUE-75C technical manuals can be used for system operation, installation and technical reference.
Yes. SM MARINE SERVICE™ supports international sourcing and worldwide shipping according to stock and destination.
JRC JUE-75C INMARSAT-C NAF-74B Antenna / EME for marine satellite communication systems. Suitable for replacement requirements on existing JUE-75C installations. Used, tested, refurbished and reconditioned equipment can be supplied by SM MARINE SERVICE™ subject to availability, with worldwide shipping and technical sourcing support.
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
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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