FCC Commercial Element 9 pool, section 23

Subelement C

Satellite Systems:

Section 23

Technology:

23C1

What are the frequencies for Inmarsat-C shipboard satellite operation?

A.
Reception: 1526.5 - 1560.5 MHz and Transmission: 1625.0 - 1659.0 MHz
B.
Reception: 1625.0 - 1659.0 MHz and Transmission: 1526.5 - 1560.5 MHz
Correct Answer
C.
Reception: 1530.0 - 1545.0 MHZ and Transmission: 1626.5 - 1645.5 MHz
D.
Reception: 1625.0 - 1659.0 MHz and Transmission: 1526.5 - 1560.5 MHz

23C1

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23C2

What is an LNA?

23C2

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23C3

What function does the LNA perform?

23C3

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23C4

What is the fade margin factor?

A.
A design allowance that provides for the sun to accommodate expected fading for the purpose of ensuring that the required quality of service is maintained.
Correct Answer
B.
A design allowance to accommodate expected fading.
C.
The increase in fade over a receiver's noise floor.
D.
The ratio between the largest and smallest values of a received signal.

23C4

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23C5

What is signal to noise ratio?

A.
A measure used that compares the distance of a desired signal to the level of background noise.
Correct Answer
B.
A measure used that compares the level of a desired signal to the level of background noise.
C.
A measure used that compares the frequency of a desired signal to the frequency of background noise.
D.
A measure that measures signal in the forward direction and noise in the reverse direction.

23C5

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23C6

What is the abbreviation for signal to noise?

23C6

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