What type of radio is installed on fixed posts used to send and receive calls?

The appropriate type of radio installed on fixed posts used to send and receive calls is a base station remote. Base station remotes are designed specifically for fixed positions and enable communication over a wider area than other portable or mobile options. They serve as a central hub for incoming and outgoing communications, often linked to a larger communication network. Their installation at fixed posts ensures that security personnel can maintain consistent communication with other units and central command, enhancing situational awareness and response coordination.

In contrast to base station remotes, portable radios and two-way radios, while effective for communication in various scenarios, are more suited for individuals on the move. Mobile two-way radios are designed for vehicles and may not provide the same level of functionality or coverage as base station remotes when used in a fixed setting. Lastly, base stations themselves are typically stationary systems that manage multiple channels and communications but are not installed as individual units at fixed posts. Each type of radio serves a different purpose, but for fixed installations, base station remotes are essential for effective and efficient operations.