• Japan Marina Co.
  • NT-2000 • NT-900

The NT-2000 is the latest 2-Channel 3-Frequency Navtex Receiver designed to fully comply with the new Navtex standards specified in the IMO Resolution MSC. 148(77) which come in effect on July 1, 2005.

Features:
Fully Compliant with IMO Resolution MSC.148(77)
8-inch Colour LCD Display
Simultaneous Reception of 518 and 490 or 4209.5 kHz
Large Character Size, 40 Characters/Line, 20Lines/Screen
Single-Keypress Protection of Stored Messages
Message Search Function
Three-Frequency Single Whip Active Antenna

Specifications

• Frequencies:
  518kHz (first receiver), 490kHz & 4209.5kHz (second receiver)
• Input Impedance:
  50ohm (active antenna) and 10ohm+150pF (long wire)
• Antenna:
  3-frequency active antenna, with 1.2m whip
• Sensitivity (1% CER):
  Better than 1µV/50ohm ant. input
• RF Input Protection:
  30Vrms
• Receiving Emisson Mode:
  F1B with FEC (ITU-R REC. 476-3, 540-1 and 625 B-mode)
• Reception Mode:
  Simultaneous reception of 518kHz and user-selected 490kHz or 4209.5 kHz.
• 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)
• Message Character Font Size:
  Approx. 5mm
• Message Scrolling:
  Line-by-line or message-by-message
• Message Storage:
  200 messages (average 500 character/message) for each 518, 490 and 4209.5Khz receivers
• Message Protection:
  Up to 50 user-selected messages for permanent storage.
• Message Outputs:
  All our selected displayed messages, all or selected stored messages
• Messages Search:
  Stored message searchable by transmitter and/or message type
• Alarms:
  Audible and visual (messages ID in red for message type A, B & L, and both message ID and text in red for messages type D)
• Alarms Output:
  2 pairs of relay contacts
• I/O Interfaces:
  RS-232C (printers), RS-422 (IBS/INS), NMEA-0182/IEC61162-1
• Power Requirements:
  24VDC (nominal), approx.15W.
• Cabinet Size & Weight:
  225/245(W) X 225/271(H) X 135(D) mm with/without mounting bracket. Approx. 3.3kg with bracket.
• Compass Safe Distances:
  80cm (standard), 45 cm (steering)
• Ambient Temperature:
  -15 to 55 °C (cabinet, operating, 95% RH), -40 to 70°C (antenna)

Note: Specifications, other then those specified under the relevant IMO recommendations and IEC specifications, are subject to change without notice or obligation

The NT-900 is a narrow band direct printing system designed to provide vital maritime information directly and automatically to a ship's bridge. A network of NAVTEX coastal stations beams marine safety information on a single frequency (518KHz) to all vessels within 200 to 400 miles offshore. Messages are broadcast on a time sharing basis to prevent mutual interference.

The compact NT-900 is a compact NAVTEX receiver which converts received messages to flat telex sentence with Forward Error Correction. Eliminating multiple printing of the same messages, the NT-900 only prints messages that has not been received previously. Specific messages IDs can also be selected so that only required information and transmitting areas can be selected. Error detection is also a built in function, allowing up to 128 messages to be stored for approximately 65 hours.

Features:
GMDSS compliant
Global distress alerting
Satellite location
High intensity xenon strobe
Small and light
Fully enclosed housing available
6 year battery life

Receiver Specifications:
Frequency 518kHz (fixed)
Receive mode F1B, FEC error correction mode (CCIR rec.476)
Spurious Emission Below 1nW
Input protection 30Vrms of RF input

Printer Specifications:
Printer type Thermal moving head dot matrix printer
Characters 5 X 7 dot-matrix, 421 characters/line
Printing speed 0.6 seconds/line
Recording paper Thermo sensitive paper, 112mm x 25m/roll
More than 250,000 characters printable per roll

Active Antenna Specifications:
Frequency 518kHz ± 10kHz
Voltage 8VDC, automatically supplied via receiver
Cable RG-58/U, 10 meters long
Weight 980g with coax cable attached

Power Requirement:
10 to 40 VDC, 6W (approx.)