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Icom IC-M804 SSB HF Marine Radio
The Icom IC-M804 is a Class E DSC MF/HF (SSB) marine transceiver for offshore and ocean-going sailors and for commercial vessels that do not need GMDSS. It is CE marked under the European Radio Equipment Directive (RED). This product is the radio only, in a 12 V (#11) or 24 V (#21) version.
Features
Class E DSC with Distress Button - The IC-M804 meets the ITU-R M.493-15 and ETSI EN 300 338-4 Class E DSC regulations and is based on Icom's MED-approved GM800 Class A GMDSS radio, with almost identical features and functions except for the DSC class. In an emergency, pressing the large independent Distress button, which has a spring-loaded cover, sends a digital distress signal with your GNSS position to other ships and coast stations.
DSC Watch-Keeping Receiver - A dedicated DSC watch-keeping receiver continuously scans the six DSC distress frequencies in rotation. You can store 100 MMSI numbers for DSC calls (75 individual and 25 group), each with a 10-character name.
Wide-Angle Colour Display with Night Mode - The high-resolution 10.9 cm colour TFT display has a viewing angle of almost 180° and shows characters and function icons clearly. Night mode keeps it easy to read in the dark.
Intuitive User Interface - The directional keypad and soft keys make operation simple, with the most common functions on the soft keys at the bottom of the display. The large ten-key pad lets you enter channel numbers and MMSI numbers with their names quickly.
Instant Replay - The radio automatically records the last 2 minutes of received audio, so you can play back a call you did not hear clearly and not miss an incoming call.
Built for the Marine Environment - The IC-M804 has passed Icom's environmental testing and quality assurance processes and is designed for reliable, corrosion-resistant operation in harsh marine conditions. The remote controller is waterproof to IPX7 (1 m for 30 minutes).
Integrated GNSS Receiver - The built-in GNSS receiver (GPS, GLONASS and SBAS) gives position, course, speed and UTC time through the supplied GNSS antenna with its 5 m cable.
NMEA 2000 and NMEA 0183/-HS - Over NMEA 2000 the IC-M804 exchanges GNSS data, DSC call information, radio information and PGN list data on the network. It can also convert NMEA 0183/-HS position data to NMEA 2000 data for other equipment.
HM-214H Hand Microphone - The supplied HM-214H hand microphone has a programmable button for quick access to the function you use most.
Power and Reception - Icom rates the output power at the output of the AT-141 antenna tuner: 125 W PEP (85 W PEP from 1.6 to 3.9999 MHz). The radio receives continuously from 0.5 to 29.9999 MHz, using an advanced RF direct sampling system.
Installation
The IC-M804 main unit is installed separately from the remote controller, and the two are connected with the supplied control cable. The IC-M804 needs an antenna tuner such as the Icom AT-141 automatic antenna tuner, connected to the main unit with the OPC-1465 shielded control cable (10 m); both are listed under Parts & Accessories.
An HF antenna (for example a whip or an insulated backstay) and an RF ground, such as a bronze ground plate, are needed and are not included. As the connection diagram shows, the main unit also has a connection for a separate HF antenna for DSC reception.
The 12 V version runs on 10.8-15.6 V DC and the 24 V version on 21.6-31.2 V DC (negative ground). In transmit, the current drain is up to 40 A on 12 V and 20 A on 24 V, so plan the DC wiring for this current. To flush-mount the controller in a panel, use the optional MB-75 flush mount kit.
Specifications
| Receive frequency range | 0.5-29.9999 MHz (continuous) |
| Transmit frequency range | 1.6-2.9999, 4.0-4.9999, 6.0-6.9999, 8.0-8.9999, 12.0-13.9999, 16.0-17.9999, 18.0-19.9999, 22.0-22.9999, 25.0-27.5 MHz |
| DSC frequencies | 2.1875, 4.2075, 6.3120, 8.4145, 12.5770, 16.8045 MHz |
| DSC | Class E (ITU-R M.493-15, ETSI EN 300 338-4) |
| Modes | TX/RX: J3E (USB), J2B (AFSK), F1B (FSK); RX only: J3E (LSB), A1A (CW), H3E (AM) |
| Output power (at AT-141 output) | 125 W PEP (4.0-27.5 MHz), 85 W PEP (1.6-3.9999 MHz) |
| Antenna impedance | 50 Ω (unbalanced) |
| Power supply | 10.8-15.6 V DC (12 V version), 21.6-31.2 V DC (24 V version), negative ground |
| Current drain | Receive: less than 6 A (12 V) / 3 A (24 V) at max. audio; transmit: less than 40 A (12 V) / 20 A (24 V) at max. power |
| Audio output | 4.0 W (4 Ω, 10% distortion) |
| Display | Colour TFT, 10.9 cm, wide viewing angle, night mode |
| MMSI memory | 100 (75 individual, 25 group), 10-character names |
| GNSS | Built-in GPS, GLONASS and SBAS receiver; antenna with 5 m cable |
| Interfaces | NMEA 2000, NMEA 0183/-HS |
| Waterproofing | Remote controller IPX7 (1 m for 30 minutes) |
| Operating temperature | -15 °C to +55 °C |
| Dimensions (W x H x D, without projections) | Main unit 367 x 95 x 260 mm; controller 274 x 114 x 86 mm |
| Weight | Main unit approx. 8.6 kg; controller approx. 760 g |
What's in the box
The IC-M804 comes with the accessories supplied by Icom:
- IC-M804 main unit (12 V or 24 V version)
- Remote controller and control cable
- HM-214H hand microphone
- DC power cable
- GNSS antenna with 5 m cable
- Mounting plates for the main unit
- Mounting bracket kit for the remote controller
Choose the 12 V or 24 V version to match your boat's DC system.
Not included - The antenna tuner, the HF antenna and the RF ground.
The IC-M804 is also available as the Icom IC-M804 SSB HF Offshore Pack, with the AT-141 tuner and the OPC-1465 cable, and as a Full Pack that also includes the HS-98 handset and the SP-24E external speaker.
| Code | Version | Availability | Price | |
|---|---|---|---|---|
|
ICOM IC-M804 12V #11
|
7 days
|
€3,599.00 (inc. VAT)
€2,974.38 (ex. VAT) |
|
|
ICOM IC-M804 24V #21
|
7 days
|
€3,599.00 (inc. VAT)
€2,974.38 (ex. VAT) |
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