Which of the following has been designated for "On-scene" communications in GMDSS?

(D). Ch-16

47 CFR § 80.1077 On-scene communications:

VHF  Ch.16 156.8 MHz.
MF   Radiotelephony 2182 kHz.
NBDP 2174.5 kHz.

See Code of Federal Regulations Title 47 Chapter I Subchapter D Part 80 Subpart W § 80.1077 Frequencies. The frequencies used in the Global Maritime Distress and Safety System

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Which of the following channels is designated as the VHF follow-on communications channel and is required in all portable survival craft equipment?

(A). Ch-16

47 CFR § 80.1077 Survival craft:

VHF radiotelephony   {Ch 16} 156.8 MHz and
          156-174 MHz frequency

9 GHz radar transponders   9200-9500 MHz.

See Code of Federal Regulations Title 47 Chapter I Subchapter D Part 80 Subpart W § 80.1077 Frequencies. The frequencies used in the Global Maritime Distress and Safety System

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Which of the following frequencies have been designated for "On-scene" communications in the Global Maritime Distress and Safety System?

(B). VHF Ch-16 and SITOR (NBDP) on 2174.5 kHz.

47 CFR § 80.1077 On-scene communications:

VHF  Ch.16 156.8 MHz.
MF   Radiotelephony 2182 kHz.
NBDP 2174.5 kHz.

See Code of Federal Regulations Title 47 Chapter I Subchapter D Part 80 Subpart W § 80.1077 Frequencies. The frequencies used in the Global Maritime Distress and Safety System

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Which of the following frequencies have NOT been designated for GMDSS "On-scene" or SAR communications?

(C). SITOR (NBDP) on 2182.0 kHz

The SITOR (NBDP) is NOT 2182.0 kHz, but 2174.5 kHz.

47 CFR § 80.1077 On-scene communications: VHF  Ch.16 156.8 MHz.
MF   Radiotelephony 2182 kHz.
NBDP 2174.5 kHz.

See Code of Federal Regulations Title 47 Chapter I Subchapter D Part 80 Subpart W § 80.1077 Frequencies. The frequencies used in the Global Maritime Distress and Safety System

Designated for GMDSS "On-scene" or SAR communications:

• VHF Ch-16
  
• MF radiotelephony on 2182.0 kHz
  
• HF radiotelephony on 4125.0 kHz
  

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"On-scene" communications would best be represented by?

(C). SITOR (NBDP) on 2174.5 kHz

47 CFR § 80.1077 On-scene communications:

VHF  Ch.16 156.8 MHz.
MF   Radiotelephony 2182 kHz.
NBDP 2174.5 kHz.

See Code of Federal Regulations Title 47 Chapter I Subchapter D Part 80 Subpart W § 80.1077 Frequencies. The frequencies used in the Global Maritime Distress and Safety System

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For "On-scene" communications, vessels in Distress and SAR Aircraft should use?

(D). VHF Ch-16, 4125 kHz J3E, 3023 kHz J3E

The wrong answers have elements of the correct answer. Just remember 16, 4125, and three other elements have "3" in them. Or, 16, 12, 3, 3, 3. (4+1+2+5)=12

47 CFR § 80.1077 On-scene communications:

VHF  Ch.16 156.8 MHz.

See Code of Federal Regulations Title 47 Chapter I Subchapter D Part 80 Subpart W § 80.1077 Frequencies. The frequencies used in the Global Maritime Distress and Safety System

§ 80.369 Distress, urgency, safety, call and reply frequencies.

Channel 421: Ship transmit 4125 kHz Coast transmit 4417 kHz

The frequencies 4125 kHz, 6215 kHz, 8291 kHz, 12290 kHz, and 16420 kHz are also available on a simplex basis for distress and safety traffic, see paragraph (b) of this section.

See Code of Federal Regulation, Title 47 Chapter I Subchapter D Part 80 Subpart H Radiotelephony for § 80.369 Distress, urgency, safety, call and reply frequencies.

§ 80.1077 Frequencies.

On-scene, including search and rescue 156.8 MHz,
121.5 MHz5, 123.1 MHz 156.3 MHz, 2182 kHz,
3023 kHz, 4125 kHz, and 5680 kHz6.

See Code of Federal Regulation, CHAPTER I - Subchapter D PART 80 Subpart W - Global Maritime Distress and Safety System (GMDSS). - General Provisions Title 47 - Telecommunication

J3E emission type propagates data using a radio wave in a single analog channel.

See Wikipedia article on Types of radio emissions

§ 80.207 Classes of emission.
Radio frequency range 1605 kHz-27500 kHz includes emission modes of H3E, J3E, R3E

See Code of Federal Regulations, Title 47 - Telecommunication. Chapter I Subchapter D PART 80 Subpart E - General Technical Standards § 80.207 Classes of emission

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