GPS L1 L5 Dual-Band BD GLONASS Helix Antenna High-Precision GNSS Satellite Navigation Signal Receiv The antenna adopts multi arm spiral technology to right circular polarization and phase center performance, reducing the impact of measurement errors; The antenna unit has the characteristics of high gain and small gain roll off, which is good for receiving low elevation satellite signals; Exquisite low noise, high gain amplification, and excellent out of band suppression; Static electricity protection: 15KV (air discharge); Small size, light weight, and easy to carry and install. Main technical indicators (typical) Patch Architecture:Quadrifilar Helix Supported positioning signal bands BD:B1/B2a; GPS:L1/L5; :El/E5a GLONASS:L1 Gain*:2.0 dBi Polarization:RHCP Axial Ratio@zenith:1.5dB Azimuth Coverage:360 Impedance:50 ohm LNA Frequency Range:1176.4520.46MHz/1559MHz~1606MHz LNA Gain*:353.0dB(Typ. @25C) Noise Figure*:1.5 dB@25C , Typ. Output VSWR:1.8:1 typ. 2.0:1max Operation Voltage:3.0~6.0V DC Operation Current:45mA Mechanicals & Environmental Connector:SMA-J Radome:ABS+PC Operating Temp:-40~+85 Storage Temp:-45~+85 Humidity:95% No-condensing Waterproof:IP67 Colour:Black Material:plastic Package Contents: 1 x Antenna(Random Tags , don't accept the specified) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.