The Icom M424 marine VHF radio is the latest fixed mount entry from this well-known marine electronics maker to hit the market. This boat radio features basic VHF functionality as well Class D DSC capabilities, noise cancelling circuitry, and introduces a new Icom user interface.
The M424 ships with the radio and attached microphone, a plastic tilt bracket suitable for both overhead and dashboard mounting, a fused power cable, metal microphone holder, and an instruction manual.

Icom M424.
To flush mount this radio you’d have to improvise your own mounting system or purchase the Icom MB-132 flush mounting kit.
Leads extending from the back panel of this Icom marine VHF radio let you connect to an external speaker, PA speaker, and other NMEA0183 compatible devices.
The radio face measures 7-inches wide by 3.3-inches high. The radio housing extends less than 4.5-inches from the front panel back, which is where the radio would contact the panel in a flush mount setup. A flush mount step approximately a quarter inch wide runs around the face back.
Controls and Operation
This radio, officially known as the Icom IC-M424, has one knob located on the bottom right of the front panel as well as 13 pushbuttons. The single knob turns the radio on/off and controls volume and squelch settings. Channel selection is made with up/down arrow keys located both on the radio front panel and the microphone.
Two dedicated pushbuttons offer single press control for quick selection of channel 16 or a predetermined call channel and sending of a DSC distress call. You will also find four soft keys, and a menu, clear, and enter key.
Oft used controls are selected with one of the four soft keys. Arrow keys let you scroll the functions as needed. Any of up to 14 functions can be accessed via a soft key. These include setting transmit power level, switching to weather channels, several scan functions, setting the receiver to local or distant, as well as others. Full access to DSC calling options, DSC settings, other radio settings, and certain configuration items are found in the main menu.
Connectivity
The M424 will interface with a variety of gear using a NMEA0183 interface including a GPS and the Icom MA-500TR Class B AIS unit. When connected to this AIS the M424 is able to call an AIS target without the need to manually enter the MMSI number. When connected to a GPS the radio will display present position, date, and time.
Icom M424—Added Features
This radio will connect to and power an external speaker and connect to a PA speaker. With the appropriate PA speaker connected you will hav





