PRE OWNED JRC JLR-7700 MK2 JRC JLR-7700 MK2 MARINE GPS

The JRC JLR-7700 MK2 (Display unit NWZ-4570) is an IMO-compliant GPS navigator that serves as the backbone of bridge navigation for thousands of deep-sea vessels. The MK2 version was introduced to provide faster position acquisition and more stable tracking in areas where signal interference is a concern. It features the same 5.7-inch high-visibility monochrome LCD that JRC is famous for, ensuring the bridge team has instant access to position, SOG, and COG data.

As a primary SOLAS navigator, the JLR-7700 MK2 is designed to feed precise data to the vessel's AIS, Radar, and ECDIS. Its internal software is optimized for reliability, featuring advanced filtering to prevent "position jumps" even in high-speed transit. For ship owners in the Indian maritime sector, the MK2 is the preferred "drop-in" replacement for older GPS systems, as it offers a perfect balance of traditional JRC durability and modern digital precision.

TECHNICAL SPECIFICATIONS

-- Model: JLR-7700 MK2 (NWZ-4570)

-- Manufacturer: JRC (Japan Radio Co., Ltd.)

-- Display: 5.7-inch Monochrome STN LCD

-- Resolution: 320 x 240 Pixels

-- Receiver Type: 12-channel parallel (High-sensitivity MK2 chipset)

-- Position Accuracy: GPS: Approx. 10m (95%), DGPS: 5m (Optional)

-- Storage: 2,000 Waypoints, 2,000 Track Points, 100 Routes

-- Interfaces: 3x NMEA 0183 Outputs, 1x NMEA Input, RS-232C

-- Supply Voltage: 12V to 24V DC

-- Power Consumption: Less than 10 W

-- Waterproofing: IPX5 (Display Unit)

-- Compliance: IMO MSC.112(73), IEC 61108-1, MED Certified

KEY FEATURES & APPLICATIONS

-- Enhanced Receiver Sensitivity: The MK2 hardware offers a faster "Time to First Fix" (TTFF) and maintains better lock-on in high-latitude or coastal environments with signal obstructions.

-- Standardized JRC Interface: Uses the familiar NWZ-4570 display, allowing crew members to operate the unit without extensive retraining if they have used previous JRC models.

-- Tri-Port Data Distribution: Equipped with three independent NMEA 0183 output ports, ensuring that all bridge electronics receive synchronized position and timing data.

-- Professional Navigational Tools: Includes a dedicated "Plotter" mode for visualizing the ship's track, a "Highway" mode for route steering, and a high-accuracy digital speedometer.

-- Built-in Self-Test (BITE): Continuously monitors antenna health and internal processor status, providing early warning alerts if any part of the navigation chain fails.

-- Compact & Robust Design: Built to military-grade standards for vibration and temperature resistance, making it ideal for the engine-room-adjacent bridge environments of large cargo ships.

TYPICAL CONDITION (USED/REFURBISHED)

Our refurbished JLR-7700 MK2 units from the Alang yards undergo a strict "Generation Check." We verify the internal MK2 processing board for peak performance and ensure the LCD backlight is consistent across all dimming levels for night watch. The internal memory battery is replaced to protect your critical ship routes. We also perform a rigorous test on the NMEA 0183 ports, ensuring they are broadcasting error-free data strings to external VDR and AIS systems. Every unit is factory-reset at our Bhavnagar facility.

COMPATIBLE BRAND MODELS:

JRC JLR-7700 MK2, JRC JLR-7700, JRC JNAV-500, Furuno GP-150, Furuno GP-170, Furuno GP-90, Koden KGP-920, Tokyo Keiki G-1, Samyung GP-290.

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