FCC Technician Class Exam Study Guide - 2014-2018/Subelement T0 Group B
Antenna safety: tower safety; erecting an antenna support; overhead power lines; installing an antenna
The Question Pool
[edit | edit source]Question 1
[edit | edit source]- When should members of a tower work team wear a hard hat and safety glasses?
- A. At all times except when climbing the tower
- B. At all times except when belted firmly to the tower
- C. At all times when any work is being done on the tower
- D. Only when the tower exceeds 30 feet in height
The correct answer is C.
Question 2
[edit | edit source]- What is a good precaution to observe before climbing an antenna tower?
- A. Make sure that you wear a grounded wrist strap
- B. Remove all tower grounding connections
- C. Put on a climbing harness and safety glasses
- D. All of the these choices are correct
The correct answer is C.
Question 3
[edit | edit source]- Under what circumstances is it safe to climb a tower without a helper or observer?
- A. When no electrical work is being performed
- B. When no mechanical work is being performed
- C. When the work being done is not more than 20 feet above the ground
- D. Never
The correct answer is D.
Question 4
[edit | edit source]- Which of the following is an important safety precaution to observe when putting up an antenna tower?
- A. Wear a ground strap connected to your wrist at all times
- B. Insulate the base of the tower to avoid lightning strikes
- C. Look for and stay clear of any overhead electrical wires
- D. All of these choices are correct
The correct answer is C.
Question 5
[edit | edit source]- What is the purpose of a gin pole?
- A. To temporarily replace guy wires
- B. To be used in place of a safety harness
- C. To lift tower sections or antennas
- D. To provide a temporary ground
The correct answer is C.
Question 6
[edit | edit source]- What is the minimum safe distance from a power line to allow when installing an antenna?
- A. Half the width of your property
- B. The height of the power line above ground
- C. 1/2 wavelength at the operating frequency
- D. So that if the antenna falls unexpectedly, no part of it can come closer than 10 feet to the power wires
The correct answer is D.
Question 7
[edit | edit source]- Which of the following is an important safety rule to remember when using a crank-up tower?
- A. This type of tower must never be painted
- B. This type of tower must never be grounded
- C. This type of tower must never be climbed unless it is in the fully retracted position
- D. All of these choices are correct
The correct answer is C.
Question 8
[edit | edit source]- What is considered to be a proper grounding method for a tower?
- A. A single four-foot ground rod, driven into the ground no more than 12 inches from the base
- B. A ferrite-core RF choke connected between the tower and ground
- C. Separate eight-foot long ground rods for each tower leg, bonded to the tower and each other
- D. A connection between the tower base and a cold water pipe
The correct answer is C.
Question 9
[edit | edit source]- Why should you avoid attaching an antenna to a utility pole?
- A. The antenna will not work properly because of induced voltages
- B. The utility company will charge you an extra monthly fee
- C. The antenna could contact high-voltage power wires
- D. All of these choices are correct
The correct answer is C.
Question 10
[edit | edit source]- Which of the following is true concerning grounding conductors used for lightning protection?
- A. Only non-insulated wire must be used
- B. Wires must be carefully routed with precise right-angle bends
- C. Sharp bends must be avoided
- D. Common grounds must be avoided
The correct answer is C.
Question 11
[edit | edit source]- Which of the following establishes grounding requirements for an amateur radio tower or antenna?
- A. FCC Part 97 Rules
- B. Local electrical codes
- C. FAA tower lighting regulations
- D. Underwriters Laboratories' recommended practices
The correct answer is B.
Question 12
[edit | edit source]- Which of the following is good practice when installing ground wires on a tower for lightning protection?
- A. Put a loop in the ground connection to prevent water damage to the ground system
- B. Make sure that all bends in the ground wires are clean, right angle bends
- C. Ensure that connections are short and direct
- D. All of these choices are correct
The correct answer is C.