Skip to main content
IALA
COLREG
COLREG
IALA
Lights
Sounds
GMDSS
Language
EN
ES
CA
DE
FR
IT
PT
NL
EL
HR
PT-BR
Quick sprint
Sign in
Exam
1/25
25:00
A 'multi-frequency' MF/HF DSC distress attempt means:
A
Transmit simultaneously on VHF and UHF
B
Transmit the distress alert on a combination of MF 2187.5 kHz and the HF DSC distress frequencies to improve the chance of reception
C
Transmit on channel 16 voice in parallel
D
Only use the 8 MHz band