GMDSS NAVTEX TEST QUESTIONS AND
ANSWERS
How is a mutual interference on 518 kHz among NAVTEX stations avoided? -
ANSWER Transmissions scheduled on a time-sharing basis, power limited and
station assignment codes are geographically separated.
When do NAVTEX broadcasts typically achieve maximum transmitting range?
- ANSWER Middle of the night
What should a GMDSS Radio Operator do if a NAVTEX warning message is
received by contains too many errors to be usable? - ANSWER Do nothing.
Vital NAVTEX messages will be repeated on the next scheduled broadcast.
Which of these cannot happen when a paper model NAVTEX reciever runs out
of paper? - ANSWER The system will automatically change from recieving
MSI by NAVTEX to receiving it by SafetyNET so that no messages will be
lost.
Which of the following is the primary frequency that is used exclusively for
NAVTEX broadcasts internationally? - ANSWER 518 kHz
What is the transmitting range of most NAVTEX stations? - ANSWER
Typically 200-400 nautical miles (360-720 km).
How is a NAVTEX receiver programmed to reject certain messages? -
ANSWER By choosing a message category's single letter (A-Z) identifier and
then deselecting or deactivating.
How can reception of certain NAVTEX broadcasts be prevented? - ANSWER
The receiver can be programmed to reject certain stations and message
categories
ANSWERS
How is a mutual interference on 518 kHz among NAVTEX stations avoided? -
ANSWER Transmissions scheduled on a time-sharing basis, power limited and
station assignment codes are geographically separated.
When do NAVTEX broadcasts typically achieve maximum transmitting range?
- ANSWER Middle of the night
What should a GMDSS Radio Operator do if a NAVTEX warning message is
received by contains too many errors to be usable? - ANSWER Do nothing.
Vital NAVTEX messages will be repeated on the next scheduled broadcast.
Which of these cannot happen when a paper model NAVTEX reciever runs out
of paper? - ANSWER The system will automatically change from recieving
MSI by NAVTEX to receiving it by SafetyNET so that no messages will be
lost.
Which of the following is the primary frequency that is used exclusively for
NAVTEX broadcasts internationally? - ANSWER 518 kHz
What is the transmitting range of most NAVTEX stations? - ANSWER
Typically 200-400 nautical miles (360-720 km).
How is a NAVTEX receiver programmed to reject certain messages? -
ANSWER By choosing a message category's single letter (A-Z) identifier and
then deselecting or deactivating.
How can reception of certain NAVTEX broadcasts be prevented? - ANSWER
The receiver can be programmed to reject certain stations and message
categories
