NAVTEX Receivers

NAVTEX is a system for the broadcast and automatic reception of maritime safety information by means of a narrow-band direct-printing telegraphy. NAVTEX provides shipping with navigational and meteorological warnings and urgent information through automatic printouts from a dedicated receiver.

NAVTEX is a component of the IMO/IHO Worldwide Navigational Warning Service (WWNWS) defined by IMO Assembly resolution A.706(17). It has also been included as an element of the Global Maritime Distress and Safety System (GMDSS). Since 1 August 1993, NAVTEX receiving capability has become part of the mandatory equipment which is required to be carried in certain vessels under the provisions of the International Convention for the Safety of Life at Sea (SOLAS). New IMO resolution MSC.148 (77) requires NAVTEX receivers implemented on and after 1 July 2005 to include Dual channel reception, 518 kHz and either 490 or 4209.5 kHz, simultaneously.

Furuno NX-700 series

FURUNO NX-700 is a dual-channel NAVTEX receiver for SOLAS ships complying with the new NAVTEX performance standard MSC.148(77) which is implemented on and after 1 July 2005.

The NX-700 can receives two channels simultaneously. One is set for 518 kHz to receive international NAVTEX messages and another is selectable from 490 or 4209.5 kHz for domestic or local NAVTEX messages. These messages include a variety of safety information such as Navigational Warnings, Meteorological Warnings, Search and Rescue (SAR) information and other information for ships sailing within the reach of each service station’s coverage. The broadcast station can be selected automatically according to own ship position when the NX-700 is connected with a GPS navigator.

Every incoming message is stored in non-volatile memory and is displayed on the clear 5″ silver bright LCD. Three different font sizes are available and one of them can be selected on menu.

The NX-700-A consists of a receiver, display with printer and antenna units. The NX-700-B has a low profile, stylish display without a printer, receiver and antenna units. The compact umbrella type antenna requires no grounding because it is H-field antenna. In addition, the antenna incorporates a high-performance preamp within the compact body, which gives reliable and uninterrupted reception without an extra whip antenna.

Dual channel reception, 518 kHz and either 490 or 4209.5 kHz, simultaneously
Incorporates a printing device (NX-700-A) or a dedicated display device with printer output (NX-700-B)
200 message of average length 500 characters can be stored in nonvolatile memory
Incorporates a preamp within a lightweight, compact antenna for reliable, uninterrupted reception
Display messages on a clear 5″ silver bright LCD
Low power consumption
NAV data display acts as NMEA repeater for GPS or instruments

Standard set of equipment:

Receiver Unit NX-7001
Antenna Unit NX-7H
Display Unit with Bracket (Specify when ordering): NX-700-A Display with Printer or NX-700-B Display only
Installation Materials and Spare Parts

Optional:

Antenna Mounting Base
Cable for Antenna 3D2V,10/20/30/40/50 m; RG10U, 30/40/50 m
Cable for Display Unit D-Sub 25P to D-Sub 25P, 5/10/15 m
Flush Mount Kit for Display Unit
Power Supply Unit PR-240-CE
Thermal Paper for NX-700-A

NAVTEX RECEIVER:
Receiving Frequency:	518 kHz and 490 or 4209.5 kHz
Mode of Reception:	F1B
Sensitivity:	2 µV e.m.f. (50 Ω), 4% error rate
Input Protection:	Withstands 30 Vrms for 15 min or more (w/ preamp unit)
Spurious Emission:	1 nW or less
Message Category:	A: Navigation warning B: Meteorological warning C: Ice report D: Search and rescue information/ piracy and armed robbery E: Meteorological forecast F: Pilot message G: Decca message H: Loran-C message I: Omega message J: Differential omega message K: Other electronic navigational aid and system message L: Navigational warning (additional) M to Y: Reserved – presently not used V: Notice to Fishermen (US only) Z: QRU (no message on hand)
DISPLAY:
Screen Size:	5″‘ monochrome LCD, 76 ×100mm
Resolution:	240 × 320
Display Modes:	Message, List, NAV Data
ID Storage:	200 × 2 channels
Message Storage:	200 messages × 2 channels (100,000 characters × 2 channels)
PRINTER SECTION (for NX-700-A):
Printing System:	Line thermal head
Printing Paper:	Thermal paper (58mm × 30m)
Printing Width:	48 mm
Character Format:	24 × 12 dot
Dot Pitch:	8 dots/mm
Number of Characters:	32 characters/line
Print Speed:	20 mm/sec.
ANTENNA UNIT:
Antenna Type:	NX-7H: H-field antenna with preamp
Output Impedance:	50 Ω
Power Supply:	+8 V to +9 V (thru co-ax cable)
INTERFACE:
Input:	IEC61162-2 ACK, GGA, GLL, GNS, NMK, NRQ, RMC, VBW, VHW, VTG, ZDA
Output:	IEC61162-2 message data for INS, PC, ALR, NRX RS-232C for printer(NX-700-B only)
Alarm:	Contact closure signal (max. 0.5A, 50V) for SAR alert
POWER SUPPLY:
NX-700-A:	12-24 VDC, 1.5-0.8 A
NX-700-B:	12-24 VDC, 0.7-0.4 A
ENVIRONMENT (fully complied with IEC 60945 3rd/4th ed.):
Temperature: Antenna Unit Receiver, Display Unit	-25°C to +70°C -15°C to +55°C
Waterproofing: Antenna Unit Receiver Unit Display Unit NX-700-A Display Unit NX-700-B	IP66 IP20 IP20 IP25 (front panel)

JMC NT-2000

Fully Compliant with IMO Resolution MSC.148(77) which came into effect on July 1, 2005
An 8-inch color TFT LCD replaces recording paper
NT-2000 shows search and rescue (SAR) messages in red to clearly differentiate distress messages from navigational or meteorological warnings
Three colors are selectable for the screen background
Simultaneous Reception of 518 and 490 or 4209.5 kHz
Large Character Size, 40 Characters/Line, 20 Lines/Screen
Single-Keypress Protection of Stored Messages
Stored messages are searchable by station ID and/or by message category
Output from a total of three external interface connectors for printing on line or for processing by shipboard or shore-based applications

Three-Frequency Single Whip Active Antenna for space-limited installation

Specification:

Display Screen:	8-inch color TFT LCD, daylight-viewing, backlit, with user-set screen sleep mode
Text Display:	40 characters per line, 18 lines (message) + 2 lines (status indication & prompts)
Font Size:	Approx. 5 mm
Message Scrolling:	Line-by-line or message-by-message
Message Storage:	200 messages (average 500 characters/message) for each frequency
Message Protection:	Up to 50 user-selected messages for permanent storage
Message Outputs:	All or selected displayed messages, all or selected stored messages
Message Search:	Stored message searchable by transmitter and/or message type
Frequencies:	518 kHz (first receiver), 490 kHz & 4209.5 kHz (second receiver)
Input Impedance: active antenna long wire	50Ω 10Ω+150pF
Sensitivity:	<1 µV/50Ω
Antenna:	3-frequency active antenna, with 1.2m whip
RF Input Protection:	30Vrms
Receiving Emission Mode:	F1B with FEC (ITU-R REC. 476-3, 540-1 and 625 B-mode)
Alarms:	Audible and visual (message ID in red for message types A, B & L, and both message ID and text in red for message type D)
Alarm Output:	2 pairs of relay contacts
NMEA-0182 Interfaces: Printer IBS/INS	RS-232C RS-422
Compass Safe Distances:	80 cm (standard) 45 cm (steering)
Power Requirements:	24VDC (nominal), approx. 15W
Ambient Temperature:	-15°С to +55°С (cabinet) -40°С to +70°С (antenna)
Weight:	Approx. 3.3 kg with bracket
Dimensions:	225/245(W) × 225/271(H) × 135 mm with/without mounting bracket

JRC NCR-333

Full meet latest IMO
3 receiving frequencies
5.7-inch Wide LCD Screen
Automatic Tune Function by GPS
Easy Installation and Operation
External Printer (Option)

Navtex data export function for INS (ECDIS or etc.)

Diagram: NCR-333

Specification:

Display:	5.7-inch Black & White LCD
Received message storage function:	Each Channels 200 messages
Storage length:	70 hours
Receiving frequency:	490 kHz, 518 kHz, 4209.5 kHz
Receiving mode:	F1B NAVTEX
Sensitivity:	CER better than 1×10^-2 at 1µV input to 50Ω antenna
Frequency stability:	±15 Hz
Output NMEA-0182:	2 ports (For Printer and INS)
Power supply:	12~24V DC 100/220V AC (option)
Weight: Display Antenna	2.1 kg with mounting bracket 0.3 kg
Dimensions: Display Antenna	162 × 268 × 92 mm 800 mm

Navtex Printer JMC PR-950

Serial dot-matrix thermal printer
Plugs in directly to JMC display-type NAVTEX receivers NT-1800 and NT-2000
Connectable to outdated NAVTEX receivers JMC NT-900 in case of printhead failure (Navtex SW upgrade required)

Prints 52 message characters/line across 112 mm-wide thermo-sensitive paper

Specification:

Printer Type:	Thermal head line printer
Paper width:	112 mm
Printing width:	104 mm (832 dots)
Dot density:	8 line / mm
Number of Characters:	52 character / line
Character Font Size:	16×16 dots
Input:	Current loop or RS-232C
Format:	110 or 4800 Baud, 8 bit Length, non-parity
Power supply:	24 VDC
Power consumption: Standby Printing	0,2 A <2 A
Dimensions:	172 × 182 × 84 mm
Temperature:	-15 to +55°C

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