... , Vertical Polarization, Omni directional pattern, Stainless steel Band II dipole, Broadband 87.5~108 MHz, 1.5 dBd gain, ... range 87-108MHzMaximum wind speed225km/hGain(relative half-wave dipole) 1.5dBdWind load32kg.150Km/hVSWR<1.10Mast diameterφ50 ... Internal parts:CopperMatrixThe antenna is especially suitable for arrayFixture: Hot-dip zinc Steel Input interface 7/16' or 7/8' Dipole Antenna