ICOM IC-M804 Marine MF/HF Radio Pack
In stock
Technical specifications
Technical specifications
| Activation delay | Not applicable |
| Activation requirement | Obtaining an MMSI number and a radio operating license |
| Antenna type | External |
| Balance check method | Not applicable |
| Bi-directional communication | Yes |
| Compatible network | MF/HF marine network |
| Compatible systems | NMEA 0183/2000 navigation systems (via optional interface), GNSS |
| Coverage area | Not applicable |
| Data service included | Not applicable |
| Data transfer speed | 250 |
| Dedicated phone number | Not applicable |
| Delivery format | Physical product |
| Geographic applicability | Global (maritime) |
| GPS | Yes (integrated GNSS) |
| Intended use | Long-range maritime communication, DSC distress calls |
| IP rating | IPX7 |
| Iridium frequency band | Not applicable |
| Rechargeable | No |
| Payment model | Single purchase of equipment |
| Satellite constellation type | Not applicable (for main communication) |
| Satellite network | Not applicable (for main communication) |
| Shock and vibration resistance | Shock and vibration resistance compliant with MIL-STD-810 |
| SMS capability | No (DSC messages only) |
| SOS button | Dedicated distress button |
| Integrated SOS button | Yes |
| Standalone operation | Yes |
| Supported services | Voice, DSC, data (via external modem) |
| Voice capability | Yes |
| Voicemail support | Not applicable |
| Weight | Not specified |
| Wired input | Power, antenna, NMEA, external speaker, accessory ports |
| Wireless connectivity | GNSS |
Detailed description
Detailed description
The Icom IC-M804 Marine MF/HF Radio Pack is a transceiver designed for long-range communications beyond the horizon. Compliant with ITU-R M.493-15 and ETSI EN 300 338-4 Class E DSC regulations, it integrates advanced safety and navigation features for demanding marine environments.
DSC Safety and Communication
The IC-M804 features Class E Digital Selective Calling (DSC). An independent distress button, protected by a spring-loaded cover, enables rapid transmission of a digital distress signal including GNSS coordinates, alerting ships and coastal stations. A dedicated DSC watch receiver continuously monitors six distress channels in rotation and can store up to 100 MMSI numbers (75 individual, 25 group) with a 10-character identifier.
User Interface and Display
The intuitive user interface combines a directional keypad and programmable keys for quick access to common functions. A large numeric keypad facilitates channel and MMSI number entry. The 4.3-inch TFT color display offers a nearly 180-degree viewing angle and clear readability of characters and icons, even in night mode. The instant replay function allows recording and replaying the last two minutes of received audio, preventing missed calls. The controller has IPX7 protection, resisting immersion to 1 meter for 30 minutes.
Connectivity and Performance
The IC-M804 integrates a GNSS receiver compatible with GPS, GLONASS, and SBAS, providing position, heading, speed, and UTC data via the supplied GNSS antenna with 5 m cable. NMEA 2000™ and NMEA 0183/-HS connectivity enables data exchange for GNSS, DSC call information, and radio data with other networked equipment. The transceiver delivers 125 W (PEP) RF output via the AT-141 automatic antenna tuner (optional accessory), with continuous receive coverage from 500 kHz to 29.9999 MHz and transmission frequencies specific to marine bands. The unit operates on a DC power source of 10.8–15.6 V (12 V DC) or 21.6–31.2 V (24 V DC), with a maximum consumption of 40 A (12 V) during transmission and 6 A (12 V) during reception. The main unit measures 367 (L) × 95 (H) × 260 (P) mm and weighs 8.6 kg, while the controller measures 274 (L) × 114 (H) × 86 (P) mm and weighs 760 g.
Expert opinion
Expert opinion
Pol CONIN
Digital Manager
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