Press Releases

REDCOM announces new Sigma XRI module for PacStar® Tactical Communications Systems from Curtiss-Wright

May 9, 2023

The new PacStar 421 module integrates REDCOM eXtended Radio Interoperability (XRI) into PacStar 400-Series Tactical Communications Systems

REDCOM Laboratories, Inc., a leading developer and supplier of advanced tactical communications systems for the U.S. Department of Defense (DoD), has announced a new Sigma XRI module for PacStar systems. The new PacStar 421 module includes REDCOM Sigma XRI technology with radio gateway services for modern and legacy radios, enabling tactical users to seamlessly bridge the gap between disparate VoIP and RoIP radio systems. The module leverages existing radio assets to enable maximum interoperability, regardless of the radio network, endpoint, or frequency used.

PacStar 421 RoIP module with REDCOM Sigma XRIThe PacStar 421 module with REDCOM XRI also includes REDCOM’s powerful Sigma C2 Console app, which enables RoIP and VoIP endpoints to be monitored, controlled, and patched together on-the-fly from an intuitive interface.

“PacStar and REDCOM have worked closely together for several years, but this is the first time we have executed joint development to create a fully integrated product,” said REDCOM Strategic Lead John Kelliher. “REDCOM’s robust and proven C2 communications solution converges IP- and RF-based communications, enabling real-time interoperability at the point of attack. Integrating REDCOM C2 technology with PacStar’s modular systems greatly reduces complexity while allowing users to leverage multiple, disparate means of communication to ensure interoperability in complex and contested combat environments.”

“We are very excited to collaborate with REDCOM to add REDCOM XRI functionality to PacStar 400 Series tactical communications ecosystem,” said Dominic Perez, CTO, Curtiss-Wright Defense Solutions division. “The combination of PacStar and REDCOM technologies gives operators the best of both worlds, delivering a proven full-featured C2 platform that uses a single interface for controlling RoIP and SIP endpoints and for voice, video and chat.”

A live demonstration of the PacStar 421 RoIP Module with REDCOM Sigma XRI will be presented during SOF Week, May 8-11, Tampa Convention Center, Tampa, FL, in Curtiss-Wright’s booth #1143.


REDCOM Laboratories, Inc. is a woman-owned small business that specializes in the development of advanced strategic, operational, and tactical communication solutions with a focus on interoperability, flexibility, and ease of use. REDCOM’s MIL-spec products are optimized for low size, weight, and power (SWaP), making them the ideal communications core for denied environments or deployments to the tactical edge. REDCOM’s customers include all branches of the military, government agencies, emergency responders, integrators, and enterprises. All REDCOM products are proudly designed, built, and supported in the United States. For additional information, please visit the REDCOM website at

About the PacStar Family of Leading Battlefield Solutions

The industry-leading PacStar family of advanced communications solutions addresses a wide range of military, intelligence, and commercial applications. Curtiss-Wright created and manufactures COTS-based rugged, small form factor expeditionary and mobile communications systems. Separately, it developed integrated, network communications management software, IQ-Core Software, for the military, federal, state/local government, and emergency responder markets. The company’s patented IQ-Core Software, hardware technology, and integrated solutions provide secure, command, control, and communications systems, particularly in remote or infrastructure starved areas. In addition, PacStar communications systems are ideally suited for commercial/industrial organizations with mission-critical field communications requirements.

For additional information about Curtiss-Wright Defense Solutions products, please visit, LinkedIn, and Twitter @CurtissWrightDS.