FM antenna ,stackable 2 or more antennas ,Funcional with multi-channel combiners. Omnidirectional pattern ,7/16 female connector Option N female or 7/8, High perfomance ,Deumontable for economical shipping ,Special treatment Stainless steel, TIG weld Broadband ,87,8-108 Mhz broadband. Nickel plated nuts (stainless steel)to avoid stuck nuts, stainless steel screws. Light weight (5 Kgrms). Lightning protect (grounded)