Fire Safety, Extinguishers, and Rescue Techniques Practice Test 2026 - Free Fire Safety Practice Questions and Study Guide

In two-way radio systems, radios are categorized by how they’re used: handheld (portable), mobile (vehicle-mounted), and base (fixed). When a radio is permanently mounted in a vehicle, it’s a mobile radio. It’s designed to stay in the vehicle, drawing power from the vehicle’s electrical system and connected to a vehicle antenna for better range, making it ideal for in-vehicle or on-the-move communication. Handheld radios are carried by users and rely on their own batteries, while base radios stay fixed at a single location. So the one that stays installed in a vehicle is the mobile radio.