MALVERN, PA — Rajant Corporation said it has successfully completed a subterranean communications trial during NATO Allied Rapid Reaction Corps’ primary exercise of the year, Ex AVENGER TRIAD 25, demonstrating that high-bandwidth, mobile networking can be sustained in some of the most RF-denied environments.
The exercise, conducted in October and November 2025, took place in a disused mine in southwest England. Rajant provided a private, fully mobile mesh network that delivered resilient underground connectivity, enabling communications in terrain where conventional systems typically fail.
According to the company, the network functioned as a transport-agnostic, multi-bearer overlay that unified multiple communications technologies into a single resilient fabric. The system integrated with existing network transports and mission systems while maintaining connectivity under mobility and multipath conditions. Personnel from ARRC and the British Army’s 22 Signal Regiment identified several potential next steps, including the concept of a wireless subterranean headquarters.
The trial highlighted the flexibility of Rajant’s Kinetic Mesh technology, which can be deployed across underground, ground, and air assets to provide continuous, unified connectivity across operational domains.
“In RF-challenged underground environments, Rajant’s Kinetic Mesh technology delivers decisive connectivity by enabling BreadCrumb nodes to sustain robust links under mobility and multipath conditions,” said Ed Preston, president of military and government markets at Rajant Corporation. He said the system’s self-healing design and dynamic routing provide commanders with networking capabilities that can be deployed immediately rather than years into the future.
Exercise feedback noted that Rajant’s on-site engineering support was instrumental in exploring the system’s full utility and ensuring operational success. Participants reported that the equipment was quickly configurable, easy to install, and robust under sustained use. ARRC headquarters staff said the network remained operational even in the most denied environments, helping deliver decision advantage underground.
Ahead of the field exercise, Rajant hosted ARRC personnel at the NORCAT mine in Sudbury, Ontario, a global center for underground training, testing, and technology development. The company said technologies proven in that environment have previously transitioned into commercial and operational use.
Rajant said the results reinforce its position as a resilient, “any-to-any” transport layer for congested and complex terrain. Its Kinetic Mesh architecture scales node by node without a single point of failure, using multi-transceiver radios to create redundant links across multiple frequencies and channels, capabilities the company said are particularly relevant for subterranean command, control, communications, and intelligence operations.
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