GMDSS. FCC Test 48

How are paired NBDP frequencies normally used?

These are normally used for ARQ communications with coast radio stations.
These are normally used for FEC communications with coast radio stations.
These are normally used for DSC communications with coast radio stations.
These are normally used only for distress communications to limit channel interference.

An ITU simplex channel frequency assignment is defined as:

Transmit and receive frequencies are different regardless of emission mode.
Transmit and receive frequencies must be identical.
Transmit and receive frequencies must be different.
Transmit and receive frequencies may be different, depending on whether communications are ship-shore or ship to ship.

Which statement regarding GMDSS MF/HF Transceiver frequency set-up is true:

None of the above.
Transmit and receive frequencies must always be recalled from a database or memory.
Some consoles allow both manual keypad entry and ITU channel recall from a database or memory, while others do not.
Transmit and receive frequencies must always be manually entered from the keypad.

An ITU duplex channel frequency is defined as:

Transmit and receive frequencies must be different.
Transmit and receive frequencies must be identical.
Transmit and receive frequencies may be different, depending on whether communications are ship-shore or ship to ship.
Transmit and receive frequencies may be different, depending on whether communications are ship-shore or ship to ship.

To set-up the MF/HF Transceiver for a telex call to a coast station, the operator must:

How are paired SSB frequencies normally used?

To set-up the MF/HF Transceiver for a voice call to a coast station, the operator must:

For general communications purposes, paired frequencies are:

Which statement regarding GMDSS MF/HF Transceiver frequency set-up is true:

ITU channels must be recalled from a database or memory.
All consoles allow both manual keypad entry and ITU channel recall from a database.
Depending on the manufacturer, either a
Transmit and receive frequencies may be manually entered from the keypad.

For general communications purposes, simplex frequencies are:

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