Miami-Dade Police Radio Codes Practice Test 2026 - Free Police Radio Code Practice Questions and Study Guide

The main idea is that these notifications show whether a unit is actively transmitting or currently available, guiding how the dispatcher coordinates resources. When a unit is on air, their radio is live and they are engaged in a transmission or responding to a call, so they’re busy for the moment. When a unit is off air, they’re not transmitting and are considered available or not actively involved, making them a candidate for a new assignment. This status helps avoid overloading a single unit, quickly identify who can take the next task, and keep the response flow efficient.

These indicators don’t convey fuel levels, exact location on a scene, or shift times, which are tracked by other systems or procedures.