The AT600 is ComNav's full-performance choke ring GNSS antenna, built around a 3D choke-ring ground plane that rejects multipath signal reflections for cleaner, more repeatable positioning. It tracks the complete range of modern satellite systems (GPS, GLONASS, BeiDou, Galileo, QZSS, IRNSS and SBAS/L-Band) with sub-millimetre phase-centre stability, making it well suited to CORS stations, deformation monitoring and other applications where long-term reference-point accuracy matters. An IP67-rated housing and integrated low-noise amplifier let it hold up to continuous outdoor exposure.