問題一覧
1
With the squelch mode on the VHF__________
undesirable noise is suppressed
2
A polarisation of a radio wave is determined by a__________
position of the aerial
3
A VHF transmission range is mainly determined by__________
the height of the aerial
4
Which radio frequency channels are reserved for emergency communications?
2182 kHz/VHF channel 16
5
Wire antenna of 12 meters long is probably ___________.
A MF/HF‐antenna
6
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
7
With the squelch mode on the VHF:
Undesirable noises is suppressed
8
Which VHF channel should be used for internship navigation safety communications?
Ch.13
9
You are making ship‐to shore telephone calls on VHF. You should use the:
VHF‐FM service
10
What do you call the communication within the ships emergency organization or communication within the shore emergency response team?
Internal communication
11
Calls, announcement and conversations from one station to another on board should be as brief as possible and consistent with _______ .
Intelligibility
12
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
13
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
14
Vessel with an EPIRB, you must check _________.
the working of the charger and check the loaded condition of the battery
15
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
16
Which radio frequency channels are reserved for emergency communications?
2182 kHz/VHF channel 16
17
You are underway and hear a vessel continuously sounding her fog whistle. This indicates the Other vessel:
Is in distress
18
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
19
Within territorial waters the use of transmitters is prohibited. In general this does not apply for:
Inmarsat‐C equipment
20
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.
21
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
22
Acoustic feedback can arise__________
because the volume adjustment of the speaker is too high
23
When onboard channel 16 is used for a shore radioconnection, you always work__________.
simplex
24
Automatic amplifier regulation is used to__________
reduce distortion of weak incoming signals
25
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
26
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
27
With the use of INMARSAT and digital selective calling, distress alerts can be received:
With the NAVTEX
28
Which wave length applies to a frequency of 2000 kHz?
1500 meters
29
What is the maximum range of a VHF radio‐set from ship to ship at sea.
200 Nautical Miles
30
The legal type VHF antenna has a length of__________.
1 meter
31
The typical ?daylight frequencies? for long distance transmission are located in the__________
8 or 12 MHz‐band
32
The squelch on the control panel of a VHF‐sat serves to__________
adjust the threshold level for admitting signals and refusing noise
33
Before a mariphone is installed on board, __________
a license must be issued
34
Squelch mode serves to suppress__________
noise in speech‐breaks in an SSB‐signal
35
What is meant by frequency?
time lapse of vibrations
36
The sound‐level of the speaker on a MF/HF radiotelephony installation is adjusted through _________
AF‐Gain
37
What is the recommended connection between antenna and VHF?
coax cable connection
38
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
39
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
40
Long distance communication in the HF‐bands depends on__________
satellites
41
Which wave length applies to a frequency of 2000 kHz?
1500 meters
42
What is the maximum range of a VHF radio‐set from ship to ship at sea
200 Nautical Miles
43
Which radio frequency channels are reserved for emergency communications?
2182 kHz/VHF channel 16
44
The legal type VHF antenna has a length of__________.
1 meter
45
The typical “daylight frequencies” for long distance transmission are located in the__________
8 or 12 MHz‐band
46
You hear on radiotelephone the word “SECURITE” spoken three times. This indicated that
A message about the safety of navigation will follow
47
Wire antenna of 12 meters long is probably ___________.
A MF/HF‐antenna
48
The squelch on the control panel of a VHF‐sat serves to__________
adjust the threshold level for admitting signals and refusing noise
49
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
50
With the VHF on board there has to be:
A license