Marine AIS (Automatic Identification System) Vertical Outdoor Base Antenna

Specs Gain:  3 dBi SWR:  1.5:1 or Less Pattern:  Omni-directional Wavelength:  1/2 Elements:  1 Tuned:  161-162 MHz Band:  VHF Marine AIS Connector:  N Female Cable:  RG8X Cable Length:  12 Inches Height:  57" Width:  1 1/4" Weight:  1 lb 14 oz Wind Area:  0.50 Sq Feet   Features Ready Made:  There's no assembly necessary, or extra mounting parts needed.Tuned to Marine AIS:  Each antenna is tuned to the VHF Marine Automatic Identification System (AIS) at 161-162 MHz. With the proper receive equipment, this allows you to track ships in your area. This antenna can also compliment a system setup for linking to an online virtual network, such as PinkFroot's ShipFinder.DC Grounded:  A metal ground plane is not needed with this design.Enclosed Elements:  The actual antenna elements and feed point are sealed inside a UV resistant plastic radome. No need to worry about corrosion on the elements with this design.Weather Resistant:  Having the elements and feed point