What safety precaution should be taken when operating a radio near overhead power lines?

Maintaining a safe distance from overhead power lines is crucial when operating a radio or any equipment in that vicinity due to the risk of electrical hazards. Overhead power lines can carry high voltage, and coming too close can expose an operator to the dangers of electric shock or accidental contact, which can lead to serious injuries or fatalities.

Establishing a safe distance helps to mitigate these risks significantly. Operators should be aware of their surroundings and understand the height and location of power lines, especially when using ladders, antennas, or other equipment that can extend their reach. This precaution is particularly important in amateur radio operations where antennas are often erected at heights that could bring them into proximity with these power lines.

The other options, while they may involve relevant safety practices in other contexts, do not directly address the specifics of avoiding hazards associated with overhead power lines during radio operation. For instance, wearing insulated gloves or using battery-operated devices may not be sufficient on their own to prevent accidents in the presence of high voltage lines.