USA version

Black Box Transceiver When Space is at a Premium

Black Box Transceiver – Icom Quality. Small Footprint.
Icom’s M400BB is perfect for boats that need a radio but don’t have room on the helm. The M400BB consists of a two-piece black box configuration. Install the full RF black box unit in an out-of-sight place and connect the COMMANDMICIV™, HM-195 to the cockpit or flybridge. The HM-195 allows the operation of all radio functions, including DSC, radio, and hailer horn. HM-195 also utilizes the same user soft key interface for easy operation.

Space-Saving, Two-Piece Configuration

The IC-M400BB consists of a two-piece, black box configuration. All function control including DSC operation, can be made from the COMMANDMIC™, HM-195B/SW, and the RF unit, IC-M400BB, can be installed in an out-of-sight place.

New Intuitive User Interface

The new menu system is shared with Icom's latest models. The bottom line of the dot-matrix display shows the software key functions which can be toggled with the left and right buttons.

Active Noise Cancelling

The built-in bidirectional active noise cancelling reduces background noise to up to 90% and improves both your transmitted voice and incoming call. Hear and be heard more clearly.

10 W Loud Audio, Public Address and Foghorn

The IC-M400BB has a built-in 10 W amplifier that increases the audio output from an additional external speaker. The public address function allows you to make an announcement from the microphone like a loud speaker, and the foghorn can also be emitted from the external speaker.

Built-in Class D DSC

The built-in DSC watch function monitors Ch. 70 (DSC channel) activity, even while you are receiving another channel. DSC functions include: distress, individual, group, all ships, urgency, safety, position request/report, polling request and DSC test calls.

NMEA 0183®

When connected to an external GPS receiver, current position and time are shown on the COMMANDMIC display. When receiving DSC information from another vessel, the radio can transfer it to a navigational device via NMEA 0183 connectivity.

AIS Target Call with MA-510TR/MA-500TR

When connected to the optional MA-510TR/MA-500TR Class B AIS transponder, the AIS target call function allows you to set up an individual DSC call from the MA-500TR.

Other Features

  • MarineCommander™ compatible
  • AquaQuake™ water draining function (HM-195B/SW)
  • IPX7 submersible protection both for IC-M400BB and HM-195B/SW (1 m depth for 30 minutes)
  • Dual/tri-watch function for monitoring Ch.16 and/or call channel
  • Priority and normal scan
  • Supports 4-digit channels
Frequency range TX 156.025–157.425 MHz
RX 156.050–163.275 MHz
Ch. 70 156.525 MHz
Power supply requirement 13.8 V DC nominal
(11.7–15.9 V DC)
Dimensions (W×H×D)
(Projections not included)
IC-M400BB 216×79×125 mm;
8.5×3.11×4.92 in
HM-195B/SW 67.5×144.5×37 mm;
2.66×5.69×1.46 in
Weight IC-M400BB 830 g; 1.83 lb
HM-195B/SW 400 g; 14.1 oz
Current drain TX 25W output 5.5 A Max.
RX Max. audio 3.5 A Max.
Sensitivity Main 0.22 μV typical (at 12 dB SINAD)
Ch. 70 −5 dBμ emf typ. (1% BER)
Intermodulation Main More than 70 dB
Ch. 70 More than 68 dBμ emf (1% BER)
Audio output power
(at 10% distortion, 4 Ω load)
More than 2 W (HM-195B/SW)
More than 10 W (RX speaker)
RF output power 25 W, 1 W (High, low)

Applicable IP Rating

Ingress Protection Standards

IPX7 (Waterproof protection)

All stated specifications are subject to change without notice or obligation.

Supplied Accessories

  • DC power cable

* COMMANDMIC, HM-195B (black color) or HM-195SW (white color) is supplied depending on version.

Catalogs / Brochures

Brochures Name Size
IC-M400BB(USA) 4.61MB
Marine Products 6.48MB
Marine Fixed Mount Comparison Chart 1,009KB

Instruction Manual / Guides

Name Model Name Note
Instruction Manual IC-M400BB/IC-M400BBE