Meeting U.S. Army future operating concepts with Sigma XRI

May 19, 2021

REDCOM Sigma XRI-400Future operating concepts for the U.S. Army emphasize the need for decentralized operations in complex environments and across all domains. In the next fight, ease of use, interoperability, and integration with Joint and Coalition forces will be critical for mission success.

In line with these operational concepts, REDCOM developed Sigma® XRI-400, a full-featured C2 platform that delivers voice, video, chat, and radio interoperability in a single box. REDCOM Sigma XRI-400 consists of a small form factor purpose-built platform with four radio ports, all powered by REDCOM’s flagship Sigma C2 software. This solution delivers the following key benefits to the U.S. Army:

Command and Control

Unit leaders need access to a command and control suite that provides consistent access to mission-critical information in order to maintain continuity of operations, maneuverability, and superiority within the battle space. REDCOM Sigma XRI-400 is designed to maintain situational awareness for troop and equipment maneuverability in any contested environment via any means. Even better, this stand-alone C2 solution can easily be deployed in less than 10 minutes.

Low SWaP

As the Army’s operations become more decentralized and distributed, the ability to communicate is more important than ever. REDCOM Sigma XRI-400 enables warfighters to sustain lines of communication while on-the move without getting bogged down by gear. The small form factor, robust design, and low power requirements of the Sigma XRI-400 means it can be deployed to the tactical edge in a backpack, on a vehicle, or on aerial assets. This is particularly valuable in forward-deployed scenarios where resources are limited and soldiers must be as light as possible.


Working with Non-Government Organizations (NGO), Joint, and/or Coalition forces presents unique challenges due to the varying signal and communications paths employed by each entity. By connecting up to four donor radios directly to the XRI-400, warfighters can instantly bridge the gap between disparate radio networks, endpoints, or frequencies, allowing for seamless communications between Joint and Coalition forces. Additionally, Sigma XRI-400 allows radio users to communicate directly with users on any SIP end device (e.g. SATCOM, VoIP phones) and can even participate in voice conferences.

Flexible Communications

REDCOM Sigma XRI-400 helps warfighters leverage multiple types of communications lines, especially critical in Disconnected, Intermittent, Limited bandwidth (DIL) environments. If one line of communication is compromised, the next down the line can be used from IP to Wi-Fi, LTE, SATCOM, UHF, VHF, HF, and software-defined radios (SDR).

Ease of Use

Usability is imperative to today’s warfighter, whether they are at the tactical edge or in a network operations center environment. REDCOM Sigma’s graphical user interface (GUI) is intuitive and easy to use. Incidental users or administrators can be trained in minutes. This allows the Army to further improve its force design by allowing for smaller geographically dispersed teams that do not require field service representatives or IT experts.

Rapid Setup and Tear Down

Designed for shoot, move, communicate operations, Sigma XRI-400 was developed to be resilient to hard shutdowns and power up in under a minute. The flexible nature of REDCOM Sigma XRI-400 also allows for the use of various mediums in order to pass mission-critical information to any user. Communications can be fully operational within minutes, enabling expeditionary forces to secure a tactical advantage by maintaining mobility at all times.