Shakespeare Style 396-1-AIS VHF Marine AIS 4' LENGTH 3dB 4' MAST MOUNT AIS ANTENNA The 396-1-AIS has been specially designed to meet the broader bandwidth requirements of all popular AIS transceivers. Commercial-grade construction with a mast mounting sleeve. * Brass and copper elements * SO-239 connector at the base * Suggested Mount: U-Bolts included. Can be strapped to a larger mast using steel banding (not supplied) * One section * Coax cable sold separately * Shakespeare Limited Warranty: 2 years Technical Specifications: * Frequency: VHF Marine Band * Bandwidth within 2.0:1 SWR: 6.0 MHz * SWR: 1.5:1 at 156.8 MHz * Gain: 3dB * Impedance (Ohms): 50 * Gain: 3dB * Max. Input (Watts): 100 * DC Ground: no (will read open-circuit with ohmeter test) * Termination: SO-239 at bottom of antenna * Height (feet): 4 * Polarization: Vertical * Radiation pattern: Omni-directional