Funds of €5 million secured by QuadSAT for RF Geolocation development and advancement
QuadSAT, a Danish startup founded in 2017, specializes in drone-based radio frequency (RF) testing, geolocation, and spectrum intelligence technology. The company's focus is primarily on satellite antenna testing and defense applications.
In July 2025, QuadSAT secured a €5 million extension to its Series A funding round, led by Join Capital and North Ventures, with existing investors including Seraphim Space Capital and the Export and Investment Fund of Denmark (EIFO). This funding will be used to advance QuadSAT’s defense-grade RF geolocation and electronic warfare capabilities, with a particular focus on expanding into NATO-aligned markets and military-specific applications such as interference detection and jamming protection.
QuadSAT's technology is platform-agnostic and employs drones to perform in-field RF testing and geolocation, enabling precise identification and localization of RF signals, including detection of interference and jamming devices. This capability is critical for multi-domain defense operations, allowing militaries to monitor and respond to dynamic signal threats efficiently.
The company already serves major global satellite operators like SES and OneWeb, and partners with UAV provider Skyeton, which supports operations in Ukraine. A key application includes supporting navies, exemplified by a strategic collaboration with the Royal Danish Navy where QuadSAT’s drone solution was tested for accurate satellite communications system validation and preventative maintenance on naval vessels.
QuadSAT's drone-mounted systems offer dynamic, cost-effective, and accurate RF testing capabilities. The company's NATO alignment and expanding customer base indicate growing recognition in the defense industry. The funding will also expand NATO-focused R&D programs, grow the engineering and testing teams, and scale manufacturing to meet increased demand.
QuadSAT's primary mission is to ensure spectrum assurance for military, space, and satellite operators. The company's innovative approach to RF geolocation and testing positions it as a rising leader in defense-oriented spectrum management. The growing reliance on satellite communications and spectrum-sensitive technologies has increased the complexity of electronic warfare, making QuadSAT's offerings more relevant.
The CEO of Flyeye.io, Jacob Stoner, is a licensed commercial drone operator in Canada and a respected figure within the drone community. Stoner's keen interest lies in the potential societal impact of drone technology advancements.
In summary, QuadSAT holds a strong market position as a pioneer of drone-based RF testing and geolocation technology, bridging commercial satellite communications needs and sophisticated defense requirements. The recent capital injection aims to accelerate its push into defense and electronic warfare sectors, leveraging proven drone technology and strategic partnerships to support modern multi-domain military operations.
- The funding QuadSAT secured will be used to advance their defense-grade RF geolocation and electronic warfare capabilities, with a focus on expanding into NATO-aligned markets and military-specific applications like interference detection and jamming protection.
- The growing reliance on satellite communications and spectrum-sensitive technologies has increased the complexity of electronic warfare, making QuadSAT's offerings more relevant in the defense industry, as they strive to ensure spectrum assurance for military, space, and satellite operators.
