Calian GNSS has added another precision tool to its Accutenna family with the release of the AC4990EXF-114, a quad-feed, full-band antenna that extends the company’s expertise in low-multipath, stable-phase performance.
Built on Calian’s Accutenna 4 architecture, the antenna maintains phase-center variation within two millimeters and delivers clean, repeatable carrier-phase measurements, capabilities that surveyors, autonomous systems, and precision agriculture operators are looking for. Its broad full-band coverage and advanced filtering reduce noise and multipath bias, making it a reliable option for real-world installations, from UAVs to fixed monitoring stations.
“We’re all about precision,” said Ken MacLeod, Director of Product Management at Calian GNSS, speaking to Inside GNSS at this year’s InterGEO in Frankfurt. “We’re delivering the kind of repeatable carrier-phase performance surveyors, autonomous platforms and precision-agriculture systems are looking for.”
MacLeod said antenna performance is no longer just about accuracy; it’s about system confidence, especially in multi-constellation and multi-frequency applications where integration errors can quickly propagate. “High-precision users are demanding antennas that can keep up with modern GNSS receivers – full-band, low-noise, and predictable,” he said.”The AC4990EXF-114 is designed to make sure what your receiver sees truly represents the sky, not the environment around it.”
Growing family
The AC4990EXF-114 joins Calian’s recently launched CRPA CR8894SXF+, a four-element controlled-reception pattern antenna introduced in June 2025. The CR8894SXF+ brings Calian’s eXtended Filtering (XF+) technology to one of GNSS’s most pressing challenges – maintaining signal lock under interference and jamming.
Designed for dual-band operation (L1/L2, E1/E5b) and offering up to 80 dB of out-of-band rejection, the antenna supports two independent low-noise amplifier channels and includes a built-in monitoring interface reporting jammer direction and system status in real time. Targeted at defense, marine, and critical-infrastructure applications, the CR8894SXF+ expands Calian’s portfolio from precision measurement into protection-grade positioning.
Together, these two antennas demonstrate Calian GNSS’s broadened strategic reach, from high-precision survey and autonomous-platform markets to high-resilience, mission-critical domains.
“We’re seeing increased awareness of GNSS vulnerability, not only in military applications but across commercial sectors that depend on timing and navigation integrity,” MacLeod said. “As we’ve seen with disruptions and signal jamming incidents around the Baltic, reliable GNSS infrastructure is no longer optional.”
Delivering a next-generation precision antenna and a hardened CRPA system within the same year, Calian underscores its evolution from component supplier to systems enabler. Ottawa-based design and local manufacturing give it agility in a market demanding both technical performance and supply-chain trust. The result is a growing GNSS arsenal built not just for accuracy, but for assurance in increasingly contested environments.
