STARK Defence

The transaction brings together two closely related technology areas. STARK already develops unmanned systems and its R-Zero electronic warfare system, while Raydiant RF specializes in communications and radio-frequency technologies intended to help unmanned platforms detect spectrum activity and maintain connectivity under electronic attack.

The financial terms of the acquisition were not disclosed by STARK.

Raydiant RF Brings RF and Antenna Engineering Expertise

Raydiant RF was founded in Berlin in 2024 at the Urban Tech Republic in Berlin-Tegel. The startup has focused on directional communications and battlefield radio signal detection technologies for unmanned platforms.

Its engineering expertise includes antenna design, analog electronics and software-defined radios, or SDRs. These technologies provide much of the hardware foundation required for modern electronic warfare systems, where platforms must detect, characterize and respond to activity across an increasingly congested electromagnetic spectrum.

STARK said Raydiant RF has developed a compact directional antenna system that can be installed on existing unmanned platforms. The company says the system uses edge AI to analyze electromagnetic activity and respond to attempts to disrupt communications.

The significance is not simply the ability to establish a radio link. In a contested environment, the way a platform transmits can determine how easily an adversary can detect, locate or interfere with it.

Directional Communications Could Reduce Electromagnetic Exposure

Traditional radio communications can produce electromagnetic emissions that are detectable by an adversary equipped with suitable electronic support or signals intelligence systems. Those emissions can potentially reveal the location or activity of a transmitter even when the platform itself has a small visual or infrared signature.

Raydiant RF’s approach is based on directing the radio signal toward the intended receiver rather than broadcasting it broadly. STARK compares the concept to a laser beam rather than a conventional light bulb. The company says this can reduce the electromagnetic signature of the communication and make the link more difficult to detect, locate or jam.

That distinction matters for unmanned aircraft and other autonomous platforms operating close to an adversary.

A drone may survive physical attack but still become operationally ineffective if its command link is disrupted, its navigation is degraded or its ability to transmit information to an operator is lost. NATO’s own work on contested electromagnetic environments identifies resilient communications, spectrum analysis and adaptive systems as important requirements for maintaining operations when interference or deliberate jamming is present.

R-Zero Provides the Starting Point

STARK is not entering electronic warfare from scratch. The company says it has already developed R-Zero, an electronic warfare system designed to allow unmanned platforms to conduct reconnaissance and locate hostile transmitters and radar installations.

The Raydiant RF acquisition extends that effort from sensing and locating electromagnetic activity toward protecting communications and improving the ability of unmanned systems to operate inside contested spectrum.

This creates a broader electronic warfare architecture around the unmanned platform.

The company has not publicly released detailed performance figures for the Raydiant RF system, including frequency coverage, antenna gain, transmission power, resistance to specific jamming techniques or effective communication ranges. Those parameters will be important in assessing how the technology performs outside controlled test conditions.

Minerva Integration Connects EW With Mission Management

A significant element of the acquisition is the planned integration of Raydiant RF technology into Minerva, STARK’s mission management software.

STARK says the integration will provide operators with a clearer picture of activity in the electromagnetic spectrum and allow unmanned systems to respond to threats while remaining operational across air, land and maritime missions.

This is important because electronic warfare is increasingly becoming a software and data problem as well as a hardware problem.

A platform may have capable antennas, radios and sensors, but those components become more useful when their information is combined with mission data and used to make rapid decisions. NATO has similarly identified the need for better spectrum awareness, intelligent spectrum management and resilient communications in contested environments.

For autonomous systems, the challenge is even greater. A remotely operated platform cannot always depend on a continuously available high-bandwidth connection. Its communications architecture therefore has to account for degraded links, intermittent connectivity and deliberate attempts to disrupt or exploit transmissions.

Acquisition Reflects a Wider NATO Requirement

The STARK-Raydiant RF deal comes as NATO and its member states place increasing emphasis on operations in contested electromagnetic environments.

NATO’s Defence Innovation Accelerator for the North Atlantic identified contested electromagnetic environments as one of its 2026 challenge areas. The program specifically highlighted technologies for spectrum analysis, resilient data links, navigation, sensing and communications that can continue functioning under interference and deliberate jamming.

NATO’s Allied Command Transformation has also identified the connection between electronic warfare and unmanned systems as a major lesson from the war in Ukraine. Its assessment notes that unmanned systems depend on sensing, communications and navigation, all of which can be disrupted through control of the electromagnetic spectrum.

That creates a direct technical requirement for manufacturers such as STARK.

Cheap and scalable unmanned systems only provide operational value if enough of them can continue to sense, communicate, navigate and execute missions after an adversary begins active electronic attack.

STARK Adds Communications Expertise to Its Unmanned Portfolio

The acquisition also gives STARK greater control over a part of the unmanned system stack that is often supplied by separate technology providers.

Instead of treating the communications link as an independent subsystem, STARK can integrate radio frequency hardware, antennas, electronic warfare sensors and mission software around the same platform architecture.

That could simplify development and allow the company to optimize electromagnetic performance alongside airframe, autonomy and mission requirements. However, the acquisition itself does not demonstrate that the resulting systems have achieved a specific operational capability. Further testing and integration will be necessary to establish performance against representative electronic warfare threats.

STARK said Raydiant RF founder Luca Steinweg will become its Head of Communications/Electronic Warfare and lead the new unit. Raydiant RF’s four-person engineering team will also join STARK.

What The Acquisition Means For Unmanned Warfare

The central issue is survivability in the electromagnetic domain.

Future unmanned platforms will increasingly have to operate in environments where communications can be detected, navigation signals can be denied and radio links can be actively attacked. NATO’s current innovation programs reflect that requirement, with dedicated work on both contested electromagnetic environments and autonomous systems.

For STARK, integrating Raydiant RF could allow the company to address several of those problems within a common architecture.

The immediate focus is not a new aircraft or a new weapon. It is the infrastructure that allows unmanned systems to remain connected, aware and controllable when the electromagnetic spectrum is being actively contested.

That makes the Raydiant RF acquisition a technology and integration move rather than simply a conventional corporate expansion. Its value will ultimately depend on how effectively STARK can translate RF engineering, directional communications, electronic warfare sensing and AI-enabled mission management into systems that remain functional under real-world interference.

STARK Raydiant RF Acquisition: Key Facts

Bottom Line

STARK’s acquisition of Raydiant RF strengthens the company’s position in an increasingly important part of unmanned warfare: operating effectively when the electromagnetic spectrum is contested.

Raydiant RF adds specialized RF, antenna and software-defined radio expertise, while STARK provides established unmanned platforms and the Minerva mission management architecture. The planned integration with R-Zero and Minerva gives the company a path toward combining spectrum reconnaissance, resilient communications and mission-level electronic warfare functions.

The acquisition does not by itself establish the operational performance of the resulting systems. That will depend on testing against realistic jamming, detection and geolocation threats.

But the direction is consistent with a broader NATO requirement for unmanned systems that can continue operating when communications and navigation cannot be assumed to remain available. In that environment, electromagnetic resilience is becoming a core design requirement rather than an optional capability.