Icom M400BB Black Box VHF Radio

Binnacle.com #:  45179
View all Icom Inc. Products in VHF Marine Radios - Fixed Mount
Icom M400BB Black Box VHF Radio

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A no-compromise, space-saving marine Class D VHF radio with a two-piece "black box" configuration.
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Binnacle.com:   #45179
Brand:  Icom Inc.
MFG Part#:   IC-M400BB
  MAP Price: US$399.99

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Icom IC-M400BB Black Box Transceiver - Icom Quality. Small Footprint.

The IPX7 Icom IC-M400BB consists of a two-piece "black box" configuration. All function controls including DSC operation can be made from the supplied Black COMMANDMIC IV HM-195B. The IC-M400BB "black box" RF unit can be installed in an out-of-sight place, saving valuable space on the console or nav station.

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. 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.

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

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.

When connected to an external GPS receiver, current position and time are shown on the COMMANDMIC IV display. When receiving DSC information from another vessel, the radio can also transfer it to a navigational device via NMEA 0183 connectivity. When connected to an optional MA-500TR Class B AIS transponder, the AIS target call function allows you to set up an individual DSC call from the MA-500TR.


  • 25W output power
  • All 55 marine channels
  • MarineCommanderTM compatible
  • AquaQuakeTM water draining function for HM-195B
  • IPX7 submersible protection both for IC-M400BB and HM-195B (1m depth for 30 minutes)
  • Dual/tri-watch function for monitoring Ch.16 and/or call channel
  • Priority and normal scan

  Icom IC-M400BB Instruction Manual

  Icom IC-M400BB Brochure

IC-M400BB Specifications

Frequency Range
  Ch. 70
Usable channel groups INT, USA, CAN and WX channels
Type of emission 16K0G3E (FM), 16K0G2B (DSC)
Power supply requirement 13.8V DC nominal
(11.7-15.9V DC)
Current drain (at 7.4V DC)
  Tx (at 25W output)
  Rx (Max. audio)
5.5A Max.
3.5A Max.
Operating temperature range

-20°C to +60°C; -4°F to +140°F
Antenna Impedance 50Ω (SO-239)
Dimensions (W×H×D)

216×79×125mm; 8.5×3.11×4.92 in
67.5×144.5×37mm; 2.66×5.69×1.46 in
Weight (approx.)

830g; 1.83 lb
400g; 14.1 oz
NMEA in/out formats RMC, GGA, GNS, GLL, DSC, DSE
Output power (Hi/Low) 25W, 1W (High, low)
Max. frequency deviation ± 5.0 kHz
Frequency tolerance ±10ppm
Spurious emissions Less than -70dBc (at 25W)
Ch. 70 

0.22μV typical (at 12dB SINAD)
-5dBμ emf typ. (1% BER)
Squelch sensitivity Less than 0.32μV
Adjacent Channel Selectivity
Ch. 70 

More than 70dB
More than 73dBμ emf (1% BER)
Spurious response
Ch. 70 

More than 70dB
More than 73dBμ emf (1% BER)
Ch. 70 

More than 70dB
More than 68dBμ emf (1% BER)
Hum and noise ratio More than 40dB
Audio output power 
Internal speaker
External speaker

More than 2W (HM-195B/SW)
More than 10W (RX Speaker)

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Money Back Guarantee
Guarantee You may return your purchase to us (with a return authorization number - use this form) within 30 days and we will refund the purchase price of the product. Items which are cut to order (rope, wire etc), software, chart cards and printed materials (paper charts, books) are not returnable.
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