Icom
Icom IC-M604 VHF Marine Radio Transceiver
Best marine radio for boaters prioritizing reliable communication and safety.
The Icom IC-M604 VHF Marine Radio Transceiver offers robust communication with classic styling. This high-performance unit features a built-in 30-watt hailer for clear announcements and an AquaQuake drainage system to keep the speaker clear. Its dot-matrix display conveniently shows GPS information. Designed for reliability, it includes full Class D DSC capabilities and is controllable by optional COMMANDMIC units, ensuring you stay connected and safe on the water.
$189.97
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Owner Satisfaction
4.7
/ 5
Category Rank
2
/ 178
#2 in Marine Radios
Price vs Category Average
-62%
Below average
Waterproof Rating
7
/ IPX
Who it's for
- Boaters needing reliable communication in challenging signal environments
- Captains prioritizing advanced safety and onboard signaling tools
- Mariners operating in harsh, high-exposure marine conditions
Who should skip it
- Budget-conscious recreational boaters seeking entry-level pricing
- Owners of small vessels with limited console space
- Users preferring modern, intuitive, full-color touch interfaces
Performance breakdown
Communication Clarity
High-output 30-watt hailer ensures your voice carries across busy harbors.
Waterproof Durability
IPX7 rating provides reliable protection against harsh marine environments and submersion.
Safety Integration
Class D DSC and GPS connectivity offer essential peace of mind.
Interface Usability
Dot-matrix display makes reading critical navigation data simple and fast.
System Versatility
Optional COMMANDMIC support allows for convenient remote control from multiple stations.
Audio Maintenance
AquaQuake drainage system effectively clears water from the speaker for crisp sound.
Key Specs
Waterproof Rating
IPX7
Dimensions
8 11/16"W x 4 5/16"H x 4 5/16"D
Hailing Power
30W hailer and 4 pattern foghorn
DSC Compliance
Class D (2011 ITU requirements)
Connectivity
NMEA GPS in/out
Display Type
Dot matrix
Interface Inputs/Outputs
NMEA GPS in/out
Receiver Rejection
80dB
Features
- Built-in 30W true hailer for clear communication
- AquaQuake drainage system removes trapped water
- Easy-to-read GPS information on dot-matrix display
- Full-feature Class D DSC compliance
- Controllable by optional COMMANDMIC units
- IPX7 waterproof rating
- NMEA GPS connectivity
- Speaker mic with favorite channel selection
What customers say
The Icom IC M604 is consistently praised for its superior build quality and unwavering reliability. Users report flawless performance even after extended use in harsh saltwater environments. A key highlight is the exceptional clarity of both audio transmission and reception, ensuring dependable communication when safety is paramount. Although the initial cost is notable, owners agree that the radio's exceptional longevity and trustworthy operation fully justify the investment. It is viewed as essential, dependable safety equipment.
Know before you buy
Yes, the IC-M604 is compatible with optional COMMANDMIC units, allowing you to operate the radio remotely from a cockpit or flybridge.
An IPX7 rating means the unit can withstand accidental immersion in water up to one meter deep for 30 minutes. It is designed to handle heavy spray and rain, making it suitable for open-cockpit installations.
The radio features a 30-watt hailer that allows you to broadcast audio through an external horn speaker. It also includes a four-pattern foghorn feature for added safety in low-visibility conditions.
Yes, when connected to an external GPS source via NMEA, the dot-matrix display will show your current position, course, and speed directly on the screen.
The AquaQuake feature uses low-frequency sound vibrations to clear water out of the speaker grill. This ensures that your audio remains clear even after the unit has been exposed to heavy water spray.
Yes, the IC-M604 is fully compliant with Class D DSC requirements, which is the standard for modern recreational marine safety and distress signaling.
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