The purpose of a repeater is to:

• A. Replay radio signals within the fire building
• B. Rebroadcast radio signals
• C. Save and replay radio communications after the incident
• D. Change signals from analog to digital

Answer: (B)

The main idea is that a repeater extends radio coverage by receiving a live transmission and re-transmitting it to a wider area, effectively rebroadcasting the signal so units that would otherwise have poor reception can hear and be heard. In firefighting, this helps keep communications clear for crews inside buildings or at distant locations, improving safety and coordination. It isn’t about replaying stored conversations, saving communications for later, or converting signals from analog to digital. Those functions involve recording or digital conversion equipment, not the repeater’s job, which is simply to rebroadcast to extend range.