FCC Commercial Element 7 pool, section 67

Subelement I

Inmarsat Equip. & Comms:

Section 67

Compare and Differentiate FBB and C Terminals

67I1

Which statement concerning Inmarsat-FBB and Inmarsat-C terminals is correct?

A.
Both Inmarsat-FBB and Inmarsat-C units are capable of fax and voice communications.
B.
Inmarsat-FBB units are not capable of data communications, but Inmarsat-C units are capable of data communications.
Correct Answer
C.
Both Inmarsat-FBB and Inmarsat-C units can send data as well as send messages to fax machines.
D.
None of these answers is correct.

67I1

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67I2

When Inmarsat-FBB and Inmarsat-C terminals are compared:

A.
Inmarsat-FBB antennas are larger, but omni-directional, while Inmarsat-C antennas are smaller and parabolic, for aiming at the satellite.
B.
Inmarsat-FBB antennas are parabolic and smaller for higher gain, while Inmarsat-C antennas are larger but omni-directional.
C.
Inmarsat-C antennas are smaller, but omni-directional, while Inmarsat-FBB antennas are parabolic for lower gain.
Correct Answer
D.
Inmarsat-FBB antennas are larger, but directional for higher gain, while Inmarsat-C antennas are smaller and non-parabolic, and do not require aiming at the satellite.

67I2

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67I3

Which statement concerning Inmarsat-FBB and Inmarsat-C terminals is correct?

Correct Answer
A.
Inmarsat-FBB terminals require GPS input, in order to enable the initial acquisition for satellite tracking.
B.
Inmarsat-FBB terminals require gyro and GPS input, in order to enable automatic satellite tracking.
C.
Inmarsat-C terminals require only GPS input, in order to enable automatic satellite tracking.
D.
Inmarsat-C terminals require continuous GPS input, in order to enable automatic satellite tracking.

67I3

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67I4

When Inmarsat-FBB and Inmarsat-C terminals are compared:

A.
Inmarsat-C antennas are smaller, with active parabolic antennas but no rewind capability.
Correct Answer
B.
Inmarsat-C antennas are smaller, with passive non-parabolic antennas but no rewind capability.
C.
Inmarsat-FBB antennas are larger, with passive non-parabolic antennas that require rewind capability.
D.
Inmarsat-FBB antennas are larger, with stationary parabolic antennas but no rewind capability.

67I4

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67I5

Which statement concerning Inmarsat-FBB and Inmarsat-C terminals is correct?

A.
Both Inmarsat-FBB and Inmarsat-C units are subject to shadowing effects due to their omni-directional antennas.
Correct Answer
B.
Both Inmarsat-FBB and Inmarsat-C units are subject to shadowing effects, but Inmarsat-FBB units have directional antennas.
C.
Both Inmarsat-FBB and Inmarsat-C units are subject to shadowing effects, but Inmarsat-C units have directional antennas.
D.
Both Inmarsat-FBB and Inmarsat-C units are subject to shadowing effects, due to their directional antennas.

67I5

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67I6

When Inmarsat-FBB and Inmarsat-C terminals are compared:

A.
Inmarsat-FBB units provide greater communications capabilities, with the benefits of greater size, weight, installation expense and initial cost.
B.
Inmarsat-C provides lesser communications capabilities, with the trade-offs of greater size, weight, installation expense and initial cost.
Correct Answer
C.
Inmarsat-FBB units provide greater communications capabilities, with the trade-offs of greater size, weight, installation expense and initial cost.
D.
Inmarsat-C units are of smaller size, weight, installation expense and initial cost and provide greater communications capabilities due to modern technology.

67I6

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