Trimble Zephyr 3 Base Antenna

The Trimble Zephyr™ 3 Base Antenna is a top-of-the-range GNSS base antenna engineered for fixed reference stations, control networks, and GNSS infrastructure applications requiring millimeter-level precision. Integrated with the Trimble Stealth™ ground plane, the Zephyr 3 Base is specifically designed to minimize ground-based multipath interference while maintaining robust low-elevation satellite tracking and millimeter phase center repeatability.

Offering comprehensive support for current and emerging GNSS signals—including GPS modernization, GLONASS, Galileo, BeiDou, QZSS, IRNSS, OmniSTAR, Trimble RTX™, and SBAS—the Zephyr 3 Base delivers reliable, high-quality tracking performance across global environments. With advanced LNA technology, additional Iridium and Japanese LTE filtering, and 50 dB signal gain, it ensures dependable operation even in challenging RF conditions. The low cross-sectional profile reduces wind loading, while the fully sealed IP67-rated housing provides long-term durability for permanent or semi-permanent installations.

Key Features

• Trimble Stealth™ ground plane for enhanced multipath rejection

• Comprehensive multi-constellation GNSS and MSS support

• Robust low-elevation satellite tracking

• Millimeter phase center repeatability for control-grade accuracy

• 50 dB signal gain with advanced LNA and interference filtering

• IP67-rated enclosure with 5/8”-11 mount for fixed installations

Ideal For

Survey control networks, CORS installations, monitoring applications, and GNSS infrastructure deployments requiring stable phase center performance, reduced multipath, and long-term environmental durability.