AIS Antenna with Supplied L Bracket & 66' Coax CableThe Automatic Identification System (AIS) is a monitoring system of naval traffic, useful for navigation safety with difficult meteorological conditions (fog or nocturnal navigation). The AIS system operates on 2 expressly dedicated VHF channels (161.975 and 162.025 MHz) and allows the user to receive real time information about the traffic in the surrounding area.ELBA AIS is a 3dB gain AIS antenna designed for Sailboats: it is 38" in length and is very easy to be installed thanks to the supplied "L" bracket. With its black strong fiberglass whip and integrated 66' RG58C/U coax cable, it's the best choice to have stable AIS performance under any navigation conditions.Specifications:Frequency range: 161,975 - 162,025 MHzGain average: 3 dBImpedance: 50 ohmsPolarization: VerticalSWR: a 1.4 at 162 MHzMax input power: 50wDC ground: Reads 10K ohmsAntenna length: 38"Antenna weight: 6.2ozTermination: CableWARNING: This product can expose you to chemicals including LEAD which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.