What do public safety wireless communications primarily utilize VHF-High, UHF, and which other frequency band?

Public safety wireless communications primarily utilize the VHF-High, UHF, and 700-800 MHz frequency bands due to their effective propagation characteristics and the ability to penetrate urban environments. The 700-800 MHz band is particularly advantageous for first responders and emergency services because it provides a balance between coverage area and signal penetration into buildings, which is crucial during emergencies when reliable communication is necessary.

This frequency range is also optimized for interoperability among various public safety agencies, enabling seamless communication in critical situations. It was allocated for public safety communications following the Digital Television Transition and is part of a broader effort to enhance emergency communications infrastructure.

The other options, such as the 850-900 MHz band, 1.2 GHz, and 2.4 GHz, are less frequently used for public safety communications. While they may serve other purposes in telecommunications or commercial use, they do not have the same established role or comprehensive regulatory backing for emergency and public safety operations as the 700-800 MHz band does. This established allocation ensures that emergency services have the necessary spectrum to operate effectively and reliably.