Digital radio building blocks
Key components of an interoperable digital radio network include:
Central control equipment — Handles authentication and users' access privileges. Also houses firewalls for security.
Base stations — Main radio links to connect control centers with field radios.
IP connections — Physical network links to connect base stations and control centers. Typically, the links are T1 lines from telecommunications providers, private microwave dishes or fiber network connections within municipalities.
Repeaters — Radios programmed to relay signals to remote areas away from the IP
Handsets — For in-field voice and data communications. Federal agencies require compliance with encryption regulations.
Alan Joch is a freelance writer based in New Hampshire.