Electrical Parameters Frequency (MHz): GPS:L1/L5 BD:B1/B2a Glonass:L1 Galileo:E1/E5a Gain (dB):30dB±2 Axial ratio (dB):<5 Polarization mode:Right-handed circular polarization standing-wave ratio:1.5 Noise coefficient (B):2.0 DC voltage (V):3~5V Direct current (mA):10 Mechanical Parameters Size (mm):89*86mm Shell material:ABS+PC alloy Storage temperature ():-40~+85 Working temperature ():-40~+85 Environmental humidity (%):5%~95% Maximum wind speed (Km/h):200 Usage environment:outdoors Connection:N/K Pole size:100mm Material of holding pole:stainless steel