Frequency Range:VHF 136-174MHz 2-Meter ; VSWR:< 1.5 ; Gain:2.5dBi ; Maximum Power Input-watts:150W. Length :17.8";Impedance: 50Ω [stainless steel flexible whip]Antenna requires no tuning! The whip mast is made of stainless steel.Well-made materials to ensure the antenna is durable and good at receiving and transmitting. VHF NMO Antenna Work for Motorola Kenwood Icom Vertex Blackbox HYT Hytera Mobile Radios.Fit for NMO mount base or nmo antenna mount bracket. Specification:

NMO CONNECTOR: International standard NMO connector;

Frequency Range:136-174MHz

Band width:4MHz

Impedance:50Ω

VSWR:< 1.5

Gain:2.5dBi

Polarization:Vertical

Maximum Power Input-watts:150W

Lighting Protection:Direct Ground

Radiation:Omni

Packing include:

1*136-174Mhz VHF NMO Antenna(not include the mounting bracket.)