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Vesper Marine VHF / AIS Antenna Splitter

  • Applications: All AIS Transponders and Receivers
  • Function: Enables AIS to Share a Single Antenna with VHF and AM/FM Radio
  • Power: 12 - 24 Volts DC, Includes Built-in Low Noise Amplifier
  • Item #: 
    Vesper Marine
    Model #: 


    Shipping Weight: 
    0.65 Lbs.
    List Price: 
    Our Price:
    Status:    null In Stock

    Quantity : 


    Package Includes:

    • Vesper AIS VHF Antenna Splitter
    • Installation Guide
    • Power Cable: 2 Meter (6.5')
    • (2) Patch Cables: 2 Meter (6.5') PL259


    • This unique Vesper Marine splitter is the only one that provides signal gain, improving AIS reception and increasing range
      • The Vesper Marine splitter has a built-in low noise amplifier
      • Important to increase the receive range from the increasing number of low power AIS SART and MOB devices.
    • Applications: All Transponders and Receivers
      • Designed to work with any AIS transponders with unique integration features for the WatchMate Vision and the WatchMate 850 (Sold Separately)
      • VHF-in-use indicator appears on the screen of the WatchMate Vision and the WatchMate 850 whenever the VHF radio is being used
    • This splitter provides a convenient and intelligent junction box for VHF, AIS and AM / FM break out points
    • Uses standard PL259 patch cables
    • Very compact and easy to install with built-in mounting flanges
    • (4) Status LED's (power, VHF transmit, AIS transmit, antenna quality)
    • Provides AM/FM radio connection
    • Fail-safe - VHF can always transmit even if the power to the splitter fails
    • The unique antenna quality LED will indicate a problem with the antenna, cable or installation
    • Low power consumption
    • Works with both 12/24 volts
    • Allows VHF radio to have priority
    • Waterproof IPx7 rated
    • Quality construction made specifically for marine use


    • RF Performance: Frequency Range 156MHz to 163MHz
    • Operating temperature: -25° C to +55° C (-13° F to 131° F)
    • Overall Size (Including connectors): 135 mm Long x 107 mm Wide x 56 mm Deep (5-5/16” x 4-13/64“ x 2-13/64”)
    • VHF / AIS Connectors: VHF & AIS Connectors SO-239 (UHF)
      • Requires (2) appropriate length standard 50 ohm patch cables with PL-259 plugs
        • (2) 2 meter (6.5 feet) Cable Included
    • AM / FM Connectors: BNC
      • Optional cable available BNC to Motorola plug (Sold Separately)
    • Power Supply: 12 - 24 Volts DC
    • Power Consumption: 0.8 Watts nominal
    • AIS Receive Gain: 12dB
    • Insertion Loss VHF RX 1.5dB / VHF TX 1dB / AIS TX 1dB
    • AIS Sensitivity, with WMX850 Transponder: -119 dBm, 6dB improvement (WMX850 Transponder Sold Separately)
    CA Prop65 warning

    Shakespeare Centerpin Gold-Plated PL-259 Connector
    Item #: 255016
  • Type: Self-Crimping
  • Orientation: Male, Sold Individually
  • Function: Installation of PL-259 Cable, Material: Gold-Plated Brass
  •  Include
    Model #:
    Shakespeare Centerpin Gold-Plated Right Angle
    Item #: 255054
  • Type: Screw-on, PL-259 to SO-239 Right Angle Adapter
  • Orientation: Male /Female, Sold Individually
  • Function: Allows for Right Angle Connection, Gold Plated
  •  Include
    Model #:
    Shakespeare 5215-AIS Masthead Squat Body Antenna
    Item #: 257469
  • 3 Foot Stainless Steel Whip
  • VHF Marine Band 3dB
  •  Include
    Model #:
    Vesper Marine AM / FM Antenna Patch Cable
    Item #: 258470
  • Cable for AIS VHF Antenna Splitter
  • Includes (1) Standard BNC Connector and (1) Motorola AM/FM Plug
  • Length: 6 Feet
  •  Include

    Model #:
    Vesper Marine Antenna Patch Cable
    Item #: 260133
  • Applications: AIS / VHF Antenna Splitter *
  • Length: 2 meters (6.5 feet), 50 Ohm cable
  • Includes (2) PL259 connectors
  •  Include

    Model #:
    Shakespeare 4' 3dB AIS Broadband VHF Antenna
    Item #: 257971
  • (1) Section
  • For AIS Transceivers
  •  Include
    Model #:
    Shakespeare Galaxy 5396-AIS Little Giant Antenna
    Item #: 256678
  • Type: Broadband VHF 3dB
  • Height: 4 Feet, Material: Commercial-Grade Fiberglass Construction
  • Includes 20 Feet of RG-8/X Cable and a PL-259 Connector
  •  Include
    Model #:
    Shakespeare ART-3 Antenna / Radio Tester
    Item #: 256351
  • Tests Radio Receiver Function, Output Power and VSWR (Antenna Efficiency)
  • Power: Internal Battery (Included) or 12 Volt DC
  • Frequency Range: 155-158 MHz, RF Power Scale: 0 to 30 Watts
  •  Include
    Model #:

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