NOTES IN RADIOTELEPHONE

80 characters/min 18.The distress signal by radiotelephony is the *a.MAYDAY spoken three times c.. SECURITE spoken three times 21.The signal used by a ship in distress and/or station i

REVIEWER FOR SRROC EXAMINATION 1 MORSE CODES 16

REVIEWER FOR SRROC EXAMINATION

1 In Morse code signalling, a dot is taken as

*a 1 unit c 3 units

b 2 units d 5 units

2 In Morse signalling, a dah or a dash is equivalent to how many units?

a 2 units c 5 units

*b 3 units d 7 units

3 In the operating method of a communication equipment in which

transmission is made alternately is called

*a simplex operation c full duplex operation

b duplex operation d semi-duplex operation

4 The operating method that enables both operators to transmit

simultaneously is called

a semi-duplex c simplex

b full duplex *d duplex

5 It is found in the Very High Frequency (VHF) reciever to control the

signal output of the speaker.

a AF gain *c volume

b RF gain d squelch

6 It is found in the reciever of the single side band (SSB) to control

the signal output of the speaker.

*a AF gain c volume

b RF gain d clarifier

7 It is found on the VHF reciever to reduce the noise of the incoming

signal.

a AF/RF gain *c squelch

b volume d clarifier

8 It is found on the SSB reciever to reduce the noise of the incoming

signal.

a AF/RF gain c squelch

b volume *d clarifier

9 The service of the mobile station is placed under the supreme authority

of the

a Radio Officer c Owner of the ship

b Chief Officer *d Master of the ship

10.The maximum permissible departure by the center frequency of the

frequency bard occupied by an emission from the assigned frequency

tolerance This is how many percent of the authorized frequency?

a 0.0005% c 0.05%

*b 0.005% d 0.5%

11.To whom shall the contents of a message be divulged only?

a Radio Officer c Master of the ship

b Chief Officer *d Addressee

12.Calling or signals preparatory to non-emergency messages when made on the carrier frequency shall not

*a one minute c three minutes

b two minutes d five minutes

13.The worldwide safety calling and harbor control frequency

a 156.8 KHZ c 500 KHZ

*b 156.8 MHZ d 2182 KHZ

14.The International distress frequency for radiotelephony

a 156.8 KHZ c 500 KHZ

b 156.8 MHZ *d 2182 KHZ

15.The international distress frequency for radiotelegraphy

a 156.8 KHZ *c 500 KHZ

b 156.8 MHZ d 2182 KHZ

16.When using High Frequency (HF), voice radio communication is used

a radiotelephony *c 2182 KHZ

b radiotelegraphy d 156.8 MHZ

17.In transmitting emergency messages by radiotelephony,it shall not in general exceed a speed

a 14 WPM c 20 WPM

b 16 characters/min *d 80 characters/min

18.The distress signal by radiotelephony is the

*a.MAYDAY spoken three times c SECURITE spoken three times

b PAN PAN spoken three times d SEELONCE MAYDAY

19.The urgent signal by radiotelephony is the

a SEELONCE MAYDAY c SECURITE spoken three times

*b PAN PAN spoken three times d MAYDAY spoken three times

20.The safety signal by radiotelephony is the

a PAN PAN spoken three times c MAYDAY spoken three times

b SEELONCE MAYDAY *d SECURITE spoken three times

21.The signal used by a ship in distress and/or station in charge of

distress traffic in imposing radio silence

a SEELONCE DISTRESS c MAYDAY RELAY

*b SEELONCE MAYDAY d SEELONCE FEENEE

22.The signal used by other ships in the vicinity of the distress ship imposing radio silence if necessary

*a SEELONCE DISTRESS c MAYDAY RELAY

c SEELONCE MAYDAY d SEELONCE FEENEE

23.The signal to terminate radio silence when normal working may be resumed

a SEELONCE MAIDER *c SEELONCE FEENEE

b SEELONCE DISTRESS d PRUDONCE

24.The signal to terminate radio silence imposed when restricted working may be resumed

a SEELONCE DISTRESS c SEELONCE FEENEE

b SEELONCE MAYDAY *d PRU-DONCE

25.All stations who hear a distress signal shall-

a cease all transmissions regardless of the classification.

b continue transmissions of the frequency where distress traffic *c cease all transmissions capable of interfering with distress traffic.

d cease listening to the traffic and continue transmission.

26.Stations who hear a distress and is in the vicinity

*a acknowledge immediately the distress message.

b defer acknowledgement and give priority to SAR vessels.

c defer acknowledgement and priority to coastal stations.

d do not acknowledge unless specifically called.

27.Stations who hear a distress signal and in areas where communication with coastal stations is practicable

a acknowledge immediately.

b do not acknowledge unless called for.

*c defer acknowledgement and give priority to coastal stations.

d defer acknowledgement and give priority to nearer stations.

28.Stations who hear a distress signal and not in the vicinity

a not acknowledge and let nearer stations to acknowledge.

b acknowledge immediately and proceed to the disaster area.

*c defer acknowledgement and give priority to the nearer stations.

d acknowledge receipt and relay distress message.

29.Stations who hear a distress signal and a long distance away and the signal has not been acknowledge,

a cease from listening because she is too far.

b acknowledgement receipt and proceed to the assistance of distress ship.

c defer acknowledgement giving priority to nearer stations.

*d relay the distress message.

30.The signal used when relaying a distress message

a RELAY MAYDAY spoken three times

*b MAYDAY RELAY spoken three times

c DISTRESS RELAY spoken three times

d RELAY DISTRESS spoken three times

31.Call signs of land/fixed stations consist

*a two characters and one letter

b two characters and two letters

c two characters and one letter followed by four digits.

d two characters and two letters followed by two digits.

32.As far as possible, it is recommended that call signs of fixed stations consists

a two characters and two letters followed by not more than three digits *b two characters and one letter followed by two digits.

c two characters and three letters

d two characters and two letters

33.Call signs of the ship stations consists

a two characters and one letter.

*b two characters and two letters.

c two characters and three letters.

d two characters and four letters.

34.Call signs of aircraft stations consists

a two characters and one letter.

b two characters and two letters.

*c two characters and three letters.

d two characters and four letters.

35.Ampletude modulation, double sideband, single channel containing

analogue information, and telephony including soundbroadcasting is the meaning of which of the following classes of

a A1A c F3E

*b A3E d A3J

36.Under the new classification of emission, F3E

a frequency modulation,single channel containing digital information, telephony including soundbroadcasting.

b frequency modulation, single channel containing analogue information, morse code for aural reception.

*c frequency modulation,single channel containing analogue information, telephony including sound broadcasting.

d frequency modulations,double sideband containing analogue information, telephony including soundbroadcasting.

37.Under the new classification of emission, A1A

a amplitude modulation,single sideband,single channel containing

analogue information,telephony including soundbroadcasting.

b amplitude modulation,single sideband,single channel containing

digital information,telephony including soundbroadcasting.

c amplitude modulation,double sideband,single channel containing

digital information, morse code including soundbroadcasting.

*d amplitude modulation,double sideband,single channel containing

digital information, morse code for aural receptions.

38.Radio laws and regulations of the philippines apply to all vessels of

philippine register,engaged in coastwide trade

a ocean going vessels calling on philippine ports.

b cargo vessels with more than 300 gross tonnage.

c ships authorized to carry passengers.

*d vessels plying exclusively on rivers, lakes and bays.

39.Generally, messages by radiotelephony must be sent

*a plain language c dots and dashes

b coded form d morse code

40.Radio laws and regulations of the philippines are enforced by

a international telecommunication union

b national telecommunication union

*c national telecommunication commission

d inter-governmental consultative organization.

41.Except for safety messages transmitted at fixed times, the most

appropriate time to send safety signals should

a immediately before the communication silence period.

b during the three minutes silence period

*c towards the end of the first available silence period.

d during lull time of the silence period.

42.The radio station log if it does not contain distress messages received, shall be preserved for how many years after the last entry?

a one year c 3 years

*b two years d 4 years

43.The maximum power that is consummed by a radio transmitter is what percentage of its peak power rating?

a 100 *c 60/70/75

b 90 d 50

44.Who maintain the radio station log?

a master of the ship *c radio officer

b chief officer d chief bosun

45.Who is responsible for the transmission of radio messages?

*a master of the ship c radio officer

b chief officer d chief bosun

46.As a rescue ship approaches the scene during search and rescue, she

a continue listening on the distress frequency

*b make full use of any RDF facilities to locate any transmission from EPIRB.

c extend the search towards the direction of nearest land.

d extend the search towards the direction of current.

47.The call which have absolute priority over all other transmission *a distress c safety

b urgent d administrative

48.While at sea, the radio operator shall test the reserve/emergency

a monthly *c daily

b weekly d hourly

49.While at sea, the radiotelephone/radio operator shall test the

transmitter in

a daily c monthly

*b weekly d semi-anually

50.The maximum power output authorized to low power ship radiotelephone station

a 25 watts c 75 watts

*b 50 watts d 100 watts

51.The standard of training, certification and watchkeeping(STCW) for seafarers apply to those serving on board seagoing those serving on

a luxury liners c cargo vessels

b tankers *d warship/fishing vessels

52.The gross tonnage of cargo vessels that shall be fitted with

radiotelephone station unless fitted with radiotelegraph station

a 50 tons upward but less than 500 tons

b 500 tons upward but less than 1600 tons

*c 300 tons upward but less than 1600 tons

d 300 tons upward but less than 16000 tons.

53.latitude is expressed

*a four numerals preceeded by the letter L followed by N or S.

b four numerals preceeded by the letter N or S

c four or five numerals preceeded by letter L followed by N or S.

d four or five numerals preceeded the letter N or S.

54.Longitude is expressed

a four numerals preceeded by the letter G.

b four numerals followed by the letter G.

*c four or five numerals preceeded by the letter G followed by E or W.

d four or five numerals followed by the letter N or S.

55.Azimuth or bearing is expressed

a one or more numerals preceeded by the letter A.

b one or more numerals preceeded by the letter AB.

*c three numerals preceeded by the letter A.

d three numerals preceeded by the letter AB.

56.Date in signalled

a two numerals preceeded by the letter D.

b four numerals preceded by the letter D.

c six numerals preceded by the letter D.

d any of the above is correct.

57.Course is signalled

a one or more figures preceded by the letter C.

b one or more numerals followed by the lettter C.

*c three numerals preceded by the letter C.

d three figures followed by the letter C.

58.Distance in nautical miles is signalled

a one or more numerals preceded by the letter D.

*b one or more numerals preceded by the letter R.

c one or more numerals followed by the letter D.

d one or more numerals followed by the letter R.

59.Time is expressed in four figures preceded by the

*a T to indicate local time

b T to indicate greenwich time

c H to indicate local time

d Z to indicate local time.

60.One or more numerals following the letter S indicate speed

a knots per hour

*b nautical miles per hour

c kilometers per hour

d statute miles per hour

61.Single-letter signal BRAVO

a loading dagerous goods

b unloading dangerous goods

c carrying dangerous goods

*d all of the above are correct.

62.Single-letter OSCAR

a i am overloaded

b i am in overtime

*c manoverboard

d i am conducting manoverboard exercise

63.Single-letter signal KILO

*a i wish to communicate with you

b i wish to communicate with you by radiotelephony

c i wish to communicate with you by radiotelegraphy

d i wish to communicate with you on frequency 156.8 MHZ

64.Single-letter PAPA

a i need free pratique

*b personnel recall

c boat recall

d personnel are on liberty

65.Two-letter signal AC

a i intend to abandon my vessel

b i do not intend to abandon my vessel

c i must abandon my vessel

*d i am abandoning my vessel

66.Two-letter signal AE

a i am abandoning my vessel

*b i must abandon my vessel

c i intend to abandon my vessel

d i do not intend to abandon my vessel

67.Two-letter signal CB

*a i require immediate assistance

b i do not require assistance

c i cannot proceed without assistance

d i require tug assistance

68.Code signal CB6

*a i am on fire, i require immediate assistance

b i am sinking, i require immediate assistance

c i collided with surface craft, i require assistance

d i am aground, i require immediate assistance

69.The code signal for the phrase"I am preceeding to your assistance"

a AP c FP

*b CP d KP

70.The signal for the phrase "I am sinking"

a DS c PX

*b DX d TX

71.The signal code for the phrase "your distress signals are

a DE *c ED

b BE d EB

72.The signal code for the phrase "collided with a surface craft"

a CB6 *c HW

b HW6 d MW

73.The signal code for the phrase "i am on fire"

*a IT c IX

b IF d ID

74.The two-letter signal UR

a my estimated time of departure is _

*b my estimated time of arrival is

c my estimated time of completing loading is _

d my estimated time of completing unloading is

75.The signal code NC

a i am not in position to render assistance

b i am not in distress, i do not need assistance

*c i am in distress and need immediate assistance

d are you in distress and need immediate asssistance?

76.The [urpose of assigning call signs to radio stations

*a to provide positive identification

b to determine the point of registry

c to determine the place of installation

d to provide proper accounting of all radio stations.

77.In case of serious illness/injury at sea where there is no doctor

onboard and appears to be beyond the resources of the master, he

a insure the victim that he will be brought to the nearest hospital.

b deviate from his course and proceed to the nearest port.

c tell the victim not to worry.

*d seek medical advice via the radio.

78.Medical advice to ships at sea can be requested

a other ships in the area.

b the nearest coastal station.

*c medical officers from any coast guard station of public health services.

d any navy ships in the vicinity.

79.The medical signal code is found in

a ships medicine manual

*b international code of signal book