Communications Flashcards
The ship station license for your radio telephone is valid for
10 years
When sending and receiving messages on the marine radio, confusion over unusual words can be avoided by using the
Standard phonetic alphabet
One method of reducing the length of radio transmissions without distorting the meaning of your words is by using
Procedure words
You are monitoring VHF channel 16 when you receive a call to your vessel, TEXAS PRIDE. What is the proper way to answer this call?
“This is TEXAS PRIDE, WSR 1234, reply channel 10.”
When do you use your FCC call sign when transmitting on channel 16?
Always at the beginning and ending of a transmission
What is the MOST important thing you should do before transmitting on a marine radio?
Monitor the channel to insure that it is clear
When communicating on the radiotelephone using plain English, what procedure word indicates the end of my transmission and that a response is necessary?
Over
You are communicating on the radiotelephone using plain English. Which procedural word (proword) indicates that you have received another vessels transmission?
Roger
When using the International Code of Signals to communicate, the end of a radiotelephone transmission is indicated by the signal
AR
You are calling another vessel by radiotelephone using the International Code of Signals. He responds with the words “Alpha Sierra”. This indicates that
He cannot accept traffic immediately
What would be used to call all stations in your vicinity by radiotelephone ?
Charlie Quebec
You wish to communicate by radiotelephone with a foreign vessel using the International Code of Signals. This is indicated by the signal
“Interco”
If you receive the signal over radiotelephone of “Romeo Papa Tango” while using the International Code of Signals, you should
Repeat your last transmission
A call between any two ship stations on a intership working frequency shall have a maximum duration of
3 minutes
Routine radio communications should be no more than
Three minutes
You have just tried calling another vessel on the VHF and they have not replied. How long should you wait before calling that station again?
Two minutes
How should the number “1” be pronounced when spoken on the radiotelephone ?
OO-NAH-WUN
You are communicating by radiotelephone using the International Code of Signals. What is the correct method of sending the group 1.3?
“Unaone decimal terrathree”
How should the number “2” be pronounced when spoken on the radio telephone?
BEES-SOH-TOO
How should the number “3” be pronounced when spoken on the radio telephone?
TAY-RAH-TREE
How should the number “4” be pronounced when spoken on the radio telephone?
KAR-TAY-FOWER
How should the number “5” be pronounced when spoken on the radio telephone?
PAN-TAH-FIVE
How should the number “6” be pronounced when spoken on the radio telephone?
SOK-SEE-SIX
How should the number “7” be pronounced when spoken on the radio telephone?
SAY-TAY-SEVEN
How should the number “9” be pronounced when spoken on the radio telephone?
NO-VAY-NINER
How should the letter “D” be pronounced when spoken on the radio telephone?
DELL TAH
How should the letter “I” be pronounced when spoken on the radio telephone?
IN DEE AH
How should the letter “O” be pronounced when spoken on the radio telephone?
OSS CAH
How should the letter “Q” be pronounced when spoken on the radio telephone?
KEH BECK
How should the letter “R” be pronounced when spoken on the radio telephone?
ROW ME OH
How should the letter “T” be pronounced when spoken on the radio telephone?
TANG GO
How should the letter “V” be pronounced when spoken on the radio telephone?
VIK TAH
How should the letter “W” be pronounced when spoken on the radio telephone?
WISS KEY
How should the letter “Z” be pronounced when spoken on the radio telephone?
ZOO LOO
The height of a VHF radio antenna is more important than the power output wattage of the radio because
VHF communications are basically “line of sight”
VHF channel 6 is used exclusively for what kind of communications?
Inter-vessel safety and search and rescue
Marine Operators, when calling a ship on VHF-FM radiotelephone, normally call on channel
16
On a survival craft VHF radio precautions shall be taken to prevent the inadvertent selection of which channel
16
Which VHF channel should you avoid using as a working channel?
16
All VHF marine band radios operate in the simplex mode which means that
Only one person may talk at a time
You are making ship-to-shore calls on VHF. You should use the
VHF-FM service
If you know that the vessel you are about to call on the VHF radio maintains a radio on both the working and the calling frequencies, which frequency should you call on?
Working frequency
When making VHF radio calls to nearby stations, what level of transmitting power should you use?
Low power
What is the maximum power allowed by the FCC for VHF-FM radio transmissions?
25 watts
You are making a telephone call ship-to-shore using the VHF-FM service. You can tell the working channel is busy if you hear
Speech
Signaling tones
A busy signal
What is the average range of vessel-to-vessel VHF-FM radio communications?
15 to 20 miles
What is the expected range of a VHF radio transmission from a vessel to a shore station?
About 20 miles
The reception of weak radio signals may be improved by “opening up” the squelch control. What is the normal setting of the squelch control ?
Just past the point where background noise is cut off
The range of a SSB transmission is MOST affected by
The frequency band selected and time of day or night
What time of day would an SSB radio have the longest transmitting range?
During darkness
The unit of duration of a dash in Morse Code is
Three times the length of a dot
The standard rate of signaling by flashing light is
Forty letters per minute
The “call” part of a signal by flashing light is made by the general call or by
The identity signal of the station called
A message by flashing light consists of the call, the identity, the text, and the
Ending
A message by flashing light consists of the call, the text, the ending, and the
Identity
A message by flashing light consists of the call, the identity, the ending, and the
Text
What is the International Code signal for a decimal point between figures using flashing light ?
AAA
What is the International Code signal for calling an unknown station using flashing light?
AA AA
When signaling by flashing light, the signal “C” should be used to indicate a(n)
Affirmative statement
You have called another vessel by flashing light and he has answered your call properly. You now send your call sign “DE KLIS”. He should respond with
DE KLIS
When signaling by flashing light you make an error. You should send
The erase signal then continue the message with the last correctly spelled word
When signaling by flashing light, a correctly received repetition of a signal is acknowledged by the signal
OK
In a message sent by flashing light, what group of letters will direct the receiver of a message to repeat the transmission back to the sender?
RPT
The groups “AA” and “AB” are used in conjunction with what other group in signaling by flashing light?
RPT
Which signal given by flashing light changes a statement into a question?
RQ
If a receiving station cannot distinguish a signal sent by a flag hoist it should
Keep the answering pennant at the dip
Signaling by flag hoist is completed by the vessel hoisting the
Answering pennant
A vessel is signaling to you by flag hoist, and the answer pennant is hoisted close-up. You should
Expect no further flag hoists and secure from signaling
A warship indicates that it wishes to communicate with a merchant ship by hoisting
The code pennant, and keep it flying during the entire communication
The flag hoist 1.33 would be sent as
1, answer pennant, 3, second substitute
The flag hoist 62.2 would be sent as pennant 6, pennant 2,
Answering pennant, second substitute
If you wanted to ask a nearby vessel if he had a doctor on board, you would hoist the flag signal
AM
A vessel is flying the signal ““BJ-1” from her starboard halyard. The signal means
“an aircraft is circling over an accident”
You are signaling by flag hoist using the International Code of Signals. You wish to send the signals CL and IW and have them read in that order. What would ensure this ?
Hoist CL tackline IW
What is the correct interpretation of the flag hoist F 2 1 3 second substitute ?
F2131
What is the correct interpretation of the flag hoist G, 4, 2, 1, first substitute?
G4214
Several vessels are at anchorage. You wish to communicate with the vessel bearing 046*T from you but do not know the vessels call letters. Which flag hoist should NOT be used to establish communications?
RQ A046
While using the International Code of Signals, if the receiving station can distinguish the flag signal of the transmitting station, but cannot understand the meaning of it, the station can hoist the flag signal
ZL
A vessel in distress should send by radiotelephone the two tone alarm signal followed immediately by the
Spoken words “Mayday, Mayday, Mayday”
The VHF radiotelephone calling/safety/distress frequency is
156.8 MHz (channel 16)
The national distress, safety, and calling frequency is channel
16