AUXCOM EXAM QUESTIONS & ANSWERS
In communications nomenclature, the band named "very high frequency" covers what
frequency range?
a) 3 - 30 Hz
b) 30 - 300 kHz.
c) 30 - 300 MHz.
d) 3 - 300 MHz. - Answer -c) 30 - 300 MHz.
Express 2.182 MHz in kilohertz (kHz).
a) 2182 kHz.
b) 21.82 kHz.
c) 2.182 kHz.
d) 218.2 kHz. - Answer -a) 2182 kHz.
What is the typical range of VHF-FM radio communications? (page 5)(page 15)
a) Up to 25 miles, depending on antenna height.
b) Line of sight.
c) Handhelds, 1 - 2 miles.
d) All of the above. - Answer -d) All of the above.
What is a most important characteristic of the VHF-FM frequencies?
a) Free of interference and static.
b) Line of sight.
c) Only specific frequencies permitted.
d) All the above. - Answer -b) Line of sight.
What is the difference between Simplex and Duplex circuits?
a) Simplex circuits use one frequency for both send and receive.
b) Duplex circuits have separate send and receive frequencies.
c) There is no difference.
d) Both a and b. - Answer -d) Both a and b
Skip is most often found within what range of frequencies? (page 5)
a) 156 - 162 MHz
b) VLF frequencies
c) 2 to 30 MHz
d) 3 to 30 GHz - Answer -c) 2 to 30 MHz
What is the SSB Distress and Calling frequency?
,a) 2182 kHz
b) Channel 16
c) 156.8 MHz
d) Channel 13 - Answer -a) 2182 kHz
What is the VHF-FM marine calling and distress frequency?
a) 2182 kHz
b) Channel 16
c) 156.60 MHz
d) Channel 13 - Answer -b) Channel 16
The bridge tender will likely be listening on what channel?
a) Channel 16.
b) Channel 09.
c) Channel 12.
d) Channel 13. - Answer -d) Channel 13.
After calling a commercial vessel on Channel 16, what are some of the working
channels you could switch to?
a) Channel 68.
b) Channel 69.
c) Channel 71.
d) All of the above. - Answer -d) All of the above.
Why is Class D Citizens Band unreliable for boaters?
a) No radio watch maintained.
b) No broadcast of emergency information.
c) No communication with Coast Guard.
d) All the above. - Answer -d) All the above.
All ship radiotelephone stations using the 2-30 MHz marine band must maintain an
efficient listening watch on which frequency?
a) 2182 MHz
b) 2182 kHz
c) 2182 HZ
d) 2182 GHz - Answer -b) 2182 kHz
An efficient listening watch is required on which VHF-FM channel and under what
conditions?
, a) Channel 16 (156.8 MHz) if radio is on and not in use.
b) Channel 70 (156.525 MHz) for non-DSC equipped vessels.
c) Channel 68 (156.425 MHz) unless another channel is being used.
d) Channel 17 (156.850 MHz) unless another channel is being used.
c) Fifteen - Answer -a) Channel 16 (156.8 MHz) if radio is on and not in use.
When a station does not respond to a call sent three times at intervals of two minutes,
you are permitted to call again after how many minutes have elapsed?
a) Five
b) Ten
c) Fifteen
d) Twenty - Answer -c) Fifteen
What is the procedure to initiate a call on a ship's radiotelephone?
a) Listen to see if the channel is free.
b) make contact on the calling frequency.
c) switch to a working channel.
d) All of the above. - Answer -d) All of the above.
Is it always necessary to establish contact on a calling channel?
a) Yes, it is required.
b) No, if you know the other station is monitoring a working channel, it is okay to call
them on it.
c) No, it is not required.
d) None of the above. - Answer -b) No, if you know the other station is monitoring a
working channel, it is okay to call them on it.
What is the PRIMARY use of the inter-ship frequencies?
a) Talk about fishing conditions.
b) Safety of navigation.
c) Business requirements.
d) Docking procedures. - Answer -b) Safety of navigation.
After two ship stations have established contact on an inter-ship working frequency,
FCC regulations limit maximum duration of the communication to what time period?
a) No limit, talk as long as you want.
b) Three minutes.
c) Five minutes.
d) Fifteen minutes. - Answer -b) Three minutes.
In communications nomenclature, the band named "very high frequency" covers what
frequency range?
a) 3 - 30 Hz
b) 30 - 300 kHz.
c) 30 - 300 MHz.
d) 3 - 300 MHz. - Answer -c) 30 - 300 MHz.
Express 2.182 MHz in kilohertz (kHz).
a) 2182 kHz.
b) 21.82 kHz.
c) 2.182 kHz.
d) 218.2 kHz. - Answer -a) 2182 kHz.
What is the typical range of VHF-FM radio communications? (page 5)(page 15)
a) Up to 25 miles, depending on antenna height.
b) Line of sight.
c) Handhelds, 1 - 2 miles.
d) All of the above. - Answer -d) All of the above.
What is a most important characteristic of the VHF-FM frequencies?
a) Free of interference and static.
b) Line of sight.
c) Only specific frequencies permitted.
d) All the above. - Answer -b) Line of sight.
What is the difference between Simplex and Duplex circuits?
a) Simplex circuits use one frequency for both send and receive.
b) Duplex circuits have separate send and receive frequencies.
c) There is no difference.
d) Both a and b. - Answer -d) Both a and b
Skip is most often found within what range of frequencies? (page 5)
a) 156 - 162 MHz
b) VLF frequencies
c) 2 to 30 MHz
d) 3 to 30 GHz - Answer -c) 2 to 30 MHz
What is the SSB Distress and Calling frequency?
,a) 2182 kHz
b) Channel 16
c) 156.8 MHz
d) Channel 13 - Answer -a) 2182 kHz
What is the VHF-FM marine calling and distress frequency?
a) 2182 kHz
b) Channel 16
c) 156.60 MHz
d) Channel 13 - Answer -b) Channel 16
The bridge tender will likely be listening on what channel?
a) Channel 16.
b) Channel 09.
c) Channel 12.
d) Channel 13. - Answer -d) Channel 13.
After calling a commercial vessel on Channel 16, what are some of the working
channels you could switch to?
a) Channel 68.
b) Channel 69.
c) Channel 71.
d) All of the above. - Answer -d) All of the above.
Why is Class D Citizens Band unreliable for boaters?
a) No radio watch maintained.
b) No broadcast of emergency information.
c) No communication with Coast Guard.
d) All the above. - Answer -d) All the above.
All ship radiotelephone stations using the 2-30 MHz marine band must maintain an
efficient listening watch on which frequency?
a) 2182 MHz
b) 2182 kHz
c) 2182 HZ
d) 2182 GHz - Answer -b) 2182 kHz
An efficient listening watch is required on which VHF-FM channel and under what
conditions?
, a) Channel 16 (156.8 MHz) if radio is on and not in use.
b) Channel 70 (156.525 MHz) for non-DSC equipped vessels.
c) Channel 68 (156.425 MHz) unless another channel is being used.
d) Channel 17 (156.850 MHz) unless another channel is being used.
c) Fifteen - Answer -a) Channel 16 (156.8 MHz) if radio is on and not in use.
When a station does not respond to a call sent three times at intervals of two minutes,
you are permitted to call again after how many minutes have elapsed?
a) Five
b) Ten
c) Fifteen
d) Twenty - Answer -c) Fifteen
What is the procedure to initiate a call on a ship's radiotelephone?
a) Listen to see if the channel is free.
b) make contact on the calling frequency.
c) switch to a working channel.
d) All of the above. - Answer -d) All of the above.
Is it always necessary to establish contact on a calling channel?
a) Yes, it is required.
b) No, if you know the other station is monitoring a working channel, it is okay to call
them on it.
c) No, it is not required.
d) None of the above. - Answer -b) No, if you know the other station is monitoring a
working channel, it is okay to call them on it.
What is the PRIMARY use of the inter-ship frequencies?
a) Talk about fishing conditions.
b) Safety of navigation.
c) Business requirements.
d) Docking procedures. - Answer -b) Safety of navigation.
After two ship stations have established contact on an inter-ship working frequency,
FCC regulations limit maximum duration of the communication to what time period?
a) No limit, talk as long as you want.
b) Three minutes.
c) Five minutes.
d) Fifteen minutes. - Answer -b) Three minutes.
