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Icom ic-m424g User Manual

Icom ic-m424g
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INSTRUCTION MANUAL
VHF MARINE TRANSCEIVER
This device complies with Part 15 of the FCC
Rules. Operation is subject to the condition that
this device does not cause harmful interference.
iM423
iM423G
iM424
iM424G
IC-M423G

Table of Contents

Questions and Answers:

Icom ic-m424g Specifications

General IconGeneral
TypeMarine VHF Transceiver
Frequency Range (Transmit)156.000 - 157.425 MHz
Frequency Range (Receive)156.000 - 163.425 MHz
Waterproof RatingIPX7
DisplayLCD
NMEA ConnectivityNMEA 0183
Output Power25W / 1W
ChannelsUSA, INT, CAN channels
GPSYes
ModulationFM
Power Supply13.8 V DC
Current Consumption1.5 A (max)
Operating Temperature-15°C to +55°C

Summary

Foreword and Important Information

Key Features Overview

Lists key features of the VHF marine transceiver.

Essential Usage Guidelines

Emphasizes reading instructions and saving the manual.

Safety Definition Glossary

Defines WARNING, CAUTION, and NOTE for safety.

Emergency Procedures and Country Codes

Distress Call Procedures

Details distress call procedures on Channel 16 and DSC.

Country Code Reference

Lists country codes according to ISO 3166-1 standard.

Radio Operator RF Exposure Warning

RF Exposure Limits and Antenna Placement

Explains RF exposure limits and antenna mounting guidelines.

FCC Compliance and Warnings

FCC Part 15 Compliance for Radiators

Details FCC compliance for Class A unintentional radiators.

Warning Sticker Application

Instructions for applying the warning sticker for FCC compliance.

Safety Precautions

Power and Cable Safety

Safety warnings regarding power connections and cable modification.

Environmental and Handling Precautions

Precautions for placement, temperature, cleaning, and waterproof limits.

Operating Rules and Licenses

Operational Priorities and Privacy

Rules for call priorities, privacy, and language use.

Ship Station and Operator Licensing

Requirements for ship station and operator licenses.

Front Panel Description

Keypad and Display Identification

Identifies and explains the keys and displays on the front panel.

Front Panel Controls

Channel 16 and Call Channel Key Functions

Function of the Channel 16 and Call Channel key.

Softkey Functionality

Description of assignable softkey functions.

Front Panel Functions

Favorite Channels and Naming

How to set favorite channels and enter names.

Backlight and Log Access

Controls for backlight adjustment and accessing call logs.

Function Display Icons

Understanding Display Indicators

Explains various icons displayed on the transceiver's screen.

Display Indicators

Channel and Battery Indicators

Details of low battery, channel number, and channel name fields.

Time and GPS Status Indicators

Explains time zone and GPS status indicators.

Panel Indicators and Softkeys

Position and Scan Status Indicators

Indicators for position data and scan status.

Softkey Operation

How to select and use softkey functions.

Speaker Microphone Operation

Microphone Controls and Functions

Details the PTT, channel keys, and transmit power on the microphone.

Initial Setup and Preparation

Entering the MMSI Code

Step-by-step guide to entering the MMSI code for DSC.

Initial Setup (Continued)

Entering the ATIS Code

Guide for entering the ATIS code (for specific versions).

Basic Operation: Channel Selection

Selecting Channel 16 and Call Channel

How to select Channel 16 and the Call channel.

Basic Operation: Channel Management

Selecting Operating Channel Groups

How to choose the operating channel group (INT, USA, etc.).

Basic Operation: Weather Channels

Weather Channel Selection and Alerts

How to select weather channels and enable weather alerts.

Basic Operation: Communication

Receiving and Transmitting Signals

Guide to receiving signals and transmitting messages.

Basic Operation: Audio Settings

Adjusting Volume and Squelch Levels

How to set audio volume and squelch levels.

Basic Operation: Channel Data

Entering Call Channel Data

How to input data for the Call channel.

Assigning Channel Names

How to assign names to channels.

Basic Operation: Microphone Features

Microphone Lock Functionality

How to enable/disable the microphone lock.

Basic Operation: Display and Speaker

Adjusting Backlight Brightness

How to set the brightness of the display and keys.

AquaQuake Water Draining Function

How to use the function to clear water from the speaker.

Scan Operation Modes

Understanding Scan Types

Explanation of Priority and Normal scanning modes.

Scan Operation Procedures

Setting Favorite Channels for Scanning

How to add and remove favorite channels for scanning.

Initiating a Scan

Steps to initiate a scan operation.

Dualwatch and Tri-watch Modes

Dualwatch/Tri-watch Description and Operation

How Dualwatch and Tri-watch functions work and are operated.

DSC Operation: Address Management

Entering Individual DSC IDs

How to enter and manage DSC individual addresses.

DSC Operation: Group Management

Entering Group DSC IDs

How to enter and manage DSC group addresses.

DSC Operation: ID Maintenance

Deleting Individual and Group IDs

How to delete individual and group DSC IDs.

DSC Operation: Distress Call Data

Entering Ship Position and Time

Manually entering ship's position and UTC time.

DSC Operation: Distress Calls

Transmitting a Distress Call

Step-by-step guide for transmitting a distress call.

DSC Operation: Distress Call Details

Selecting Nature of Distress

Selecting the nature of distress for a distress call.

DSC Operation: Distress Call Data Entry

Editing Position and Time for Distress Calls

Editing position and time for distress calls when GPS is unavailable.

DSC Operation: Distress Call Management

Canceling a Distress Call

Procedure for canceling a transmitted distress call.

DSC Operation: Individual Calls

Making an Individual DSC Call

How to make an individual DSC call to a specific station.

DSC Operation: Intership Communication

Using Intership Channels for Individual Calls

Selecting intership channels for individual DSC calls.

DSC Operation: Call Acknowledgements

Acknowledging Individual DSC Calls

How to acknowledge an individual DSC call.

DSC Operation: Individual Call Responses

Individual Call Acknowledgement Options

Options for acknowledging an individual DSC call (Able to Comply, etc.).

DSC Operation: Group Calls

Making a Group DSC Call

How to make a DSC call to a specific group.

DSC Operation: Group Call Transmission

Confirming and Transmitting Group Calls

Confirming and transmitting a group DSC call.

DSC Operation: All Ships Calls

Making an All Ships DSC Call

How to make an All Ships DSC call.

DSC Operation: Position Requests

Requesting a Ship's Position

How to request a ship's position via DSC.

DSC Operation: Position Request Transmission

Transmitting Position Requests and Handling Replies

Transmitting a position request call and handling acknowledgments.

DSC Operation: Position Reports

Sending Your Ship's Position

How to send your ship's position via DSC.

DSC Operation: Position Report Transmission

Transmitting Position Reports and Handling Replies

Transmitting a position report call and handling acknowledgments.

DSC Operation: Polling Requests

Requesting Vessel Status

How to request a specific vessel's status via DSC.

DSC Operation: Polling Request Transmission

Transmitting Polling Requests and Handling Replies

Transmitting a polling request call and handling acknowledgments.

DSC Operation: Test Calls

Making a Test DSC Call

How to make a test DSC call.

DSC Operation: Test Call Transmission

Transmitting Test Calls and Handling Replies

Transmitting a test DSC call and handling acknowledgments.

DSC Operation: Test Acknowledgements

Acknowledging Test DSC Calls

How to acknowledge a received test DSC call.

DSC Operation: Manual Test Acknowledgements

Manually Acknowledging Test Calls

Manually acknowledging a received test DSC call.

DSC Operation: Position Replies

Replying to Position Requests

How to reply to a DSC position request.

DSC Operation: Manual Position Replies

Manually Replying to Position Requests

Manually replying to a DSC position request.

DSC Operation: Position Report Replies

Replying to Position Reports

How to reply to a DSC position report.

DSC Operation: Manual Position Report Replies

Manually Replying to Position Reports

Manually replying to a DSC position report.

DSC Operation: Polling Request Replies

Replying to Polling Requests

How to reply to a DSC polling request.

DSC Operation: Manual Polling Request Replies

Manually Replying to Polling Requests

Manually replying to a DSC polling request.

DSC Operation: Receiving Calls

Handling Incoming Distress Calls

How to handle an incoming DSC distress call.

DSC Operation: Receiving Relay Calls

Handling Incoming Distress Relay Calls

How to handle an incoming DSC distress relay call.

DSC Operation: Receiving Individual Calls

Handling Incoming Individual Calls

How to handle an incoming DSC individual call.

DSC Operation: Receiving Group/Area/All Ships Calls

Handling Incoming Group, Area, or All Ships Calls

How to handle incoming Group, Area, or All Ships DSC calls.

DSC Operation: Receiving Position Requests

Handling Incoming Position Requests

How to handle an incoming DSC position request.

DSC Operation: Receiving Position Reports

Handling Incoming Position Reports

How to handle an incoming DSC position report.

DSC Operation: Receiving Polling and Test Calls

Handling Incoming Polling Request or Test Calls

How to handle incoming Polling Request or Test calls.

DSC Operation: Test Acknowledgements and Logs

Handling Incoming Test Acknowledgements

How to handle an incoming DSC test acknowledgement.

Transmitted Call Log

How to view and manage the transmitted call log.

DSC Operation: Received Call Logs

Viewing Distress Messages in Call Log

How to view distress messages in the received call log.

DSC Operation: Received Call Logs (Continued)

Viewing Other Messages in Call Log

How to view other messages in the received call log.

Menu Screen Operation Overview

Menu Screen Item Categories

Overview of items available in the menu screen.

Menu Screen: Radio Settings

Scan, Watch, and Channel Group Settings

Settings for scanning, watch modes, and channel selection.

Menu Screen: Radio Settings (Continued)

Weather Alert Configuration

How to configure weather alert notifications.

Menu Screen: Configuration Settings

Display, Beep, and Backlight Settings

Settings for display, audio feedback, and backlight.

Key Assignment Configuration

How to assign functions to dial and softkeys.

Menu Screen: Key Assignment Details

Dial and Softkey Assignment Options

Detailed assignment options for dial and softkeys.

Menu Screen: System Configuration

UTC Offset and Noise Cancel Settings

Settings for time zone offset and noise cancellation.

Menu Screen: System Configuration (Continued)

Inactivity Timer Settings

Setting the inactivity timer for screen return.

Menu Screen: NMEA Output Settings

NMEA Data Output Configuration

Configuring NMEA output for position and DSC data.

Menu Screen: Advanced Settings

Remote ID and COMMANDMIC Speaker Settings

Settings for Remote ID and COMMANDMIC speaker selection.

Connections and Maintenance Overview

External Device Connections

Details on connecting antenna, NMEA devices, and external speakers.

Connections and Maintenance: Power and Peripherals

Power, Ground, and Microphone Connections

Connecting DC power, ground, and command microphone.

MA-500TR AIS Transponder Connection

How to connect the transceiver to the MA-500TR AIS transponder.

Connections and Maintenance: Components and Care

Antenna Considerations and Fuse Replacement

Antenna importance and procedure for replacing the fuse.

Cleaning and Supplied Accessories

How to clean the transceiver and a list of supplied accessories.

Connections and Maintenance: Mounting

Mounting the Transceiver with Bracket

Instructions for mounting the transceiver using the bracket.

Connections and Maintenance: Flush Mounting

MB-132 Flush Mount Installation Guide

Steps for installing the optional MB-132 flush mount.

Connections and Maintenance: Microphone Installation

Installing the Command Microphone

How to install the command microphone and its cable.

Specifications and Options Overview

General, Transmitter, and Receiver Specifications

Technical details covering frequency, modes, power, and sensitivity.

Specifications and Options Details

Transceiver Dimensions

Physical dimensions of the transceiver.

Optional Accessories

List and brief description of optional accessories.

Channel List

VHF Marine Channel Frequencies

List of VHF marine channels, frequencies, and usage notes.

Troubleshooting Guide

Common Problems and Solutions

Table listing common issues and their corresponding solutions.

Mounting Template

Flush Mount Hole Diagram

Diagram for cutting a mounting hole for flush installation.

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