

VHF/DSC Marine Transceiver (With GPS Receiver)
The IC-M423G is an enhanced version of the IC-M423 fixed mount VHF/DSC and includes an integrated GPS Receiver which allows current position and time to be used for DSC calls. This new radio also has a striking new white backlight LCD which improves visibility, along with a smart looking new HM-205B Speaker-microphone which has a large 45mm diameter speaker. In addition, the optional HM-195G COMMANDMIC also incorporates a white backlight LCD and laser-cut keypad.
NEW FEATURES
Built-in GPS Receiver
The built-in GPS receiver shows your current position and time and can be used for DSC calls. GPS data source is selectable from internal and external GPS (and GPS-OFF).
White Backlight LCD and Laser-cut Keypad
The new white backlight LCD matches modern leisure boat design.
New HM-205B/SW Speaker-microphone
High grade speaker-microphone, HM-205B/SW is supplied with the IC-M423G. The HM-205B/SW has channel Up/Down, channel 16/call channel and transmit power (Hi/Low) buttons and large 45mm diameter speaker.
RETAINED FEATURES (from IC-M423)
Active Noise Cancelling
Using digital signal processing technology, the built-in active noise canceller reduces background noise to up to 90% in the received signal and 30% in the transmitting signal.
Intuitive User Interface
The menu system provides easy and intuitive operation. The bottom line of the dot-matrix display shows the software key functions which can be toggled with the left and right buttons. The directional keypad allows you to perform various operations and settings.
10W Loud Audio, Public Address and Foghorn
The IC-M423G has a built-in 10W amplifier that increases the audio output from an external PA speaker. The public address function allows you to make an announcement from the microphone like a loud speaker, and the foghorn can also be emitted from the external PA speaker.
Built-in Class D DSC
The built-in DSC watch function monitors Ch. 70 (DSC channel) activity, even while you are receiving another channel. DSC functions include: distress, individual, group, all ships, urgency, safety, position request/report, polling request and DSC test calls.
AIS Target Call
When connected to an optional MA-500TR Class B AIS transponder, the AIS target call function allows you to make an individual DSC call without having to manually input an MMSI number.
MarineCommander Compatible
When connected to the MarineCommander, the received DSC message pops up on the multifunction display.
IPX7 Submersible Protection (1.0m depth for 30 minutes)
The IC-M423G withstands submersion in up to 1.0m depth of water for 30 minutes. It is equivalent to the IPX7 standard.
Other features
• NMEA 0183 connectivity
• AquaQuake™ draining function
• Favourite channel function
• Dual/tri-watch function for monitoring Ch.16 and/or call channel
• Priority and normal scan
• Built-in attenuator for local communication
• Black and super white versions available
• This product comes complete with a simple plastic flush mount kit. Stainless steel flush mount kits are available as an option.
Specifications:
Built-in GPS Receiver Simplifies Installation
White Backlight LCD
New HM-205B/SW Speaker-microphone
New Optional HM-195GB/GW COMMANDMIC, with White Backlight LCD
Active Noise Cancelling
Intuitive User Interface
10W Loud Audio, Public Address and Foghorn Capability
Built-in Class D DSC capability
IPX7 Submersible Protection (1.0m depth for 30 minutes)
General |
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Frequency range | Tx 156.025161.600 MHz |
Rx 156.050163.275 MHz | |
CH70 156.525 MHz | |
Usable channels INT | |
Type of emission 16K0G3E (FM), 16K0G2B (DSC) | |
Power supply requirement 13.8V DC nominal (11.7-15.9 V DC) |
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Current drain | Tx 25 W output 5A |
(at 13.8 V DC) | Rx AF max. 1A |
Operating temperature range -20°C to +60°C; -4°F to +140°F | |
Antenna impedance 50 ? (SO-239) | |
Dimensions (W×H×D) 156.5 × 66.5 × 110.1 mm; 6.2 × 2.6 × 4.3 in |
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(projections not included) | |
Weight (approx.) 730 g | |
NMEA formats | In RMC, GGA, GNS, GLL, VTG |
Out DSC, DSE, RMC, GSA, GSV | |
TRANSMITTER |
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Output power (at 13.8 V DC) 25 W, 1 W | |
Max. frequency deviation ±5 kHz | |
Frequency tolerance ±5 ppm | |
Spurious emissions Less than -70 dBc (High) Less than -56 dBc (Low) |
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RECEIVER |
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Sensitivity | Main -13 dB? typ. (12 dB SINAD) |
DSC -5 dB? emf typ. (1% BER) | |
Squelch sensitivity Less than -10 dB? | |
Adjacent channel selectivity | Main More than 70 dB |
DSC More than 73 dB? emf (1% BER) | |
Spurious response | Main More than 70 dB |
DSC More than 73 dB? emf (1% BER) | |
Intermodulation | Main More than 70 dB |
DSC More than 68 dB? emf (1% BER) | |
Hum and noise More than 40 dB | |
Audio output power 4.5 W typical |
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(at 10% distortion, 4 ? load) | |
Measurements made in accordance with TIA/EIA 603. All stated specifications are subject to change without notice or obligation. | |
Applicable IP Rating |
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Ingress Protection Standard | |
Water | IPX7 (Waterproof protection) |