Element 7: GMDSS Radio Operating Practices

effective 8/01/2006

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7-A-048: On-scene Communications

7-48F1: Which of the following has been designated for “On-scene” communications in GMDSS?

Ch-16 on VHF radiotelephone and 2174.5 kHz using MF SITOR.

Ch-24

Ch-2182

Ch-70



7-48F2: Which of the following channels is designated as the VHF follow-on communications channel and is required in all portable survival craft equipment?

Ch-16

Ch-6

Ch-13

Ch-70



7-48F3: Which of the following frequencies have been designated for “On-scene” communications in the Global Maritime Distress and Safety System?

VHF Ch-16 and NBDP on 2174.5 kHz.

VHF Ch-22

HF radiotelephone on 21.820 MHz.

NBDP on 2177.0 kHz and VHF Ch-16.



7-48F4: Which of the following frequencies have NOT been designated for “On-scene” communications in the Global Maritime Distress and Safety System?

NBDP on 2182.0 kHz

VHF Ch-16

MF radiotelephony on 2182 kHz

None of these



7-48F5: “On-scene" communications would best be represented by?

NBDP on 2174.5

Sending DSC alert on VHF Ch-70

Using Inmarsat-C "hot-key" function

None of the above



7-48F6: For “On-scene” communications, vessels in Distress and SAR Aircraft should use?

VHF Ch-16, 4125 kHz J3E, 3023 kHz J3E

VHF Ch-70, 4125 kHz J3E, 5680 kHz J3E

VHF Ch-16, 4125 kHz F1B, 3023 kHz J3E

None of the above





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Element 7: GMDSS Radio Operating Practices
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7-A-049: VHF: Controls, Volume, Squelch, Power, Range