What type of communication system utilizes a group of assigned frequencies for efficient operation?

The type of communication system that utilizes a group of assigned frequencies for efficient operation is trunked radios. Trunked radio systems are designed to optimize the use of available radio frequencies by automatically selecting the best frequency from a pool based on current usage and availability. This allows for more efficient communication, as multiple users can share the same frequency channels without interfering with one another.

By dynamically assigning frequencies, trunked systems can handle a larger number of users and facilitate communications across various units, making it particularly advantageous for emergency services like fire departments and police. This method prevents congestion on any single channel and enhances overall communication capabilities during critical situations.

Other systems, like repeater systems, utilize a set frequency to amplify signals, while conventional radios operate on fixed and dedicated frequencies without the flexibility provided by trunking. Simplex radios use a single frequency for two-way communication but don’t offer the frequency pooling and management capabilities that define trunked radio systems.