Key Topic 80: Installation Codes & Procedures

Question 1

3-80L1: What color is the binder for pairs 51-75 in a 100-pair cable?

A. Red
B. Blue
C. Black
D. Green

Answer 1

D. Green.

Question 2

3-80L2: What is most important when routing cables in a mobile unit?

A. That cables be cut to the exact length.
B. Assuring accessibility of the radio for servicing from outside the vehicle.
C. Assuring radio or electronics cables do not interfere with the normal operation of the vehicle.
D. Assuring cables are concealed under floor mats or carpeting.

Answer 2

C. Assuring radio or electronics cables do not interfere with the normal operation of the vehicle.

Question 3

3-80L3: Why should you not use white or translucent plastic tie wraps on a radio tower?

A. White tie wraps are not FAA approved.
B. UV radiation from the Sun deteriorates the plastic very quickly.
C. The white color attracts wasps.
D. The black tie wraps may cause electrolysis.

Answer 3

B. UV radiation from the Sun deteriorates the plastic very quickly

Question 4

3-80L4: What is the 6th pair color code in a 25 pair switchboard cable as is found in building telecommunications interconnections?

A. Blue/Green, Green/Blue.
B. Red/Blue, White/Violet.
C. Red/Blue, Blue/Red.
D. White/Slate, Slate/White.

Answer 4

C. Red/Blue, Blue/Red.

Question 5

3-80L5: What tolerance off of plumb should a single base station radio rack be installed?

A. No tolerance allowed.
B. Just outside the bubble on a level.
C. All the way to one end.
D. Just inside the bubble on a level.

Answer 5

D. Just inside the bubble on a level.

Question 6

3-80L6: What type of wire would connect an SSB automatic tuner to an insulated backstay?

A. GTO-15 high-voltage cable.
B. RG8U.
C. RG213.
D. 16-gauge two-conductor.

Answer 6

A. GTO-15 high-voltage cable.