Coast Guard - Communications (AUXCOM)
Exam Questions With Correct Answers
A |single |complete |reversal |of |an |alternating |current.
Cycles
The |number |of |cycles |per |second |of |an |alternating |current.
Frequency
One |____ |equals |one |cycle |per |second.
Hertz |(Hz)
These |units |of |frequency |measurement |honor |Heinrich |Hertz, |an |early |pioneer |of |radio.
Radio |Frequency |Spectrum
Very |High |Frequency |(VHF)
30 |to |300 |MHz
What |is |the |typical |use |of |VHF?
TV, |FM |broadcasts, |air |traffic |control, |land |mobile, |police/fire, |navigational |aids, |marine |VHF |
radios
The |portion |of |the |electromagnetic |spectrum |between |3 |kHz |and |300 |GHz.
Radio |frequency |spectrum
What |frequencies |are |used |in |radio |communications?
30 |kHz |to |30,000 |MHz
Who |governs |frequency |use |by |Federal |agencies?
National |Telecommunications |and |Information |Administration |(NTIA)
What |does |NTIA |stand |for?
National |Telecommunications |and |Information |Administration
, Who |regulates |state, |local |government, |business, |and |private |frequency |use?
Federal |Communications |Commission |(FCC)
True |or |False: |Federal |agencies |may |not |use |the |non-fedral |frequencies |subject |to |agreement |
between |the |NTIA |and |the |FCC.
True
What |are |wavelengths |measured |in?
meters
The |size |or |magnitude |of |a |wave |measured |from |zero |to |its |peak |or |greatest |value.
Amplitude
What |are |the |two |voice |radio |communication
systems |available |to |marine |users |which |adequately |serve |dual |requirements |of |both |safety |
and |utility.
Single |Side |Band |(SSB)
VHF-FM
Ultra |High |Frequency |(UHF)
Radio |frequencies |between |300 |and |3,000 |MHz.
High |Frequency |(HF)
3 |MHz |- |30 |MHz
Frequency |range |of |VHF-FM |Marine
156 |- |162 |MHz
That |part |of |the |total |radiation |that |is |directed |toward |the |ionosphere.
Sky |Wave |or |ionospheric |wave
SSB |International |Calling |Frequency
2182 |kHz
VHF-F |International |Distress |and |Calling |Frequency
156.8 |MHz |(Channel |16)
What |is |the |FCC's |limit |on |SSB |transmitter |power?
Exam Questions With Correct Answers
A |single |complete |reversal |of |an |alternating |current.
Cycles
The |number |of |cycles |per |second |of |an |alternating |current.
Frequency
One |____ |equals |one |cycle |per |second.
Hertz |(Hz)
These |units |of |frequency |measurement |honor |Heinrich |Hertz, |an |early |pioneer |of |radio.
Radio |Frequency |Spectrum
Very |High |Frequency |(VHF)
30 |to |300 |MHz
What |is |the |typical |use |of |VHF?
TV, |FM |broadcasts, |air |traffic |control, |land |mobile, |police/fire, |navigational |aids, |marine |VHF |
radios
The |portion |of |the |electromagnetic |spectrum |between |3 |kHz |and |300 |GHz.
Radio |frequency |spectrum
What |frequencies |are |used |in |radio |communications?
30 |kHz |to |30,000 |MHz
Who |governs |frequency |use |by |Federal |agencies?
National |Telecommunications |and |Information |Administration |(NTIA)
What |does |NTIA |stand |for?
National |Telecommunications |and |Information |Administration
, Who |regulates |state, |local |government, |business, |and |private |frequency |use?
Federal |Communications |Commission |(FCC)
True |or |False: |Federal |agencies |may |not |use |the |non-fedral |frequencies |subject |to |agreement |
between |the |NTIA |and |the |FCC.
True
What |are |wavelengths |measured |in?
meters
The |size |or |magnitude |of |a |wave |measured |from |zero |to |its |peak |or |greatest |value.
Amplitude
What |are |the |two |voice |radio |communication
systems |available |to |marine |users |which |adequately |serve |dual |requirements |of |both |safety |
and |utility.
Single |Side |Band |(SSB)
VHF-FM
Ultra |High |Frequency |(UHF)
Radio |frequencies |between |300 |and |3,000 |MHz.
High |Frequency |(HF)
3 |MHz |- |30 |MHz
Frequency |range |of |VHF-FM |Marine
156 |- |162 |MHz
That |part |of |the |total |radiation |that |is |directed |toward |the |ionosphere.
Sky |Wave |or |ionospheric |wave
SSB |International |Calling |Frequency
2182 |kHz
VHF-F |International |Distress |and |Calling |Frequency
156.8 |MHz |(Channel |16)
What |is |the |FCC's |limit |on |SSB |transmitter |power?
