Beam External Antenna Mast or Pole Mount - Marine Grade*Required Cables sold separatelyThe RST210 is an omni-directional passive antenna for easy installation in any location.  Designed for maritime applications, the RST210 has a rugged design making it ideal for harsh weather conditions. Features:Iridium Approved - Best suited for Maritime applicationsDesigned for tough weather conditions (IP66)Mounts on any US-style Mounting Bracket with 1"-14NF threaded stud (not supplied)12-Month WarrantyAntenna Size - 3.7"D x 6.0"HFrequency - 1616-1626.5 MHzPolarization - Right Hand CircularAxial Ratio -  Impedance - 50 OhmsVSWR -  Connector - TNC-FCable - No cables supplied