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    Icom M510BB GW 21 Black Box VHF w/White Command Mic 3 Command Mic Ports [M510BB GW 21]

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    M510BB GW 21 Black Box VHF with White Command Mic & 3 Command Mic Ports

    Icom’s M510BB is perfect for boats that need AIS to receive functionality without taking up precious helm space. The supplied white CommandMic™ provides all the safety and communication functions for commercial and leisure boaters.

    Clean Installation for Limited Helm Space

    The M510BB consists of a CommandMic™ and a black box RF unit. Use the CommandMic™ for all operations, including DSC. Install the RF unit out-of-sight, placing it up to 60 ft (18.3 m)* away from the CommandMic™.

    *Two OPC-1541 cables are required for the 60 ft installation

    CommandMic™ Stations

    Add up to two additional CommandMic™ microphones for boats requiring two or three comms stations. Extend communication points around the boat including the cockpit, flybridge, and tower. Access the intercom functions for one-to-all or one-to-one communications on the boat.

    AIS Receive

    The M510BB includes an integrated AIS receiver, perfect for remote station information via the CommandMic™, or integrated into the NMEA 2000® bus to display radar and chart plotter information on an MFD (Multi-Function Display).

    DSC Functionality and Remote Control

    In addition to the conveniently located DSC button on the back of every CommandMic™, the M510BB introduces a dedicated DSC Remote Control (EN 300 338-8 compatible) terminal, allowing a connection to an external device to centralize emergency communications control.

    NMEA200® and NMEA 0183-HS®

    The NMEA 2000® network provides plug-and-play data communication to interconnect other marine equipment, such as an MFD (Multi-Function Display). The radio can send AIS, GNSS (GPS) position, DSC call, and radio channels to other equipment.

    Class D DSC Functionality

    On the back of every CommandMic™ is a conveniently located DSC button. Once triggered, the M510BB transmits a DSC alert signal to nearby vessels with the MMSI* and GPS location of your vessel. *MMSI number must be obtained and programmed for each vessel/radio.

    Loud One-Way RX Hailer

    The built-in 15W amplifier increases the audio output of an external hailer speaker. The one-way RX hailer function enables you to broadcast radio traffic through the hailer speaker to listen to radio traffic on the deck or tower. You can also hear foghorn patterns from the hailer speaker.

    Active Noise Cancelling

    The Active Noise cancellation function digitally removes background noise from transmitting and receiving audio to provide clear communications in noisy maritime environments.


    • AquaQuake™ function
    • Anchor watch function


    • Command Mic Color: White
    • Remote Stations: Up to 3
    • Output Power: 25W
    • GPS: Internal GPS GNSS Receiver, with external GPS antenna connection
    • NMEA: NMEA 2000®/ NMEA 0183® -HS
    • Waterproof Rating: IPX7
    • Frequency Range: Tx - 156.025 157.425 MHz / Rx - 156.050 163.275 MHz / DSC - 156.525 MHz
    • Usable Channels: USA, INT, CAN, WX channels
    • Type of Emission: 16K0G3E (FM), 16K0G2B (DSC), 16K0GXW (AIS)*
    • Power Supply Requirement: 13.8 V DC nominal (11.7 15.9 V DC) (Negative ground)
    • Current Drain (at 13.8 V DC): TX Max. power - 5.5 A Max. / RX Max. audio - 1.5 A (One CommandMic™) 4.0 A (Two CommandMic™ and RX hailer)
    • Operating Temperature Range: –20°C-60°C /  –4°F-140°F
    • Antenna Impedance: 50 Ω nominal
    • Dimensions (W x H x D) (Projections Not Included): RF unit - 216 × 79 × 113 mm; 8.5 × 3.1 × 4.4 in. / CommandMic™ - 67.5 × 144.5 × 37 mm; 2.7 × 5.7 × 1.5 in.
    • Approximate Weight: RF unit - 890 g; 2 lb. / CommandMic™ - 400 g; 14.1 oz

    Transmitter Specifications:

    • Output Power (at 13.8V DC):  25 W, 1 W (high, low)
    • Max. Frequency Deviation: +/- 5 kHz
    • Frequency Tolerance: +/- 0.5 kHz
    • Spurious Emissions: Less than –70 dBc (high power), Less than –56 dBc (low power)
    • Residual Modulation: More than 40 dB
    • Adjacent Channel Power: More than 70 dB

    Receiver Specifications: 

    • Sensitivity: FM (at 12dB SINAD): 0.22 μV typical / DSC (at 1% BER): –7 dBμ emf typical
    • Adjacent Channel Selectivity: FM - More than 70 dB / DSC (1% BER) - More than 73 dBµ emf
    • Spurious Response: FM - More than 70 dB / DSC (1% BER) - More than 73 dBμ emf
    • Intermodulation: FM - More than 75 dB / DSC (1% BER) - More than 68 dBµ emf
    • Hum and Noise: More than 40 dB
    • Audio Output Power: CommandMic™ - More than 2 W (4 Ω, 10% distortion) / Rx hailer - More than 15 W (4 Ω)


    • AIS: Yes
    • Built-In GPS: Yes
    • Color: White
    • Hailer: Yes
    • Intercom Capability: Yes
    • NMEA 2000: Yes
    • Remote Mic Capable: Yes
    • Box Dimensions: 6"H x 9"W x 10"L WT: 5 lbs
    • UPC: 4909723164487

    Brochure (pdf)