JAPAN RADIO CO. LTD. (JRC) NCR-300A NAVTEX RECIEVER,PRINTER, TYPE-NRS1NM-1 NR90001 17:49

• NAVTEX RECEIVER
• BRAND: JRC
• MODEL: NCR-300A
• PRINTER
• APPROVED TYPE: NRS1NM-1
• APPROVAL NO: NR90001
• APPROVAL DATE: 5/11/90
• SERIAL NO: GD11495
• WEIGHT: 2.5 KG
• COMPASS SAFE DISTANCE: 1.0M
• JAPAN RADIO CO. LTD
• MADE IN JAPAN

The JRC NCR-300A is a professional marine NAVTEX (Navigational Telex) receiver system designed for the automatic reception of maritime safety information (MSI). It is a fully integrated unit, typically consisting of the main receiver and a built-in thermal printer, providing ships with a critical, stand-alone source of navigational and meteorological warnings, forecasts, and urgent safety messages.

This system is built to meet and exceed the stringent performance standards set by the International Maritime Organization (IMO) and the Global Maritime Distress and Safety System (GMDSS). It is a common fitment on SOLAS-class vessels (cargo ships, tankers, passenger ships) as well as high-end yachts and other commercial craft.

System Components Breakdown

1. NCR-300A Main Unit (incorporating the NRS1NM-1 Receiver)

The NCR-300A is the core of the system. The model NRS1NM-1 refers to the specific receiver module or variant within the NCR-300A chassis.

• Function: It tunes to the international NAVTEX frequency of 518 kHz to receive MSI in English from coast stations around the world. Optionally, it can also receive on 490 kHz and 4209.5 kHz for broadcasts in local languages and for high-seas coverage, respectively.

• Key Features:

  • Automatic Operation: Once set up, the system operates completely automatically. It turns on and off at scheduled times to receive broadcasts, prints relevant messages, and rejects duplicates and unwanted messages.

  • Advanced Filtering: Uses a sophisticated FSK (Frequency Shift Keying) demodulator and a narrow bandwidth filter to ensure excellent reception and rejection of adjacent channel interference.

  • Message Management: The internal microprocessor stores message identifiers and rejects:

    • Duplicate Messages: Prevents wasting paper on the same message received again.

    • Unwanted Messages: The operator can manually program the unit to reject messages from specific transmitters (B1 character) and for specific message categories (B2 character) that are not relevant to the vessel’s voyage.

  • Self-Test: Features a built-in self-test function to verify the printer and receiver circuitry are operating correctly.

  • Alarms: Includes visual and audible alarms to indicate printer faults (e.g., paper out) or receiver failure.

2. NR90001 Printer

The NR90001 is the integrated thermal line printer unit housed within the NCR-300A mainframe.

• Type: Thermal Line Printer. This means it uses heat to print on special thermal paper, resulting in quiet, fast, and reliable operation with no ink cartridges or ribbons to replace.

• Function: It provides a permanent, hard-copy record of all received NAVTEX messages. This paper record is crucial for the ship’s log and for bridge officers to review information at a glance.

• Key Features:

  • Quiet Operation: Ideal for the bridge environment.

  • Reliability: Thermal printing has very few moving parts, making it highly reliable and maintenance-free.

  • Automatic Paper Cutter: Many units feature an automatic cutter to separate messages into individual sheets for easy filing and handling.