Repeaters relay signals between two-way radios that are obstructed or too far apart for direct radio-to-radio communication. Also known as two-way repeaters, they provide a centralized base station with an antenna that gathers and emits radio signals, a receiver that translates incoming signals into audio communications, and a transmitter that encodes audio communications as outgoing signals. They are typically placed at a centralized location within a building or on towers, hills, or other elevated spots.

Duplexers enable communication between transmitters and receivers with different operating frequencies. They filter radio signals so a single antenna can be used by both the transmitter and receiver.

These replacement parts change out worn repeater and duplexer components to restore function. They fit compatible repeater and duplexer brands and models.