Model: FAGPSGlonass.55 (i)Dielectric Antenna Frequency(MHz):1575/1602 Center Frequency(MHz):1590 VSWR:1.5:1 Bandwidth(MHz):±5 Impedance(Ω):50 Peak Gain >3dBi Based on 7cm×7cm ground plane Gain Coverage >-4dBi at –90°<0 <+90°(over 75% Volume) Polarization:RHCP (ii)LNA/Filter LNA Gain (Without cable) (dBi):28 Typical Noise Figure(dB):1.5 Filter Out Band Attenuation (f0=1575.42 MHz) 7dB Min f0+/-20MHz ; 20dB Min f0+/-50MHz; 30dB Min f0+/-100MHz VSWR <2.0 DC Voltage(V):2.7/3.0/3.3/5.0/3.0 to 5.0 etc. DC Current(mA):11Max (iii)Mechanical Weight(gram)<110 Size(mm):50x38x17 Cable Length(m):2,3 etc. Connector:SMA/SMB/SMC/BNC/FME/TNC/MCX/MMCX etc. Mounting:Magnetic base Housing :Black (iv)Environmental Working Temp:-40℃~+85℃ Storage Temp:-45℃~+100℃ Vibration:Sine sweep 1g(0-p)10~50~10Hz each axis Humidity:Humidity95%~100%RH Weatherproof:100%Waterproof This is a 3V active GPS glonass antenna intended for use with the GPSDO kit used with the USRP N200/N210 Series. The antenna can also be used for the USRP E310, which has an integrated GPS(SMA to SMB adapter needed). A GPSDO locked to the GPS constellation can provide time synchronization within 50 ns of the global GPS standard and very high clock accuracy. Faster GPS signals capture, lower power consumption, stronger anti- performance and wider working voltage range. Magnetic base allows you to conveniently attach it to any metal surface. No power adapter needed: powered by the head unit. Recording your driving track, speed and longitude and latitude data. All of these data can be seen in designated player.