TRIAL RADIO EXAM 2
SECTION A: PRIORITY CALLS AND ALERTS
1 Which of the following is the correct form of distress message:
a Mayday SEAWITCH ABC1234 – on fire - 10 miles northeast Smoky Cape Light – abandoning ship – require immediate assistance
b SEAWITCH ABC1234 – Mayday - abandoning ship – require immediate assistance
c Mayday SEAWITCH ABC1234 - 10 miles northeast Smoky Cape Light – on fire - abandoning ship – require immediate assistance
d 10 miles northeast Smoky Cape Light – on fire - abandoning ship – require immediate assistance - Mayday SEAWITCH ABC1234
2 Which of the following is the correct expression for acknowledging a radiotelephone distress message:
a Mayday received
b Romeo your Mayday
c Mayday Romeo
d Received Mayday
3 In radiotelephony what priority signal may precede a ‘Man Overboard’ type message?
a The distress signal “Mayday”
b The urgency signal “Pan Pan”
c The safety signal “Security”
d None of the above, it would be a general call to all stations
4 A DSC Distress alert may only be sent on the authority of:
a The Master or Skipper
b Any crew member with a valid radio operators certificate
c The owner of the vessel
d The dedicated radio operator
5 The word SECURITE repeated three times indicates:
a Your boat has been holed and is taking water fast and you require immediate assistance
b The station about to transmit the message had information concerning the safety of navigation or is giving an important meteorological warning
c The station transmitting is about to pass a message to another boat concerning an injured person
d You wish to use the radio telegram service operated by Telstra
6 The station controlling distress communications considers complete silence is no longer required and restricted working may be resumed on the distress frequency. Which expression would the station use?
a Distress Prudonce
b Prudonce Seelonce
c Seelonce Prudonce
7 The two tone alarm signal received on any frequency indicates:
a A coast station is about to issue a weather forecast
b A safety message is to follow
c A distress call and message are about to follow
d A test transmission is about to follow
8 You have just broadcast the radiotelephony alarm signal, the distress call and message on 2182 kHz, but receive no reply, what do you do next?
a Immediately repeat the same signal on 2182 kHz
b Change to VHF Channel 67 and repeat the signal
c Wait until the next silence period
d Wait until the next scheduled contact with your shore base
9 The DSC distress alert should include:
a The name of the distressed vessel
b The position and time it was updated
c The distress vessels port of registration
d How many persons are on board the distress vessel
10 You receive a distress alert by DSC on the 2 MHz frequency, what do you do next?
a Immediately acknowledge the alert by DSC
b Standby on VHF Channel 16
c Scan all radiotelephony distress frequencies
d Standby on 2182 kHz
11 On a marine radio, the function of the squelch control is to:
a Increase the volume of the messages received
b Increase the clarity of weak signals
c Eliminate background interference
d Stop other stations cutting into a conversation
12 An EPIRB is which of the following:
a An emergency voice transmitter and receiver
b An emergency voice and direction finding transmitter
c A direction finding transmitter and receiver
d A beacon transmitter
13 A limited coast station about to transmit a gale warning by radiotelephony will use a priority signal. Which one ?
a The distress signal
b The urgency signal
c The safety signal
d Routine weather signal
14 Write the phonetic word for each of the following:
G, O, Q, U, X, Z, S, J, V, A
15 What word or phrase should always precede distress traffic?
b ALL STATIONS
d SEELONCE MAYDAY
16 What action would you take when you hear a distress call?
a Transmit “Seelonce Mayday” and wait for the next silence period
b Be prepared to write down in the radio log book any distress message that may follow
c Change the receiver to a working frequency
d Answer immediately giving your vessel’s, name, call sign and position
17 What would you do next after receiving a distress alert by VHF DSC?
a Immediately acknowledge the alert by DSC
b Monitor all the radiotelephony distress frequencies
c Standby VHF Channel 16, prepared to write down any signals heard
d Standby on 2182 kHz, prepared to write down any signals heard
18 If an operator transmits a digital selective call distress alert by mistake, what is the first action that should be taken?
a Advise the nearest coast station of the mistake
b Transmit an all-stations DSC distress cancellation alert
c Transmit an all-stations DSC safety alert
d Switch off the transceiver to cancel automatic repeats of the distress alert
19 Which of the following is correct?
a A distress message may be sent only on 2182 kHz during a silence period
b A distress message may be sent on any frequency at any time
c A distress message may be only be sent on 2182, 27.88 and Channel 16
d A distress massage may only be sent during a silence period on any frequency
20 Pan Pan is a call to announce
a Distress traffic after the initial Mayday call
b Urgent message to follow
c Navigational warning to follow
d A French conversation will follow
21 The documents which must be carried aboard all vessels with regard to radio operation are:
a Radio equipment licence, radio operator’s licence, log book of radio traffic, SMA operator’s handbook
b Ship’s log, radio operator’s licence, equipment manuals, telegram register
c Radio Equipment licence, radio operator’s licence, Ship Master’s Licence, Instruction Manual
22 Which of the following frequencies is an international distress and calling frequency?
c VHF Ch 63
23 Which of the following is an international supplementary distress and calling frequency on VHF?
a Ch 73
b Ch 71
c Ch 67
d Ch 16
24 Which is a digital selective calling distress frequency?
25 When a ship and a coast or limited coast station are communicating, which station has the right to choose frequencies or transmission time?
a Coast Station
b Ship Station
c Arranged by mutual agreement
d Either station
26 With regard to radio telephone messages a limited Coast Station is:
a Permitted to charge by the minute for radio telephone messages
b Not permitted to charge for such messages
c Permitted to charge by the word for such messages
d Not permitted to accept such messages
27 What action would you take if you received a digital selective calling urgency alert?
a Tune the radio to the associated radiotelephony channel or frequency
b Acknowledge the alert by digital selective calling
c Acknowledge the alert by radiotelephony
d Continue listening on the DSC frequency
28 How are ship and coast or limited coast stations identified using DSC techniques?
a By the stations radiotelephony call sign
b By the stations MMSI
c By the stations radiotelephony call sign and name
d By the stations official name
29 What is the urgency signal repeated three times?
a Pan Pan
c Save me
30 A station controlling distress traffic may use the word ‘PRUDONCE’ to indicate that:
a Only vessels assisting the vessel in distress may transmit messages
b Complete silence is no longer necessary and restricted working may be resumed
c Normal working traffic may be resumed but messages should be kept short
d All vessels not involved in the distress situation should use supplementary calling frequencies
31 The radio power supply is generally:
a Pure alcohol
b Sulphuric acid / lead battery
c Hydrochloric acid / lead battery
c The motor of the boat
32 Your receiver is working normally, but when you press the transmit button everything ‘dies’ including dial lights etc. Which of the following is the most likely cause?
a Blown fuse
b Faulty aerial (antenna)
c Battery almost discharged
d Broken power leads
33 When you switch on, dial lights operate but both transmitter and receiver sections of your set are ’dead’. Which of the following is the most likely cause
a Faulty aerial (antenna)
b Faulty receiver
c Faulty transmitter
d Blown fuse
34 If there are no lights, no receiver noise and no transmitter output, the problem would most likely be:
a Battery almost flat
b Faulty microphone
c Fuse Blown
d Faulty earth
35 If you receive a shock from your radio when transmitting on your MF/HF set, the problem would be:
a Faulty microphone
b Intermittent power supply connections
c Faulty earth
d Reversed polarity of the power supply
36 Your radio fuse has blown. Which of the following is the correct action:
a Wrap the fuse in aluminium foil and replace it
b Put a piece of fine wire across the fuse terminals
c Replace with a fuse of the same size
d Replace with a slightly smaller fuse
37 If the battery plates are not covered with electrolyte (liquid), which of the following would you add?
a Salt water
b Sulphuric acid
c Distilled water
d Acid and water mixed
38 Which of the following would be the most likely cause of one cell of a battery needing to be topped up more often than the others?
a Not getting enough charge
b Getting too much charge
c Cell stronger than the others
d Cell breaking down
39 Who is responsible for the coordination of all search and rescue of small vessels in inshore waters?
a Australian Search and Rescue (AusSAR)
b Australian Maritime Safety Authority
c The nearest Volunteer Marine Rescue Organisation
d State and Territory Polices
40 What is the function of the Antenna Tuning Unit (ATU) on a MF/HF set?
a Adjusts the ‘electrical’ length of the antenna to achieve maximum power output on different frequencies
b Improved the quality and clarity of incoming signals
c Minimises the effect of loud static on received signals
d Adjusts the ‘physical’ length of the antenna to achieve maximum power output on different frequencies
41 The contamination of a battery with salt water will cause it to give off which of the following gasses?
a Sulphur dioxide
42 A battery being charged will give off which gas?
a Sulphur dioxide
43 Which of the following is the correct hydrometer reading for a fully discharged battery?
44 Two 12 volt batteries connected in parallel will produce which of the following voltages:
a 12 volts
b 24 volts
c 6 volts
d 18 volts
45 The general condition of a battery and its ability to supply current over a period of time is best measured by:
a Calling another station for a radio check
b Measuring the specific gravity of each cell
c Checking the height of the electrolyte in each cell
d Starting the boat engine
46 Your radio receiver ‘crackles’ and incoming messages are broken. Other stations report your transmitted signal is broken and hard to read. Which of the following is the likely cause of the problem?
a Power leads frayed or broken
b Poor earth connection
c Antenna broken or broken and contaminated insulators
d Press to talk switch faulty
47 Your radio is receiving incoming messages clearly but you are unable to get a reply to your transmissions. Which of the following is the most likely cause of the problem
a Broken antenna lead
b Faulty microphone
c Discharged or defective battery
d Blown fuse
48 Your radio receiver operates intermittently and dial lights are flickering. Which of the following is the most likely cause of the problem?
a Loose or corroded battery terminals
b Faulty press to talk switch
c Broken power connecting cables
d Fracture inside the whip antenna
49 A EPIRB can only be tested:
a By activating the test switch
b Inside the hull of your vessel
c With the permission of the nearest coast or limited coast station
d With the permission of local police
50 Fine tuning of incoming signals on SSB can be achieved by adjusting:
a The squelch control
b The volume control
c The clarifier control
d The RF gain control
51 Generally speaking what determines the range of VHF marine communications over an all-water path?
a It is achieved by ionospheric ‘ducting’
b The part of radio energy travelling by sky waves
c The combined line of sight distance of each station
d The part of radio energy travelling by both sky and ground waves
52 Secrecy or confidentiality does not apply to which of the following?
a Distress broadcasts
b Telephone calls
c Received personal crew emails
d Transmitted private telephone calls
53 What MF frequency is available for inter ship routine or general communications?
a 2182 kHz
b 2201 kHz
c 2638 kHz
d 2524 kHz
54 Which of the following services do Australian Coast Radio Stations provide?
a Access to the public network services
b Radiotelephony on the 8 MHz band
c HF radiotelephony distress and safety services
d Continuous automated watch of HF DSC frequencies
55 What mode is required for all HF marine radiotelephony transmissions?
56 What frequency or channel are Maritime Safety Information messages broadcast on?
a The distress, urgency and safety frequencies
b On a working frequency or channel
c On a telephony frequency or channel
d On a DSC frequency
57 What information is always contained in a DSC alert?
a Name of the coast station being called
b Working frequency for further communications
c Transmitting station identity
d Type of radio transmitter being used
58 On the screen of a Marine ‘X’ Band 3cm Radar what would a line of 12 blips indicate?
a A Racon beacon
b A cray pot marker
c An EPIRB
d An activated SART
59 What information is included in a 406 MHz EPIRB transmission?
a The serial number
b The unique identifier
c The name of the owner
d The manufacturer
60 How are the 121.5/243 MHz EPIRB signals detected?
a By aircraft only
b By satellites only
c By aircraft and satellites of the COSPAS/SARSAT system
d By Inmarsat only
61 In all Australian waters on what frequencies or channels is it customary to observe silence periods on?
a 2638 kHz and VHF Channel 72
b 2182 kHz only
c 2182 kHz and VHF channel 16 only
d Either 2182, 4125, 6215, 8291, 12290, 16420 kHz and/or VHF Channel 16
62 What VHF Channel may be used for co-ordinating search and rescue communications between vessels and aircraft?
a Channel 70
b Channel 67
c Channel 16
d Channel 06
63 What is the general rule for use of MF/HF frequencies?
a They should not be used during hours of darkness
b The higher the frequency the greater the communications distance
c The lower the frequency the greater the communications distance
d They are effective only for very short range communications