Tenna Systems closes $13.5M seed to scale spectrum resilience
Tenna Systems, a defence and aerospace technology startup, has raised $13.5 million in an oversubscribed seed round to accelerate deployment of its software-driven tools designed to detect and pinpoint electromagnetic interference across modern battlefields and dense signal environments.
The round was led by Costanoa, with participation from Viola Ventures, Fresh Fund, 202 Ventures, and existing backers. The company said it plans to more than double headcount over the next year as it expands in the U.S. and scales deployments internationally.
Turning existing platforms into live spectrum sensors
As wireless systems proliferate across drones, satellites, ships, aircraft, and mobile devices, the electromagnetic domain has become increasingly contested by jamming, spoofing, and unpredictable interference. Tenna Systems aims to address this by transforming already-deployed assets into a distributed sensing network, using software to stitch data into a real-time spectrum view rather than relying on costly, hardware-heavy upgrades.
According to the company, its platform can identify interference and locate sources with accuracy typically within 50 to 200 metres, supporting faster operational decisions and mitigation.
Founded by SIGINT and electronic warfare veterans
Tenna Systems was founded in 2023 by twin brothers Avner Bendheim and Gabriel Bendheim, who previously worked on advanced SIGINT and electronic warfare programs. The company said its technology has been used in operational deployments with U.S.-allied forces and is supporting work with the US Army, US Air Force, and the Israel Ministry of Defence through contracts and partnerships.
Product suite for detection, geolocation, and resilience
The company’s tools include Arena for real-time monitoring, Tracer for geolocating interference sources, and Halo for embedded resilience designed to maintain connectivity under attack. Avner Bendheim described the approach as “like AccuWeather but for electronic warfare,” turning sensor data into a live map of radio-frequency conditions.
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