VHF Mounted Marine Radio




 Fixed Mount VHF and AIS Receiver Combo with NMEA 2000® Connectivity              

The M506 series gives customers the option of a full featured VHF fixed mount, radio with an integrated AIS receiver or radio with AIS plus NMEA 2000® connectivity. The M506 is packed full of features including ‘Last Call’ voice recording function, ‘Active Noise Cancelling’ technology plus Icom’s new intuitive menu-driven user interface and large dot matrix display making it really easy to use.

NMEA Award M506

M506 has received the NMEA Best VHF Radio Product Award for 3 straight years 2014-2016.

Output power:
Hailer:     25W listen back hailer
Horn/Foghorn:     Built-in
GPS:     Optional external GPS/NAV interface NMEA 01833/NMEA 2000 depending on version

Waterproof rating:

     Radio only with NMEA 0183
Radio only with NMEA 0183/2000® (front or rear mic version)
Radio with AIS receiver + NMEA 0183/2000® (front or rear mic versions)

Integrated AIS receiver
The M506’s with the integrated AIS receiver can show AIS vessel traffic information on the display. The AIS target call function allows you to easily set up an individual DSC call. The Plotter, Target list and Danger list can be toggled on the display.

​                         NMEA 2000® and NMEA 0183 connectivity
                         With the plug-and-play functionality of NMEA 2000, the M506 can easily connect to a NMEA 2000 network and                                 interconnect with other equipment. Also the NMEA 0183 input/output can be used for external GPS/NAV interface.

Section station option
The optional COMMANDMIC, HM-195B/SW provides second station capability for using the M506 from a separate cabin or tower. Most functions including DSC and AIS functions can be controlled from the COMMANDMIC and can be used as an intercom between the radio and the COMMANDMIC.

Additional features

Active noise cancelling
Last call voice recording saves the last two minutes of the last incoming call or start recording manually
Intuitive menue-driven user interface
Class D DSC (meets ITU-R M493-13)
Learn how to register your DSC radio - Watch video  |  Download DSC Quick Guide
15W audio output power with external speaker
Weather & alert channels
AquaQuake® draining function
80dB (typical) IMD and channel selectivity

Frequency range
161.975MHz, 162.025MHz
Type of emission    16K0G3E (FM), 16K0G2B (DSC)
Usable channels    USA, INT, CAN, WX channels
Power supply requirement    13.8V DC ±15%
Current drain (at 13.8V DC)
  Transmit 5.5A (25W output)
  Receive 1.5A

Operating temperature range    
–20°C to +60°C;
–4°F to +140°F
Antenna impedance    50Ω (SO-239)
Dimensions (W×H×D)
175×110×TBA mm;
6.66×3.14×TBA in.
Weight (approx.)    TBA

NMEA formats
Output  DSC, DSE

Output power    25W or 1W (at 13.8V DC)
Max. freq. deviation    ± 5.0 kHz
Frequency stability    ± 10.0ppm (–20°C to +60°C)
Spurious emissions    Less than -70dBc
Residual modulation    More than 40dB
Adjacent channel power    More than 70dB

Intermediate frequency
1st 21.7MHz, 2nd 450kHz
Sensitivity (at 12dB SINAD)    0.22µV typical
Squelch sensitivity    Less than 0.32µV
Adjacent Ch. selectivity    80dB typical
Spurious response    80dB typical
Intermodulation rejection    80dB typical
Hum and noise ratio    More than 40dB
Audio output power
at 10% distortion    10W min. with a 4Ω load (External speaker)
Applicable IP Rating

 Ingress Protection Standard
Water     IPX8 (1 m depth water for 60 minutes)
Measurement made in accordance with TIA/EIA-603. All stated specifications are subject to change without notice or obligation.

Supplied Acessories
Hand microphone, HM-205B/RB
DC Power Cable
Mounting Bracket Kit