Distress Button for Emergencies
Distress button with a spring-loaded cover. The ICom IC-M804 meets ITU-R M.493-15 and ETSI EN 300 338-4 Class E DSC regulations. In an emergency, by pressing the large independent Distress button, a digital Distress signal is sent with GNSS coordinates and calls for help to other ships or coast stations.
Built-in DSC Watch-Keeping Receiver
The dedicated DSC watch-keeping receiver continuously scans the six distress channels in rotation. A total of 100 MMSI numbers (75 Individual and 25 Group) for DSC calls can be stored with a 10-character ID name.
Intuitive User Interface
The combination of the directional keypad and soft keys provides simple operation. The most common functions are assigned to soft keys (at the bottom of the display) for quick push function access. The large ten-key pad enables you to smoothly enter channel numbers, MMSI numbers with ID names and so on.
4.3 inch Wide Viewing Angle Colour TFT Display
A high-resolution colour LCD provides an almost 180 degree very wide viewing angle and displays characters and function icons clearly. The night mode display ensures good readability in the dark for further convenience.
Two Minutes Instant Replay Memory
The Instant Replay function automatically records the last 2 minutes of received audio. You can playback the received audio that you could not hear clearly, and will not miss any incoming call.
Integrated GNSS Receiver
The GNSS receiver which includes GPS, GLONASS and SBAS function, is integrated into the IC-M804. Your position data, course, speed and UTC data can be received with a simple connection to the supplied GNSS antenna with a 5 m cable.
NMEA 2000™, NMEA 0183/-HS Connectivity
Using NMEA 2000™ connectivity, the IC-M804 can exchange GNSS, DSC call information, radio information and PGN list data on the network. NMEA 0183/-HS GNSS position data can also be converted to NMEA 2000™ data for other equipment.
AT-141 Automatic Antenna Tuner
The AT-141 automatic antenna tuner matches all bands to your antenna. If due to a fault the automatic tuner cannot tune the antenna, the IC-M804 bypasses the tuner and will display an alert on the display.
General Specifications
| Frequency coverage |
Receive | 500 kHz–29.9999 MHz (continuous) |
|---|---|---|
| Transmit | 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, 25.0–27.5000 MHz |
|
| DSC | 2.1875, 4.2075, 6.3120, 8.4145, 12.5770, 16.8045 MHz | |
| Mode | TX/RX | J3E (USB), J2B (AFSK), F1B (FSK) |
| RX only | J3E (LSB), A1A (CW), H3E (AM) | |
| DSC | F1B | |
| Antenna impedance | 50 Ω (unbalanced) | |
| Usable temperature range | –15 ℃ to 55 ℃ | |
| Frequency stability |
TX/RX | ±10 Hz (below 29.9999 MHz) |
| DSC | ±10 Hz | |
| Power supply requirement | 10.8–15.6 V (12 V DC), 21.6–31.2 V (24 V DC) |
|
|
Current drain |
Receive |
Less than 6 A (12 V) / 3A (24 V)(Maximum audio output) |
| Transmit | Less than 40 A (12 V)/20 A (24 V) (Max. output power) (with 1.1 kHz and 1.7 kHz AF input) |
|
| Dimensions (Projections not included) |
Main unit | 367 (W) × 95 (H) × 260 (D) mm |
| Controller | 274 (W) × 114 (H) × 86 (D) mm | |
| Weight | Main unit | 8.6 kg (approximate) |
| Controller | 760 g (approximate) | |
Transmitter Specifications
| Output power
(at Tuner output) |
1.6–3.9999 MHz | 85 W pep |
|---|---|---|
| 4.0–27.5000 MHz | 125 W pep | |
| Spurious emissions | Less than -50 dB peak output power (at Max. Power) | |
| Carrier suppression | More than 40 dB peak output power (at Max. Power) | |
| Unwanted sideband suppression | More than 55 dB peak output power (at Max power with 1500 Hz AF input) |
|
Receiver Specifications
| Sensitivity | J3E, A1A | 0.5–1.5999 MHz | 30 dBμV emf (20 dB SINAD) | ||
|---|---|---|---|---|---|
| 1.6–29.9999 MHz |
8 dBμV emf (20 dB SINAD) |
||||
| J2B, F1B | 1.6–29.9999 MHz | 0 dBμV emf (1% error rate) | |||
| H3E | 0.5–1.5999 MHz | 44 dBμV emf (20 dB SINAD) | |||
| 1.6–3.9999 MHz | 24 dBμV emf (20 dB SINAD) | ||||
| DSC Sensitivity | 0 dBμV emf (1% error rate) | ||||
| Squelch sensitivity | J3E (at 12.230 MHz) | (Threshold) | Less than 26 dBμV emf | ||
| (Tight) |
Less than 96 dBμV emf |
||||
| H3E (at 1.000 MHz) | (Threshold) | Less than 36 dBμV emf | |||
| (Tight) | Less than 116 dBμV emf | ||||
| Audio output power | 4.0 W at 10% distortion with 4 Ω load | ||||
| Clarity variable range | ±150 Hz | ||||
All stated specifications are subject to change without notice or obligation.
Applicable IP Rating
| Ingress Protection Standard | |
|---|---|
| Remote controller | IPX7 (1 m depth water for 30 minutes) |
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