Ham Radio Technician Test Safety Procedures & Risk Management 2 — Questions and Answers
Question 1: What is the minimum safe distance you should maintain from a lightning rod or metal mast during a thunderstorm?
- 1 foot
- 3 feet
- Several feet, staying indoors is best (Correct answer)
- 10 feet outdoors is sufficient
Correct answer: Several feet, staying indoors is best
During a thunderstorm you should go indoors immediately; no outdoor distance is considered truly safe when lightning is present.
Question 2: When climbing a tower, what should you do with your tools while working at height?
- Hold them in one hand while climbing
- Leave them on the ground and make multiple trips
- Use a tool bag or belt to keep them secured to your body (Correct answer)
- Toss them up to a helper already at the top
Correct answer: Use a tool bag or belt to keep them secured to your body
Tools must be secured in a tool bag or belt so they cannot fall and injure people below.
Question 3: What hazard is presented by a resonant antenna that is connected to a transmitter operating on that antenna's frequency?
- The antenna may overheat and melt
- High RF voltages can appear at the feedpoint and along the antenna (Correct answer)
- The coax will absorb all power before it reaches the antenna
- SWR will automatically drop to 1:1
Correct answer: High RF voltages can appear at the feedpoint and along the antenna
A resonant antenna has high RF voltage at its feedpoint and along its elements, creating a shock hazard for anyone who touches it.
Question 4: What is the purpose of a safety wire or safety clip when working on a tower?
- To keep the antenna aimed correctly
- To prevent tools from vibrating loose
- To provide a backup connection that arrests a fall if the primary harness fails (Correct answer)
- To ground the tower structure
Correct answer: To provide a backup connection that arrests a fall if the primary harness fails
A safety wire or secondary lanyard provides a backup arrest point in case the primary fall-arrest component fails.
Question 5: Which of the following best describes proper first aid for a person who has received a severe RF burn?
- Apply butter or oil to the burn and leave it alone
- Cool with cold running water, cover loosely, and seek medical attention (Correct answer)
- Pop any blisters and apply adhesive bandages
- Rub the burn vigorously to restore circulation
Correct answer: Cool with cold running water, cover loosely, and seek medical attention
Severe burns should be cooled with running water, loosely covered, and evaluated by a medical professional.
Question 6: Why should you never operate a gasoline-powered generator inside a vehicle or enclosed shelter?
- Fuel vapors may condense on electronics
- Carbon monoxide buildup can be rapidly fatal (Correct answer)
- The generator will overheat without outdoor airflow within minutes
- FCC regulations prohibit indoor generator use
Correct answer: Carbon monoxide buildup can be rapidly fatal
Generators produce carbon monoxide, an odorless toxic gas that can reach lethal concentrations very quickly in an enclosed space.
Question 7: What is the main reason amateur radio operators are advised to use a dummy load when testing a new transmitter?
- A dummy load provides better audio quality for testing
- It prevents RF from being radiated and interfering with others or posing a nearby RF exposure hazard (Correct answer)
- It increases the transmitter's output power during tests
- It prevents the transmitter from overheating
Correct answer: It prevents RF from being radiated and interfering with others or posing a nearby RF exposure hazard
A dummy load absorbs RF power as heat rather than radiating it, avoiding interference and reducing nearby RF exposure risk.
Ham Radio Technician Test Safety Procedures & Risk Management 2
What is the minimum safe distance you should maintain from a lightning rod or metal mast during a thunderstorm?