Table of Contents
How does a NAVTEX work?
HOW NAVTEX WORKS? The Navtex works on a frequency of 518 kHz in the medium frequency band. 490 kHz frequency is also used by some countries for broadcasts in the national languages, also known as national navtex. Each Navarea has multiple navtex stations which further helps in transmitting the messages.
What is NAVTEX range?
NAVTEX transmissions have a designed range of about 400 nautical miles.
Where do NAVTEX messages come from?
NAVTEX broadcasts are primary made on the international medium frequencies of 518 kHz USB using narrow-band direct printing (NBDP). The characters are encoded using the 7-bit CCIR 476 character set and basic error detection is enabled by employing forward error correction (FEC).
What are the information we can get from NAVTEX?
It automatically receives Maritime Safety Information such as Radio Navigational Warnings, Storm/Gale Warnings, Meteorological Forecasts, Piracy Warnings, Distress Alerts, etc. (full details of the system can be found in IMO Publication IMO-951E – The NAVTEX Manual).
How do you read a navtex?
Going section-by-section, the message can be explained as follows; Line 1 – ZCZC indicates the start of a message. F indicates the geographic area and A60 indicates the ‘subject’ of the message. For example, ‘A’ classifies the message as a ‘Navigational Warning’.
Where is the navtex area?
Contents
- 1 Stations.
- 2 Navarea 1 – North Atlantic, North Sea, Baltic Sea.
- 3 Navarea 2 – East Atlantic.
- 4 Navarea 3 – Mediterranean Sea.
- 5 Navarea 4 – West Atlantic.
- 6 Navarea 5 – Brasil.
- 7 Navarea 6 – Argentina, Uruguay.
- 8 Navarea 7 – South Africa.
How do you read a NAVTEX?
Where is the NAVTEX station?
How do I read navtex messages?
The message category is used to classify the nature of each NAVTEX message. Of particular note are message types ‘D’ (search and rescue), ‘A’ and ‘L’ (navigational warnings) and ‘E’, ‘B’ and ‘C’ (meteorological warnings).
What are the message categories for NAVTEX?
Where is the NAVTEX area?
It can be used in ships of all types and sizes. The area covered by Navtex can extend as far as 400 nautical miles from the broadcast station. A NAVTEX receiver onboard prints out navigational and meteorological warnings and forecasts as well as urgent Marine Safety Information to ships.
How far can NAVTEX be extended?
The area covered by Navtex can extend as far as 400 nautical miles from the broadcast station. A NAVTEX receiver on board prints out navigational and meteorological warnings and forecasts as well as urgent Marine Safety Information to ships.
What does navnavtex stand for?
NAVTEX (NAVigational TEleX), sometimes styled Navtex or NavTex, is an international automated medium frequency direct-printing service for delivery of navigational and meteorological warnings and forecasts, as well as urgent maritime safety information (MSI) to ships.
What do the numbers in a NAVTEX message mean?
Every Navtex message has information within the message header. In the above message: The letter “O” indicates a broadcast from the Navtex station, here Portpatrick radio. “A” indicates a Navigational warning category message. ‘20’ indicates the navigational warning message priority sequence.