USCG Exam PracticeGMDSS and VHF distress procedures
Under 33 CFR §87.01, a DSC distress alert may be transmitted on MF/HF on which of the following frequencies?
- A. 2182 kHz
- ✓ 4207.5 kHzCorrect
- C. 156.8 MHz
- D. 156.525 MHz
Why B is correct
33 CFR §87.01(l)(ii) lists the authorized MF/HF DSC distress frequencies as 2187.5 kHz, 8414.5 kHz, 4207.5 kHz, 6312 kHz, 12577 kHz, and 16804.5 kHz. 2182 kHz is the voice distress frequency, not a DSC channel, and 156.8 MHz is VHF Channel 16 voice.
Cited:33 CFR §87.01