What is a remedy if portable radios have dead spots during a pre-incident plan test?

The most effective remedy for addressing dead spots in portable radios during a pre-incident plan test is to install a fixed antenna system or repeaters. This approach enhances communication capabilities by improving the transmission and reception of radio signals, ensuring that personnel can communicate effectively even in areas where the signal may initially be weak or nonexistent.

Implementing a fixed antenna system or repeaters expands the range of communication, reduces blind spots, and increases the overall reliability of the communication system. This solution is proactive and addresses the root cause of the issue, rather than merely adapting to it. By enhancing the infrastructure, emergency responders can maintain clear communication during critical incidents, which is essential for effective coordination and safety.

The other options present less effective solutions. Relying on handheld radios exclusively could still leave communication gaps in some areas. Preventing the use of radios limits the functionality and capabilities of the team during incidents, while relying on visual signals could lead to miscommunication or delays in critical situations.