Feature: 1. The antenna adopts a single-layer multi-feedpoint ultra-wideband design, so that the phase center elevation difference is the smallest in the entire working frequency band. 2. The antenna unit has high gain and small gain roll-off, and has reception effect on satellite with low elevation angles, ensuring that the satellite can still be normally collected in some occasions where the occlusion is severe. 3. Low noise uses pre-filtering technology to effectively suppress out-of-band interference and improve system reliability. 4. Reactive network suppression technology effectively reduces the impact of multipath on measurement accuracy. 5. The waterproof and UV-resistant cover provides a guarantee the antenna to work in the field a long time. 6. The external full-band GNSS measuring antenna supports satellite navigation reception of Beidou II, GPS and GLONASS systems, and meets the needs of current multi-system compatibility and high-accuracy measurement. It can be widely used in geodesy, ocean measurement, agriculture, and deformation. Monitoring and other high-accuracy navigation and positioning occasions. Specification: Item Type:Antenna Receiver Supported Satellite BDS: B1, B2, B3; GPS: L1, L2, L5; GLONASS: G1, , G3: Galilco: El, E2, E5a, E5b, E6, L-Band Working Frequency Band: 1154MHz-1300MHz; 1551MHz-1615MHz Impedance Matching: 50 Ohms Polarization Mode: Right Circular Polarization Antenna Shaft Ratio: ≤3dB Horizontal Coverage Angle: 360 Degrees Phase Center Error: ≤2.0mm Low Noise Gain: 40±2dB Noise Figure: ≤2.0dB Output Standing Ratio: <2.0:1 In-Band Flatness: ±2dB Working Voltage: 3.0~16VDC Working Current: ≤35mA Working Temperature: -40°C~+80°C Storage Temperature: -45°C~+85°C Humidity: 95% Non-Condensing Level : IP67 Antenna Size : Φ152 x 67.9mm / 5.98 x 2.67in Output Interface : TNC Weight: ≤430g/15.17oz Package List: 1 x Receiving Module 1 x Base 1 x 3 meters Feeder