BLU marine IC-M804

The ICOM IC-M804 is a marine MF/HF single sideband (SSB) transceiver designed for long-range communications beyond the horizon. Compliant with ITU-R M.493-15 and ETSI EN 300 338-4 DSC Class E regulations, this unit is a critical communication and safety device for offshore navigation. It differs from VHF radios by its ability to maintain reliable links over vast maritime areas, positioning the IC-M804 as a strategic piece of equipment for recreational vessels and light commercial units not subject to GMDSS Class A requirements.

Advanced Safety and Communication

The IC-M804’s Class E DSC function includes an independent distress button, protected by a spring-loaded cover, enabling rapid transmission of a digital distress signal with GNSS coordinates. A dedicated DSC watch receiver continuously scans six distress channels in rotation. The unit can store up to 100 MMSI numbers (75 individual and 25 group), each with a 10-character identification name. The two-minute instant replay memory ensures no incoming call is missed, allowing playback of received messages.

Intuitive Interface and Display

The ICOM IC-M804 controller features a 4.3-inch TFT color display with a near 180-degree viewing angle and clear readability, even in night mode. The user interface combines a directional pad and programmable keys for quick access to common functions. A numeric keypad allows smooth entry of channel or MMSI numbers. The main unit measures 367 (W) × 95 (H) × 260 (D) mm and weighs 8.6 kg, while the controller, measuring 274 (W) × 114 (H) × 86 (D) mm and weighing 760 g, is IPX7-rated, resisting immersion to 1 meter for 30 minutes.

Technical Performance and Connectivity

The ICOM IC-M804 offers extended frequency coverage: continuous reception from 500 kHz to 29.9999 MHz and transmission on key segments from 1.6 to 27.5000 MHz. Output power reaches 85 W PEP on 1.6–3.9999 MHz and 125 W PEP on 4.0–27.5000 MHz via the AT-141 automatic antenna tuner. The unit includes a GNSS receiver compatible with GPS, GLONASS, and SBAS, with a supplied GNSS antenna (5 m cable). Connectivity is provided via NMEA 2000™ and NMEA 0183/-HS, enabling data exchange for position, DSC calls, and radio information with other networked equipment. The advanced direct RF sampling system delivers high receive sensitivity (e.g., 8 dBμV emf for J3E/A1A between 1.6 and 29.9999 MHz). Power input is flexible, accepting 10.8–15.6 V (12 V DC) or 21.6–31.2 V (24 V DC), with maximum consumption of 40 A during transmission (12 V) or 20 A (24 V).