The Hemisphere GNSS A21 is designed to maintain reliable tracking of GPS, GLONASS, BeiDou, Galileo, and differential correction signals, even in challenging environments. When it is difficult to keep the antenna level or away from sources of electrical interference, the A21 delivers outstanding noise suppression thanks to its metal base, low-profile design, enhanced multipath mitigation, and the ability to filter an additional 30 dB of radio frequency interference (RFI).
The A21 provides excellent interference rejection and is specifically designed for use with Hemisphere GNSS Crescent® and Crescent Vector™ II receivers, ensuring reliable GNSS performance in demanding applications.