Custom Designed, Secure Networking, Communications & Computing Solutions To Help You Successfully Carry Out Your Jobs & Missions

We proudly serve commercial, government, and military agencies because when your “office” isn’t an office, you need small, rugged routers, switches, servers, and CSfC appliances you can depend on.

Sub U Systems Is Now Part Of Sigma Defense Systems.

As of 5/17/2022 we are excited to announce that Sub U Systems is part of Sigma Defense Systems. The marriage of SUB-U’s Software Definable Networking – Appliance™ technologies with Sigma’s ISR platform yields rugged, designed and produced from the printed circuit board up, deployable C5ISR products and systems that offer unparalleled capabilities.



NSA Suite A and Suite B Encryption



Enterprise-Class Performance in Portable Devices



Up to 5x More Power Efficient than Comparable Rack-Mounted Solutions



Built to Handle Extreme Environments in Austere Locations


Learn more about our small, rugged IP routers, switches, servers, integrated IP-based appliances, Software Definable Network Appliances™ (SDN-A™), and NSA Commercial Solutions for Classified (CSfC) Comprised Solutions.


Learn more about our NSA Commercial Solutions for Classified (CSfC) Comprised Solutions, executive communications solutions, deployable communications solutions, and custom design solutions.

Getting Started is Easy

Contact us with your technology requirements and use case, and we will qualify your needs.

We will design and manufacture a custom solution that meets YOUR specific requirements

Field your tailor-made solution with confidence that all your technological requirements are met

Proudly Partnering With...

Contact Us

Call us at 202-640-2623 to get a custom quote or fill out this form and we will get in touch with you.