电气规格频率范围------------------144 / 435MHz阻抗------------------------- 50ohm vswr ---------------------------少于1.5收获----------------------------- 2.15dbi / 3.5dbi极化---------------------------------Vertical Radiation------------------------------------ Omni Lighting Protection----------------------- Direct Ground Maximum Power Input-watts--------- 50 W MECHANICAL SPECIFICATIONS Height----------------------------------------- 505±5 mm Diameter of Bedrock--------------------- Ø33mm Cable length/Type------------------------- 3m/RG-174 Cable Termination------------------------- BNC-male Radiating Element Material------------ steel