Product Parameters HA-301A GNSS antenna adopts eight-arm coupling and four-feed point feeding technology, supports L1 and L2 dual-band satellite navigation signal reception of Beidou II, GPS, GLONASS and GALILEO systems, built-in low noise amplifier, and adopts two-stage filter , good out-of-band suppression and strong anti-interference ability, ensuring normal operation in harsh electromagnetic environments. Meet the needs of current multi-system compatibility and high-precision measurement. The antenna adopts multi-arm spiral technology, which ensures the performance of right-handed circular polarization and phase center, and reduces the influence of measurement errors; The antenna unit has the characteristics of high gain and small gain roll-off, and has a good reception effect on satellite signals at low elevation angles; Compact low noise, high gain amplification and excellent out-of-band rejection; Electrostatic protection: 15KV (air discharge); Small size, light weight, easy to carry and install. Main technical indicators (typical) Patch Architecture:Quadrifilar Helix Supported positioning signal bands BDB1/B2/B3 GPSL1/L2 GLONASSG1/G2 GalileoEl/E5b Peak Gain*:2.0 dBi Polarization:RHCP Axial Ratio@zenith:1.5dB Azimuth Coverage:360° Impedance:50 ohm LNA Frequency Range:1197MHz~1278MHz/1559MHz~1606MHz LNA Gain*:35±3.0dBTyp. @25°C Noise Figure*:1.5 dB@25°C , Typ. Output VSWR:1.8:1 typ. 2.0:1max Operation Voltage:3.0~6.0V DC Operation Current:45mA Mechanicals & Environmental Dimension:71mm*27.5mm Connector:SMA-J Radome:ABS+PC Operating Temp:4085 Storage Temp:4585 Humidity:95% No-condensing Waterproof:IP67