Frequency Range:136-174MHz<br><br> Band width:4MHz<br><br> Impedance:50<br><br> VSWR:< 1.5<br><br> Gain:2.5dBi<br><br> Polarization:Vertical<br><br> Maximum Power Input-watts:150W<br><br> Lighting Protection:Direct Ground<br><br> Radiation:Omni<br><br> Packing include:<br><br> 1*136-174Mhz NMO Antenna <br><br>