7-A-077: INMARSAT Equipment Faults and Maintenance-1
7-77I1:
A vessel with an 18-hour ETA to the Panama Canal on a voyage from Miami loses the ability to communicate via Inmarsat. The most likely cause is?
An equipment fault.
The vessel has sailed beyond the coverage area of the Southbury Shore Station.
The vessel has sailed beyond the coverage area of the Eastern Atlantic satellite.
The vessel has sailed beyond the coverage area of the Western Atlantic satellite.
7-77I2:
A vessel, before transiting the Panama Canal, on a voyage from San Diego to Miami, loses the ability to communicate via Inmarsat. The most likely cause is:
The vessel has sailed beyond the coverage area of the Pacific satellite.
The vessel has sailed beyond the coverage area of the Southbury Shore Station.
The vessel has sailed beyond the coverage area of the Western Atlantic satellite.
The satellite orbit is beyond the usable range of the SES.
7-77I3:
What can be the visual observation of a condition whereby it may be possible to initiate a reliable TELEX transmission but a voice transmission may not be possible?
An indication on a meter or on the terminal of low receiver signal strength.
An indication on a meter or on the display terminal of high transmit power.
An indication of a very high antenna elevation on the display terminal screen.
An indication that the antenna has reached its maximum travel in one direction.
7-77I4:
What maintenance function may the holder of a GMDSS Radio Operator license perform, or supervise the performance of, on an Inmarsat-C SES?
Remove stack deposits and other debris from the radome preventing degraded performance.
Adjust the station's EIRP.
Adjust a reference oscillator or synthesizer.
None of these
7-77I5:
What maintenance function may the holder of a GMDSS Radio Operator license perform, or supervise the performance of, on an Inmarsat-C SES?
Adjust any front panel controls.
Painting the radome.
Adjust the station's EIRP.
Adjust a reference oscillator or synthesizer.
7-77I6:
Which functions may the holder of a GMDSS Radio Operator License NOT perform on the Inmarsat-C equipment?
Optimize performance by adjusting the transmitter EIRP.
Maintain the antenna clear of soot, paint, etc.
Log-on, traffic and log-off functions.
Entry of position data and selection of CES.
|
Color key:
|
|
● = Unseen
|
|
● = Weak
|
|
● = Review
|
|
● = Learned
|
|
● = Incorrect answer
|
