SeaBeacon 2 System 6 RACON

300 x 300

The industry leader for reliability and accuracy 

SeaBeacon® 2 System 6, a frequency agile radar beacon (RACON), provides dependable service to all marine radars including those with modern narrow band receivers.  SeaBeacon® 2 System 6 is unequaled in frequency matching accuracy, consistency pulse-by pulse response and advanced sidelobe suppression.

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  • Features
    • Greater operational range – SeaBeacon 2 System 6 provides improvements in receiver dynamic range, receiver sensitivity, power consumption and transmitter power. Better receiver sensitivity and higher gain antennas give superior range performance with solid-state radars.
    • Available with or without pressurisation - The GMU version of SeaBeacon 2 System 6 is available with or without pressurisation. Pressurising racons with nitrogen provides added protection against the corrosive marine environment, seasonal variations in ambient temperature, pressure fluctuations, condensation and accidental submergence.
    • Dual-token sidelobe suppression – Radars are identified accurately by measuring frequency and pulsewidth. Amplitude values are used to block responses to sidelobes.
    • User selections – Operating parameters such as quiescent periods, trace length, active period, extended quiescent and standard response code (per IALA recommendations) can be programmed in the field using an optional hand-held keypad or laptop.
    • Intelligent power management – Users may program quiescent and active time intervals to match performance and power consumption requirements. To further reduce power consumption, if no local radar is detected, the racon automatically returns to its quiescent state after a four second active period. Extended quiescent state for low traffic areas and seasonal inhibit further reduce power consumption. Periodic quiescent periods allow the radar operator to view the radar screen ensuring that no targets have been obscured by a racon response.
    • Proportional scaling - Ensures length of racon trace appearing on the radar screen is generally uniform on all range settings.
    • Monitoring – SeaBeacon 2 System 6 racons can be linked, via Tideland’s NavLink®, to a manned base station for remote monitor and control functions.
    • Hazardous use rating – Available for General Marine Use (GMU), NEC Class 1 Division 2 (not pressurized), IECEx/ ATEX Category 2 (Zone 1) or ATEX Category 3 (Zone 2) for hazardous areas.
    • Compliant to - IALA Recommendation R-101 on Marine Radar Beacons (RACONS) Edition 2 December 2004.
  • Specifications
    Frequency of Operation

    X-Band - 9.3 to 9.5GHz

    S-Band - 2.9 to 3.1GHz

    Frequency Matching Accuracy - Long/Short Radar Pulses
    ± 1MHz
    Output Power to Antenna
    1.0W (30dBm)
    Pulsewidth Response

    Minimum - 50 nanoseconds

    Maximum - 2000 nanoseconds

    RACON Response Length
    4 - 80 microseconds
    RACON Response Display Scaling

    Pulsewidth (±50 ns typical) - RACON Response (±5 μsec typical)

    800 nanoseconds to 2000 nanoseconds - Selected value

    450 nanoseconds to 800 nanoseconds - 75% of selected value

    215 nanoseconds to 450 nanoseconds - 50% of selected value

    50 nanoseconds to 215 nanoseconds - 25% of selected value

    System Sensitivity

    X-Band - 50dBm

    S-Band - 50dBm

    Response Rate - Maximum (either band)
    Response Delay - Maximum (100 metres)
    667 nanoseconds
    Response Recovery Time - Maximum
    20 microseconds
    Response Code
    AZ, 0-9, NW, NE, SW, SE
    Radar Blanking
    External blanking control ports available
    Built-in System Test Monitor

    Built-in - Audible Beeper

    External A - Isolated Transistor Switch for Go/No Go

    External B - RS-232C Communications Port for monitor, control and field programming features

    Power Supply Input Voltage

    GMU - 9 - 36 nominal 12VDC

    Ex - 18 - 32 nominal 24VDC

    Lighting Protection - Surge Protection
    1 millisecond at 3000 volts
    Quiescent Power Consumption
    Nominal Power Consumption

    Light Traffic - 0.75W

    Heavy Traffic - 1.0W

    Quiescent Period
    Programmable 0 to 60 seconds
    Extended Quiescent
    Active Period
    Programmable 4 to 60 seconds
    Seasonal Inhibit
    Antenna Specifications


    Gain - 6dBi

    Polarisation - Horizontal

    Vertical Divergence - 22 degrees

    Effective Radiated Power - 4.0W


    Gain - 6dBi

    Polarisation - Horizontal

    Vertical Divergence - 22 degrees

    Effective Radiated Power - 4.0W
    S-Band Dual Polarisation

    Gain - 1dBi (Horizontal); 0dBi (Vertical)

    Polarisation - Horizontal and Vertical

    Vertical Divergence - 22 degrees

    Effective Radiated Power - 1.0 to 1.3W
    IP Rating
    Submersion Capability – Maximum Depth
    10 metres (35ft)
    Positive Pressurisation
    GMU version available with or without

    Diameter (including lift ring) - 353mm (13.9in)

    Height - 807mm (31.8in)*

    Weight (includes 4.5 metre external cable and all stainless steel mounting hardware) – GMU
    13.6kg (30lbs)*
    Base Housing
    Operating Temperature

    GMU and ATEX Category 3 - -40° C to +70° C

    IECEx/ATEX Category 2 - -40° C to +48° C

    NEC/CSA Class 1, Division 2 - -40° C to +70° C

    NOTE: Specifications are subject to change.