PRE OWNED JRC NWZ-4740 JRC NWZ-4740 MARINE GPS

The JRC NWZ-4740 features a 5.7-inch high-visibility monochrome LCD, specifically engineered to display complex heading, position, and vessel attitude data. Unlike standard GPS displays, the NWZ-4740 is optimized for "Satellite Compass" functionality, providing real-time digital and graphical representations of the ship's heading with high resolution. It is known for its "Silver Bright" reflective technology, which ensures the screen remains sharp and readable even in the high-glare environments of a tropical bridge.

This unit serves as the control hub for the JLR-21/31 antenna arrays. It processes the raw satellite signals into usable NMEA data strings for the entire bridge. The NWZ-4740 is highly valued by mariners for its stability and its ability to provide 3-axis motion data (roll, pitch, and heave), which is essential for stabilizing high-end hydrographic equipment and ensuring accurate Radar "North-Up" tracking.

TECHNICAL SPECIFICATIONS

-- Model: NWZ-4740

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

-- Display Type: 5.7-inch Monochrome STN LCD

-- Resolution: 320 x 240 Pixels

-- Heading Resolution: 0.1°

-- Update Rate: High-speed (Up to 20Hz for heading data)

-- Controls: Dedicated keypad with numeric entry and function keys

-- Data Views: Heading, GPS Position, ROT (Rate of Turn), and Satellite Status

-- Interfaces: Connection for JLR-21/31 Sensor, NMEA 0183 Outputs

-- Supply Voltage: 12V to 24V DC

-- Operating Temperature: -15°C to +55°C

-- Compatibility: Primary display for JRC JLR-21 and JLR-31 Satellite Compasses

KEY FEATURES & APPLICATIONS

-- High-Precision Heading Display: Provides a digital readout of the vessel's heading with 0.1° resolution, serving as a reliable primary or back-up heading source for SOLAS vessels.

-- Rate of Turn (ROT) Indicator: Features a dedicated graphical ROT scale, assisting the bridge team in monitoring the vessel’s swing during complex maneuvers or docking.

-- 3-Axis Motion Monitoring: Displays real-time roll, pitch, and heave data, allowing officers to monitor vessel stability and provide correction data to sonar and echo sounders.

-- Tactile "Direct Keys": The keypad includes dedicated buttons for dimming, mode switching, and alarm silencing, ensuring rapid operation during high-traffic navigation.

-- Rugged Industrial Design: Built to withstand the extreme vibrations and thermal fluctuations typical of deep-sea merchant vessel bridges.

-- Advanced Data Distribution: Acts as a signal distributor, sending high-speed heading and position data to Radars, AIS, ECDIS, and Autopilots simultaneously.

TYPICAL CONDITION (USED/REFURBISHED)

Our refurbished NWZ-4740 units from the Alang yards undergo an intensive technical validation. We focus heavily on the LCD contrast and backlight integrity, ensuring no "ghosting" or fading on the monochrome screen. The keypad membrane is tested for full responsiveness across all environmental temperatures. Most importantly, we verify the data communication ports to ensure perfect synchronization with the JLR antenna array and external bridge equipment. Every unit is factory-reset and provided with a detailed test report from our Bhavnagar facility.

COMPATIBLE BRAND MODELS:

JRC NWZ-4740, JRC JLR-21, JRC JLR-31, JRC JLR-10, Furuno SC-50, Furuno SC-60, Furuno SC-110, Simrad HS70, Sperry Marine NAVIGAT.

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