Calian GNSS (Formerly Tallysman Wireless): With global headquarters and manufacturing in Ottawa, Canada, Calian GNSS is a leading manufacturer of high-precision GNSS and Iridium antennas, anti-jamming and smart antennas (antenna with built in GNSS receiver) and accessories supporting a broad range of satellite-based positioning, and navigation applications.

We are known for Accutenna®, VeraPhase®, VeroStar® and Helical antenna technologies. These technologies are among the highest performance antennas (low axial ratios, high multi-path signal rejection, tight PCV) in their size and weight, while setting economical price points. Calian’s antennas are the antennas of choice for a wide variety of applications.