GMDSS. FCC Test 30

Proper and legal VHF operations require:

Both answers a
The power level must be appropriately chosen.
The correct bandwidth must be selected by the operator.
The channel must be designated as valid for the nature or type of communications desired.

The effectiveness of VHF communications is maximized by:

While conducting routine communications using the wheelhouse VHF with a station 1 mile distant, your recommended power setting would be:

The USA-INT control on VHF units:

Selects Duplex operations for U.S. coastal waters and Simplex operations in non-U.S. waters on the 'alpha' channels.
None of the above.
Both of the scenarios above may be set up and selected by the operator.
Changes selected international duplex channels to simplex channels for use in U.S. waters.

The USA-INT control on VHF units:

Correctly set, will result in Duplex operations in U.S. Coastal waters on the 'alpha' channels.
Both a
Correctly set, will result in Simplex operations in U.S. Coastal waters on the 'alpha' channels.
Was made necessary by a desire for more simplex channels in the U.S.

Describing VHF transmissions as 'line of sight' means:

The normal transmission range to a coast station is approximately 25 NM.
Vessel antenna height will affect the radius of propagation.
VHF communications are effective only with nearby stations within visual range of the bridge.
Both b and c are true.

Which channel is utilized for the required bridge-to-bridge watch?

Review Answers