Which best describes the role of a repeater in a radio system?

Which best describes the role of a repeater in a radio system?

• A. To store emergency calls for later review
• B. To convert analog signals to digital
• C. To provide a backup power source
• D. To amplify the radio signal to extend coverage

Answer: (D)

A repeater’s job is to extend radio coverage by receiving a signal, boosting its strength, and re-transmitting it on a different channel so distant or obstructed areas can hear it clearly. This setup often uses two frequencies—one for receiving and one for transmitting—so users can communicate as if they’re closer together, even when terrain or buildings would otherwise block the signal. The other options aren’t describing this role: storing calls would be a dispatch or recording function, converting analog to digital is a codec or digital radio feature, and while a repeater needs power, its primary purpose is to boost and relay the signal to extend range.

A repeater’s job is to extend radio coverage by receiving a signal, boosting its strength, and re-transmitting it on a different channel so distant or obstructed areas can hear it clearly. This setup often uses two frequencies—one for receiving and one for transmitting—so users can communicate as if they’re closer together, even when terrain or buildings would otherwise block the signal. The other options aren’t describing this role: storing calls would be a dispatch or recording function, converting analog to digital is a codec or digital radio feature, and while a repeater needs power, its primary purpose is to boost and relay the signal to extend range.