Mellori Solutions, an Alkath Group company, unveiled Blue Jay Horizon – a containerised, marinised electromagnetic warfare (EW) test and evaluation system that redefines how Defence forces around the world can assure the performance of EW sensors and train their command teams.
Developed and built by a team of veterans, EW specialists, and engineers in regional New South Wales, Blue Jay Horizon made its public debut on 5 November 2025 at the Indo Pacific International Maritime Exposition 2025 in Sydney.
Blue Jay Horizon delivers through-air electromagnetic (EM) stimulation of radar and communication receivers, allowing crews to test, train, and learn in the EM spectrum under maritime conditions, in real time and around the clock.
Today’s battlespace is defined by rapid, contested activity across the EM spectrum. Adding Blue Jay Horizon to the test and training mix enhances the tempo and accuracy of exercises, introducing greater realism through simultaneous threat simulations. Command teams can experience the complexity and chaos of the modern-day EM spectrum.
Unlike aircraft-based training, which is limited by mission duration and reduced capability at night, Blue Jay Horizon can operate 24/7, enabling continuous, high-tempo EM training and assurance across the land, sea, and air domains.
“Command teams need to experience what the spectrum feels like – not just study it,” said Phil Guy, Managing Director of Mellori Solutions. “Blue Jay Horizon lets crews train in realistic, congested conditions, understanding how their systems behave and how to control the spectrum under pressure.”
Operators and engineers can see instantly whether an exercise unfolded as planned, accelerating learning cycles and helping crews adapt faster when things don’t go to script.
Housed in a specialised 10-foot ISO-certified secure container with a retractable roof that shields sensitive electronics from hostile environments when not in use, and allows rapid deployment of the payload systems during operation, Blue Jay Horizon can be deployed on fixed ranges, shore sites, or naval vessels (fully operable up to Sea State 4 and stowable to Sea State 6).
Inside, a software-defined RF architecture drives wideband generation of RF signals from 20 MHz to 40 GHz, providing the adaptability to replicate dynamic, real-world signal scenarios.
The conflict in Ukraine has shown that the EM spectrum is now vulnerable and volatile, and static threat libraries are quickly becoming obsolete.
“In this era, agility in the spectrum is everything,” said Phil Guy. “Blue Jay Horizon gives command teams a safe, realistic environment to build confidence in how they operate and control the EM spectrum – before they’re tested in operational theatres.”
Built in regional Australia, Blue Jay Horizon strengthens Australia’s sovereign EW and training capability while offering partners an affordable, deployable, and future-ready system.
“This capability shows what happens when subject-matter experts have the opportunity to turn operational insight into a realised, deployable capability,” said Phil Guy. “It’s about testing, training, and adapting faster than potential adversaries.”
The launch of Blue Jay Horizon marks the next step in the development and growth of Mellori’s suite of specialised EW test and evaluation products and further augments and supports the delivery of deployable, real-time electromagnetic test and training capabilities systems to our growing customer base.
As the Blue Jay product line evolves, Mellori continues to deliver solutions that shorten the path from concept to combat-ready capability – ensuring command teams are not just aware of the spectrum, but in control of it.