Electrical Parameters Frequency (MHz):1575.42±5MHz/1561±5MHz/1609±2MHz Gain (dB):30dB±2 3dB beam width:110±10 Axial ratio (dB):<5 Polarization mode:Right-handed circular polarization Internal flatness (dB):<2(1575.42±5MHz9)<2(1561.098±5MHz)<2(1609±2MHZ) standing-wave ratio:2.0 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 wind speed (Km/h):135 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