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GMDSS GOC HF Distress Frequency Flashcards

24 English flashcards for GMDSS GOC revision. Match the five HF distress DSC and voice pairs and catch mistakes in paper readouts.

Avtor Open Study Contributor

O tem kompletu

Practise the five HF distress frequency pairs used in GMDSS, the Global Maritime Distress and Safety System. Each pair links a digital selective calling (DSC) frequency to a radiotelephony (voice) frequency in the same band. The deck is for trainees revising for the General Operator’s Certificate (GOC) on paper or with simulated readouts.

Start by recalling both frequencies for HF4, HF6, HF8, HF12 and HF16. Then match DSC to voice and voice to DSC. The final cards ask you to read a band label, spot a mix-up between bands or modes, or check a decimal or unit. Related questions are spaced through the deck. Other bands, band selection and radio procedures are outside the scope of these frequency-matching exercises.

The frequency pairs were checked against the IMO distress frequency table and ITU Radio Regulations, Appendix 15. The questions were written independently with AI assistance, and the cover is an original AI-generated illustration. No examination questions, mark schemes or curriculum text were copied. CC0 applies to original material and generated media to the extent applicable rights exist.

Independent, unofficial study material by Open Study Contributor. See the official CEPT GOC syllabus for the broader exam scope. For certification requirements, consult the relevant national authority.

Kartice v tem kompletu

  1. Kartica 1

    Vprašanje

    What are the DSC and voice distress frequencies for HF8?

    Odgovor

    DSC 8414.5 kHz · voice 8291 kHz.

  2. Kartica 2

    Vprašanje

    What are the DSC and voice distress frequencies for HF4?

    Odgovor

    DSC 4207.5 kHz · voice 4125 kHz.

  3. Kartica 3

    Vprašanje

    What are the DSC and voice distress frequencies for HF12?

    Odgovor

    DSC 12577 kHz · voice 12290 kHz.

  4. Kartica 4

    Vprašanje

    What are the DSC and voice distress frequencies for HF6?

    Odgovor

    DSC 6312 kHz · voice 6215 kHz.

  5. Kartica 5

    Vprašanje

    What are the DSC and voice distress frequencies for HF16?

    Odgovor

    DSC 16804.5 kHz · voice 16420 kHz.

  6. Kartica 6

    Vprašanje

    Which HF distress DSC frequency pairs with voice 4125 kHz?

    Odgovor

    4207.5 kHz (HF4).

  7. Kartica 7

    Vprašanje

    Which HF distress voice frequency pairs with DSC 8414.5 kHz?

    Odgovor

    8291 kHz (HF8).

  8. Kartica 8

    Vprašanje

    Which HF distress DSC frequency pairs with voice 6215 kHz?

    Odgovor

    6312 kHz (HF6).

  9. Kartica 9

    Vprašanje

    Which HF distress voice frequency pairs with DSC 12577 kHz?

    Odgovor

    12290 kHz (HF12).

  10. Kartica 10

    Vprašanje

    Which HF distress voice frequency pairs with DSC 16804.5 kHz?

    Odgovor

    16420 kHz (HF16).

  11. Kartica 11

    Vprašanje

    Which HF distress DSC frequency pairs with voice 8291 kHz?

    Odgovor

    8414.5 kHz (HF8).

  12. Kartica 12

    Vprašanje

    Which HF distress voice frequency pairs with DSC 4207.5 kHz?

    Odgovor

    4125 kHz (HF4).

  13. Kartica 13

    Vprašanje

    Which HF distress DSC frequency pairs with voice 12290 kHz?

    Odgovor

    12577 kHz (HF12).

  14. Kartica 14

    Vprašanje

    Which HF distress voice frequency pairs with DSC 6312 kHz?

    Odgovor

    6215 kHz (HF6).

  15. Kartica 15

    Vprašanje

    Which HF distress DSC frequency pairs with voice 16420 kHz?

    Odgovor

    16804.5 kHz (HF16).

  16. Kartica 16

    Vprašanje

    A paper HF8 distress row shows DSC 8291 kHz and voice 8414.5 kHz. What is the error?

    Odgovor

    The labels are swapped. DSC is 8414.5 kHz and voice is 8291 kHz.

  17. Kartica 17

    Vprašanje

    A paper HF4 distress row shows 4207.5 kHz in both columns. Which column is wrong, and what belongs there?

    Odgovor

    The voice column should show 4125 kHz. The DSC entry is correct.

  18. Kartica 18

    Vprašanje

    An HF12 distress training readout shows DSC 12577.0 kHz and voice 12290.0 kHz. Do both frequencies match the HF12 distress pair?

    Odgovor

    Yes. DSC is 12577 kHz and voice is 12290 kHz. The trailing zeros leave the frequencies unchanged.

  19. Kartica 19

    Vprašanje

    An HF6 distress training readout lists DSC 6.312 MHz. What is that entry in kHz?

    Odgovor

    6312 kHz. One MHz equals 1000 kHz.

  20. Kartica 20

    Vprašanje

    A paper HF16 distress row shows DSC 16804.0 kHz and voice 16420 kHz. Which entry needs a correction?

    Odgovor

    The DSC entry should be 16804.5 kHz. The voice entry is correct.

  21. Kartica 21

    Vprašanje

    A training readout pairs DSC 8414.5 kHz with voice 4125 kHz. Do the two HF distress entries belong to the same band?

    Odgovor

    No. DSC 8414.5 kHz belongs to HF8 and voice 4125 kHz belongs to HF4.

  22. Kartica 22

    Vprašanje

    A paper HF12 distress log marks 12290 kHz as DSC. Which mode label belongs on that entry?

    Odgovor

    Radiotelephony (voice).

  23. Kartica 23

    Vprašanje

    An HF6 paper distress worksheet lists voice 6215 kHz. A second readout lists that field as 6.125 MHz. Do the displays agree?

    Odgovor

    No. 6215 kHz equals 6.215 MHz.

  24. Kartica 24

    Vprašanje

    A distress worksheet row lists DSC 16804.5 kHz and voice 16420 kHz with the band label blank. Which HF band label fits?

    Odgovor

    HF16 (the 16 MHz band).

Illustration of a pencil and a paper worksheet with five blue and orange pairs on a ship’s chart table.

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GMDSS GOC HF Distress Frequency Flashcards

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