GMDSS Final UPDATED Exam Questions
and CORRECT Answers
MMSI Characteristics - CORRECT ANSWER - 9 digit code, maritime mobile service
identity
sea area A1 - CORRECT ANSWER - in range of a coast station with continuous dsc vhf
alerting
A2 - CORRECT ANSWER - in range of a coast station with continuous MF DSC alerting
A3 - CORRECT ANSWER - in range of a coast station with continuous HF DSC or Sat - c
alerting
A4 - CORRECT ANSWER - Polar regions - not A1, 2, or 3
VHF User Procedures - CORRECT ANSWER - Input channels not frequencies
Squelch - CORRECT ANSWER - Threshold for background noise (rf gain filter); too high
and you cant hear weak transmissions.
adjust squelch - CORRECT ANSWER - to adjust VHF, turn to a tiny bit above where
background static is audible. for MF/HF, turn squelch on or off.
NAVTEX Frequencies - CORRECT ANSWER - 518 (international) and 490 (local) Khz
NAVTEX TX/RX Range - CORRECT ANSWER - up to 400 nm (200nm - 400nm)
and CORRECT Answers
MMSI Characteristics - CORRECT ANSWER - 9 digit code, maritime mobile service
identity
sea area A1 - CORRECT ANSWER - in range of a coast station with continuous dsc vhf
alerting
A2 - CORRECT ANSWER - in range of a coast station with continuous MF DSC alerting
A3 - CORRECT ANSWER - in range of a coast station with continuous HF DSC or Sat - c
alerting
A4 - CORRECT ANSWER - Polar regions - not A1, 2, or 3
VHF User Procedures - CORRECT ANSWER - Input channels not frequencies
Squelch - CORRECT ANSWER - Threshold for background noise (rf gain filter); too high
and you cant hear weak transmissions.
adjust squelch - CORRECT ANSWER - to adjust VHF, turn to a tiny bit above where
background static is audible. for MF/HF, turn squelch on or off.
NAVTEX Frequencies - CORRECT ANSWER - 518 (international) and 490 (local) Khz
NAVTEX TX/RX Range - CORRECT ANSWER - up to 400 nm (200nm - 400nm)
