3-N-085: VHF
3-85N1:
What is the channel spacing used for VHF marine radio?
25 kHz.
10 kHz.
12.5 kHz.
20 kHz.
3-85N2:
What VHF channel is assigned for distress and calling?
16
70
21A
68
3-85N3:
What VHF Channel is used for Digital Selective Calling and acknowledgement?
70
16
21A
68
3-85N4:
Maximum allowable frequency deviation for VHF marine radios is:
+/- 5 kHz.
+/- 15 kHz.
+/- 2.5 kHz.
+/- 25 kHz.
3-85N5:
What is the reason for the USA-INT control or function?
It changes some channels that are normally duplex channels into simplex channels.
It changes channels that are normally simplex channels into duplex channels.
When the control is set to “INT” the range is increased.
None of the above.
3-85N6:
How might an installer verify correct GPS sentence to marine DSC VHF radio?
Look for latitude and longitude, plus speed, on VHF display.
Press and hold the red distress button.
Look for GPS confirmation readout.
Ask for VHF radio check position report.
|
Color key:
|
|
● = Unseen
|
|
● = Weak
|
|
● = Review
|
|
● = Learned
|
|
● = Incorrect answer
|
