1.AG-30 is a multi-star multi-frequency GNSS measurement antenna that supports the reception of L1/L2 band satellite navigation signals of for Beidou II, for GPS and for GLONASS. 2.It can be widely used in high-precision navigation and positioning occasions such as geodetic surveying and mapping, marine surveying, precision agriculture, deformation monitoring, etc. The bottom of the product is equipped with 3 magnets and a standard 5/8-11 large nut for easy installation. 3.The multi-feed point design ensures the right-hand circular polarization and phase center performance, and reduces the impact of measurement errors. 4.The unique antenna structure design improves the low-elevation multipath suppression performance and the maximum gain of the antenna. 5.The low-noise amplifier adopts pre-filtering technology to effectively suppress out-of-band interference signals and improve the reliability of the system. The shell is IP67 protected, which provides a guarantee for the long-term field operation of the antenna. Main technical indicators (typical) Patch Architecture:Dual Four-point-feed, Signal-layer Patch Supported positioning signal bands: GPS:L1/L2/L5 BDS:B1/B2/B3 GLONASS:G1/G2/G3 Galileo:El/E5a/E5b/E6 L-Band Peak Gain:≥5.0dBi Fc Polarization:RHCP Axial Ratio zenith:≤1.5dB Azimuth Coverage:360° Impedance:50 ohm Phase-center accuracy:≤2.0mm Phase-center repeatability:≤1.0mm LNA Frequency Range:1164MHz-1300MHz/1525MHz-1621MHz LNA Gain: 40±2.0dB (Typ. 25°C) Group Delay variation:≤5ns Noise Figure: ≤2.0 dB 25°C , Typ.(Pre-filtered) Output VSWR:≤1.8:1 typ. 2.0:1max Operation Voltage:3.0-16.0V DC Operation Current:≈45mA Mechanicals & Environmental Connector:TNC ( Female) Operating Temp:-40℃-+85℃ Storage Temp:-45℃-+85℃ Humidity:95% No-condensing Waterproof:IP67 Due to different batches, there may be differences in product appearance and printed text, which will not affect use Colour:White Material:PC+PBT Package Contents: 2 x GNSS measuremen