Disaster Relief Starts with Clear Communication
REDCOM Sigma empowers agencies to communicate without infrastructure, coordinate without delay, and respond without hesitation — even in the most chaotic environments. The result is more efficient disaster relief and humanitarian aid efforts.
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Built for Chaos. Engineered for Emergencies. Ready for Relief.
When disaster strikes, the first 48 hours can make all the difference. Unfortunately, that’s also when communication systems are most likely to fail. Power is out. Networks go down. And yet, it’s exactly when people need to connect the most — to coordinate rescue efforts, deliver aid, and save lives. Without reliable communication, chaos takes over. That’s why having the right communication tools in place before the disaster hits is critical.
Why is REDCOM Sigma a Great Comms Platform for Disaster Relief?
- Unmatched Interoperability
- Quick Adoption & Deployment
- Easy to Learn
- Affordable Licensing Model

Saving Lives Starts with Staying Connected
In a disaster or humanitarian crisis, time is short and coordination is everything. However, with numerous players involved, including the U.S. military, international forces, government agencies, and NGOs, the lines of communication can quickly become entangled. That’s why reliable, interoperable communication solutions are essential — it’s the key to a unified, decisive response when every second counts.
Scenarios like this are where REDCOM Sigma thrives. By delivering secure, interoperable voice and data capabilities, Sigma keeps teams connected, informed, and aligned — enabling a faster and more effective response when lives are at stake.
REDCOM Sigma is Built for the Chaos of Disaster Relief
Interoperable Comms, Regardless of Endpoint
From the P25 radios commonly used by public safety and disaster relief agencies to cell phones, desk phones, and other endpoints, Sigma can connect them all.
Integrating REDCOM Sigma into your disaster relief response plan enables unified communications even when agencies use different radio technologies or operating environments are compromised.

More Than Just a Radio Gateway.
An Entire Command & Control Platform.
The REDCOM Sigma XRI is a Small-Form-Factor Command and Control (C2) platform featuring voice, video, chat, and radio interoperability, along with an integrated console. It is more than just a basic radio gateway. Users can bridge radio nets, satellite communications, LTE networks, and wired or wireless IP in any form.
IP-Based PTT Voice Integration
REDCOM Sigma XRI enables seamless interoperability with unicast and multicast RTP-capable radios and PTT apps.
Communicate Across Agencies
Instantly link the radios, softphones, and other communication endpoints that disaster relief organizations use.
Easy to Deploy & Learn
New users can be trained on Sigma in hours or days, not weeks. Perfect for urgent disaster relief scenarios.
Built for Teams on the Move
Sigma XRI weighs only 2.6 pounds, is resilient to hard shutdowns, withstands harsh conditions, and powers up in under two minutes.
When Every Second Counts, REDCOM Delivers
Ditch The Radio. Our ATAK Plugin Has You Covered.
The REDCOM Sigma Client for ATAK plugin provides instant voice PTT across SIP, RF, and IP networks, eliminating traditional radio constraints. The “channels” feature in the app emulates traditional radio nets, meaning you can communicate with everyone you need to, regardless of the endpoint they’re using, all from your ATAK-enabled device.
Multi-Agency Communication is a Breeze
Instantly link the radios, softphones, and other communication endpoints that disparate public safety organizations use—without replacing existing gear.
Save Money & Reduce Dependency on Radios
Radios are expensive and can strain your already tight budget. Save your money; our Sigma Client for ATAK plugin is a cost-effective alternative that provides the functionalities you expect from a traditional radio, plus much more.
The result is improved comms interoperability, quicker disaster response times, lighter loadouts, and more money left for other expenditures.
Pre-Configure Channels or Create Them On The-Fly
Sigma Client provides users with the ability to create ad-hoc and preconfigured channels to set up talk groups featuring and efficiently before and during an operation. Set up is easy and allows for any endpoint to be added.
When Every Second Counts, REDCOM Delivers
From hurricanes and tornadoes to forest fires and other natural disasters, every second counts. From the time it takes to acquire new technology, train users, and deploy it in the field, the difference between a slow process and a quick one can be a matter of life and death.
Manufactured and serviced in the United States, REDCOM is used to answering the call quicker than our competitors. We take pride in our ability to fulfill requirements and get you trained and using our equipment in a matter of weeks.
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