7-A-050: VHF: Channel System, Usage, & U.S.-International Channels
7-50G1:
A VHF frequency channel pair of TX 157.200 MHz and RX 161.800 MHz would most likely be:
Both a) and c) are correct
A Public Correspondence Coast Radio Station frequency.
Simplex
Duplex
7-50G2:
Which channel is utilized for the required bridge-to-bridge watch?
VHF-FM on Ch-13 in most areas of the continental United States.
DSC on Ch-70
VHF-FM on Ch-16
The vessel's VHF working frequency.
7-50G3:
While conducting routine communications using the wheelhouse VHF with a station 1 mile distant, your recommended power setting would be:
1 watt, day or night.
25 watts after dark.
25 watts during a clear sunny day.
1 watt using DSC at night.
7-50G4:
The USA-INT control on VHF units:
Changes selected international duplex channels to simplex channels for use in U.S. waters.
Selects duplex operations for U.S. coastal waters and simplex operations in non-U.S. waters, on the "alpha" channels.
Both of the scenarios above may be set up and selected by the operator.
None of the above
7-50G5:
The USA-INT control on VHF units:
Both a) and c) are true
Was made necessary by a desire for more simplex channels in the U.S.
Correctly set, will result in duplex operations in U.S. Coastal waters on the "alpha" channels.
Correctly set, will result in simplex operations in U.S. Coastal waters on the "alpha" channels.
7-50G6:
Proper and legal VHF operations require:
Both answers a) and c) are correct
The channel must be designated as valid for the nature or type of communications desired.
The correct bandwidth must be selected by the operator.
The power level must be appropriately chosen.
|
Color key:
|
|
● = Unseen
|
|
● = Weak
|
|
● = Review
|
|
● = Learned
|
|
● = Incorrect answer
|
