COMPETENCE 3

50問 • 2年前

Peter j Zuniega

通報

問題一覧

With the squelch mode on the VHF__________

undesirable noise is suppressed

A polarisation of a radio wave is determined by a__________

position of the aerial

A VHF transmission range is mainly determined by__________

the height of the aerial

Which radio frequency channels are reserved for emergency communications?

2182 kHz/VHF channel 16

Wire antenna of 12 meters long is probably ___________.

A MF/HF‐antenna

With the DCS format specified geographical area call besides a reference position the number of the full degree difference in longitude and latitude must be fed in:

Westerly and northerly direction

With the squelch mode on the VHF:

Undesirable noises is suppressed

Which VHF channel should be used for internship navigation safety communications?

Ch.13

You are making ship‐to shore telephone calls on VHF. You should use the:

VHF‐FM service

What do you call the communication within the ships emergency organization or communication within the shore emergency response team?

Internal communication

Calls, announcement and conversations from one station to another on board should be as brief as possible and consistent with _______ .

Intelligibility

What is/are the content of table #1 of radiotelephony procedures? I. Nature of distress in code from the International code of signals II. Phonetic alphabets and figure spelling III. Position in code from the International code of signals

ll only

What is/are the content of table #2 of radiotelephony procedures? I. Nature of distress in code from the International code of signals II. Phonetic alphabets and figure spelling III. Position in code from the International code of signals

III only

Vessel with an EPIRB, you must check _________.

the working of the charger and check the loaded condition of the battery

What are the basic rules in training communications? I. Know what to say II. Get your idea across. III. Trainees must know you

l and ll

Which radio frequency channels are reserved for emergency communications?

2182 kHz/VHF channel 16

You are underway and hear a vessel continuously sounding her fog whistle. This indicates the Other vessel:

Is in distress

What is/are the content of table #3 of radiotelephony procedures? I. Nature of distress in code from the International code of signals II. Phonetic alphabets and figure spelling III. Position in code from the International code of signals

l only

Within territorial waters the use of transmitters is prohibited. In general this does not apply for:

Inmarsat‐C equipment

You are approaching a port when you see three lights in a vertical line. The upper and lower are green and the middle white. What does this mean?

A vessel may proceed only when it has received specific orders to do so.

You receive via the 8 MHz a DCS distress alert. The received DCS message is however distorted. The MMSI as well as the position are illegible. After listening at the 8 MHz telephone distress frequency, nothing is heard. This is because:

First an acknowledgement of a coastguard station must be received via the 8MHz

Acoustic feedback can arise__________

because the volume adjustment of the speaker is too high

When onboard channel 16 is used for a shore radioconnection, you always work__________.

simplex

Automatic amplifier regulation is used to__________

reduce distortion of weak incoming signals

You received a distress alert on HF Radio. What should you do?

Wait three minutes and if no acknowledgement is heard from a coast station you should relay the alert

With a distress alert via an Inmarsat‐A terminal it is recommended to use the telex‐mode because:

All vessels in the Ocean Region concerned can read it

With the use of INMARSAT and digital selective calling, distress alerts can be received:

With the NAVTEX

Which wave length applies to a frequency of 2000 kHz?

1500 meters

What is the maximum range of a VHF radio‐set from ship to ship at sea.

200 Nautical Miles

The legal type VHF antenna has a length of__________.

1 meter

The typical ?daylight frequencies? for long distance transmission are located in the__________

8 or 12 MHz‐band

The squelch on the control panel of a VHF‐sat serves to__________

adjust the threshold level for admitting signals and refusing noise

Before a mariphone is installed on board, __________

a license must be issued

Squelch mode serves to suppress__________

noise in speech‐breaks in an SSB‐signal

What is meant by frequency?

time lapse of vibrations

The sound‐level of the speaker on a MF/HF radiotelephony installation is adjusted through _________

AF‐Gain

What is the recommended connection between antenna and VHF?

coax cable connection

What should you include in the body of a radio message seeking advice for a medical emergency at sea? I. the name and owner of the ship, its position and destination II. The patients name and next of kin III. The patients age, sex, nature of the emergency

I, II & III

With all the responsibilities and work his position entails, the Master needs the _____ from his staffs? I. Acceptance and recognition II. Respect and compliance III. Support

I, II & III

Long distance communication in the HF‐bands depends on__________

satellites

Which wave length applies to a frequency of 2000 kHz?

1500 meters

What is the maximum range of a VHF radio‐set from ship to ship at sea

200 Nautical Miles

Which radio frequency channels are reserved for emergency communications?

2182 kHz/VHF channel 16

The legal type VHF antenna has a length of__________.

1 meter

The typical “daylight frequencies” for long distance transmission are located in the__________

8 or 12 MHz‐band

You hear on radiotelephone the word “SECURITE” spoken three times. This indicated that

A message about the safety of navigation will follow

Wire antenna of 12 meters long is probably ___________.

A MF/HF‐antenna

The squelch on the control panel of a VHF‐sat serves to__________

adjust the threshold level for admitting signals and refusing noise

With the DCS format specified geographical area call besides a reference position the number of the full degree difference in longitude and latitude must be fed in:

Westerly and northerly direction

With the VHF on board there has to be:

A license

COMPETENCE 1