Question 02_05_2007

LRC Question-Answer QUESTIONNAIRE
version 14/05/2007
sfa
SBB & VHF General Questions
What is the typical range on 8 MHz (day / night)?
800 nm, day
1600 nm, night
What is the typical range on MF (day / night)?
2 MHz : 200 nm / 500 nm
What is the function of the AGC and what does it stand for?
1. Maintains a constant signal on a fading station
2. Automatic gain control
What is the function of the RF & AF gain?
RF gain: receiver sensitivity
AF gain: volume control
What is the difference between a duplex channel and a simplex channel?
duplex: receiving on one frequency and transmitting on an other
simplex: receiving and transmitting on the same frequency
How much power are we allowed to transmit on MF/HF?
MF: 400 W
HF: 1500 W
What is the function of the Clarity control?
Adjusts the station when it is slightly off frequency. (receiver fine tune)
What is the purpose of the TUNE button?
Tunes the ATU (Areal tuner unit)
What else can J3E be referred to on some radios?
SSB / USB
Which control adjusts a station that is slightly off frequency?
Clarity control
Commission d'examen
version 14/05/2007
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LRC Question-Answer QUESTIONNAIRE
version 14/05/2007
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GMDSS EPIRB, SART, NAVTEX and TEST General Questions
What does MRCC stand for and what is its function?
1. Maritime rescue coordination center
2. It coordinates search and rescue
What radio equipment should you have in a liferaft?
Epirb, portable VHF (Ch 6 & 16), SART
When in range of a shore station fitted with MF - DSC which GMDSS sea area are you in?
A2
In which publication do we find the frequencies of Coast Radio Stations / Coastguards?
Admiralty List of Radio Signals Vol.1
Define sea area A2, A3 & A4?
A2: range of MF-DSC excluding A1.
A3: range of HF-DSC / Inmarsat excluding A1 and A2.
A4: range of HF-DSC excluding A1 / A2 / A3.
Which category of Navtex messages should we receive?
A,B,D,L
NAVTEX is used for receiving what type of information?
Maritime Safety Information (MSI)
EPIRB works on which frequencies?
406 MHz, with 121.5 MHz (for homing) as an option.
What is the function of a SART?
Localizes a ship or survival craft in distress by radar.
What does a SART signal look like?
5nm : line of 12 dots on the radar screen
nearer : 12 arcs
close : 12 circles
What precaution should be taken before testing a SART?
1. That no ships with radar equipement are in vicinity
2. That the test is not made in a radar controlled aera
You see a SART signal on your Radar, what actions would you take by radio?
Set watch on channel 16 and relay ashore by any means
VHF channel 13 is designated for what purpose?
Bridge to bridge safety of navigation
Commission d'examen
version 14/05/2007
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LRC Question-Answer QUESTIONNAIRE
version 14/05/2007
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DSC GENERAL QUESTIONS
What are the DSC distress / radiotelephone frequencies on MF and HF?
MF:
HF:
RT
DSC
2182 kHz
2187,5 kHz
8291 kHz
8414,5 kHz
What means of identification is used by DSC?
MMSI
Do we receive an acknowledgement to DSC urgency calls?
No.
What information is transmitted in a DSC distress alert?
MMSI, position, nature of distress, time of position
Do you receive a DSC acknowledgement to DSC test calls?
Yes, from the coastguard.
When would you send a DSC acknowledgement?
When the alert repeats and there is no distress traffic to be heard
What type of DSC alert do we make for medical assistance?
Urgency DSC alert
What type of DSC alert do we make prior to sending a MAYDAY RELAY?
Distress relay
How often should your position be updated in the DSC unit?
At least every 4 hours
You receive a DSC distress alert on 2187,5 kHz, what actions would you take?
1. set watch on 2182 kHz RT
2. see if you are able to help
3. relay ashore by any means
What information should be sent in a radiotelephone distress message?
Mayday
this is
Ship's identification
Position
nature of distress
type of assistance needed
If you send a false DSC Distress Alert on VHF. What actions should you take?
go to channel 16 and make an "all station call" canceling your distress alert
Commission d'examen
version 14/05/2007
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LRC Question-Answer QUESTIONNAIRE
version 14/05/2007
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REGULATIONS and SOLAS General Questions
When making test transmission, how long should it last and what should be sent?
1. not more than 10 seconds
2. vessel ID
What means of identification can be used over the radio?
Ship name
Callsign
MMSI
What is the distress pro-word and who should authorise such transmission?
1. Mayday
2. person in charge of the boat
What R/T signal is used to indicate that a navigation message is about to be sent?
Securite
What pro-word is used to indicate that a medical message is about to be sent?
PAN PAN
Give an example of an Urgency radiotelephone call!
PAN PAN 3x
All stations 3x
this is
Ship's identification 3x
A MAYDAY message indicates what?
That there is a distress situation.
Give an example of a MAYDAY call!
Mayday 3x
this is
Ship's identification 3x
Which pro-words are used to impose radio silence during distress working?
1. Silence Mayday by the controlling station
2. Silence distress by the non-controlling station
Which pro-word is used at the end of normal working?
Out
Which pro-word is used to relay a distress message to an MRCC?
Mayday Relay
You are sailing is sea area A2 and you see a SART signal. What are your actions by radio?
Monitor CH16 and 2182 kHz
Relay ashore by any means.
Commission d'examen
version 14/05/2007
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LRC Question-Answer QUESTIONNAIRE
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SATELLITE General Questions
If you know a vessel's name where do you find its Inmarsat Idenfication Number?
ITU List of ship station (LIST V)
Which ALRS publication covers EGC SafetyNET?
Volume 5
Can you send a distress alert via Inmarsat C when not logged in?
Yes.
What are the 2 ways of sending a distress alert in the Inmarsat C system?
Designated/Undesignated
EGC stands for?
Enhanced Group Call.
How many Inmarsat satellite regions and Navareas exist?
4 regions
16 Navareas
Give an example of an Inmarsat C number!
425344200
Which GMDSS sea areas can you receive Inmarsat - C in?
A1 - A2 - A3
On Inmarsat - C, weather, SAR and Navigation messages are received via which system?
EGC SavetyNET
Which special access codes (SACs) are used for medical messages?
32 : advice
38 : assistance
Which special access code is used for Maritime Assistance?
39
When sending a medical message via Inmarsat C, which priority is used?
Routine
What information is sent in an Inmarsat C distress alert?
position
distress priority
Inmarsat ID
time of position
speed on course
nature of distress
An Inmarsat distress message is sent to whom and at what priority?
To the MRCC via the closest LES at distress priority.
How do you cancel a false Inmarsat C distress message?
Send a message at distress priority via the same LES as the false distress alert has been sent, cancelling
the distress message.
Commission d'examen
version 14/05/2007
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LRC Question-Answer QUESTIONNAIRE
version 14/05/2007
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You receive a distress relay for a vessel within your vicinity, what actions would you take?
Set watch on CH16 and 2182 kHz and inform MRCC of my position.
Why should you log out of Inmarsat - C before switching off?
To inform the NCS that you are closing down in order to avoid loosing messages
Why should you have the correct position in the Inmarsat - C terminal?
to send the correct position in Distress situation.
to receive the correct EGC messages for the area you are sailing in.
Commission d'examen
version 14/05/2007
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LRC Question-Answer QUESTIONNAIRE
version 14/05/2007
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LRC-Radiotéléphonie-Questions
If you cause interference with ship and or coastal stations what should you do?
Stop transmitting
If you require an urgent tow, what action would you take by radio?
Send an Urgency call (PAN PAN)
How often should a live test be done on MF or HF DSC?
Weekly.
If you see distress flares, what priority DSC alert do you have to send?
Distress relay
If an EPIRB is lost, stolen or you change ownership or vessel what should you do?
You should contact the licensing authority (ILR)
What pro-word is used to acknowledge a MAYDAY message?
RRR MAYDAY / RECEIVED MAYDAY
How often should your clock be checked with a time signal?
Daily.
Can you put a routine DSC alert out on 2187,5 kHz?
No.
Give an example of a radiotelephone Safety Call!
Securite 3x
All Stations 3x
this is
Ship's identification 3x
How often can you send a DSC routine call on VHF channel 70?
first alert then wait 5 minutes
second alert then wait 15 minutes
MF DSC ship to ship and shore to ship routine frequency is?
2177 kHz
What is the name of the ground station an EPIRB goes via?
Local User Terminal (LUT)
You send a false DSC distress alert on 2187,5 kHz. What actions should you take?
go to channel 2182 kHz and make an "all stations call" canceling your distress alert indicating your
MMSI number.
You see a buoy adrift from its mooring. What call would you make?
SAFETY CALL
You hear a call with no station ID, what do you do?
Nothing, wait until the message is repeated.
Commission d'examen
version 14/05/2007
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LRC Question-Answer QUESTIONNAIRE
version 14/05/2007
sfa
You hear a call to your vessel, but do not hear the ID of the calling station.Which pro-word
would you use?
Station Calling
Which piece of equipment uses the COSPAS / SARSAT system?
EPIRB
Which message has the higher priority, Routine, Safety, Medical or Navigation?
Medical
Which EPIRB works in the polar Regions of the world?
Cospas Sarsat
Which ALRS publication covers Ports & VTS?
Volume 6
Which ALRS publication covers NAVTEX broadcast times?
Volume 5
When testing a SART how long should the test last?
<10s
When sending a R/T test transmission what should you send?
NAME OF THE SHIP OR COASTGUARD 3X
THIS IS
SHIP'S IDENTIFICATION 3X
RADIO CHECK
OVER
What words are used to indicate the end of distress working?
SILENCE FINI
What methods of distress alerting are available in Sea Area A4?
HF DSC
Can channel 16 or 2182 kHz be used for routine traffic during distress working?
No.
What are your actions by radio when there is a man overboard?
Distress call
Silence distress is put out by whom and sent to whom?
1. by the non-controlling station
2. to all stations
Silence Mayday is sent by whom and to whom?
1. By the controlling station
2. To all stations
The HF DSC primary distress alerting frequency is?
8414.5 kHz
Commission d'examen
version 14/05/2007
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LRC Question-Answer QUESTIONNAIRE
version 14/05/2007
sfa
The R/T distress frequencies on MF and HFare?
MF: 2182 kHz
HF : 8291 kHz
What precaution do you take before working on antennas?
That there is no transmission going on.
The routine alerting MF DSC frequency to a Coast Radio Station is?
2189.5 kHz
SARTs and EPIRBs are tested how often?
Monthly
What daily, weekly and monthly checks should you perform?
Daily check:
DSC controller, Power sources, Printers, Clocks
Weekly check:
DSC life check, Power sources
Monthly checks:
EPIRB, SART, VHF handheld, Aerials
What frequency does NAVTEX work on and what is used for?
518 kHz (international), 490 kHz (national)
A terrestrial system for receiving Maritime Safety Information (MSI)
What information does a Coast Radio Station (CRS) require before making a link call?
Call sign, AAIC code, Telephone number
What is an EPIRB and what frequencies does in transmit on?
1. A secondary device of distress alerting within the GMDSS.
2. 406MHz and optionally on 121.5MHz as homing frequency.
What is the meaning of the word PRUDENCE?
Allows essential traffic during distress working
What is the MF DSC Safety & Distress frequency?
2187,5 kHz
Give an example of an MRCC, Group and Ship MMSI number!
MRCC :
002538745
Group :
025357841
Ship MMSI : 253784578
Vessels MMSI numbers are found in which publication?
ITU List of ship stations (List V)
Commission d'examen
version 14/05/2007
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