1. Введение
This manual provides essential information for the proper installation, operation, and maintenance of your ICOM M424G 21 Fixed Mount VHF Radio with Internal GPS. Please read this manual thoroughly before using the radio to ensure safe and efficient operation.

Передний view of the ICOM M424G 21 VHF radio, showing the main unit with its display, control buttons, and rotary knobs, alongside the connected hand microphone.
2. Настройка
2.1 Распаковка
Убедитесь, что все компоненты присутствуют:
- ICOM M424G 21 VHF Radio Unit
- Ручной микрофон
- Mounting Bracket (may be sold separately)
- Силовой кабель
- Руководство пользователя (этот документ)
2.2 Монтаж
The ICOM M424G 21 can be flush-mounted or installed using a bracket. Ensure the mounting location provides adequate ventilation and is protected from direct exposure to extreme weather conditions, although the unit offers IPX7 submersible protection.
- Монтаж заподлицо: Requires careful cutting of the dashboard or panel. Refer to the provided template for precise dimensions.
- Монтаж кронштейна: Secure the supplied or compatible mounting bracket to a stable surface. Attach the radio unit to the bracket using the provided hardware. Note that some brackets may be sold separately.
2.3 Электрические соединения
Connect the radio to a 12-volt DC power source. Ensure proper polarity (red to positive, black to negative) and use appropriate fusing. Connect the VHF antenna to the antenna connector on the rear of the unit. The internal GPS receiver does not require an external GPS antenna.
3. Инструкция по эксплуатации
3.1 Включение/выключение и основные элементы управления
- Власть: Нажмите и удерживайте VOL/SQL PWR ручка для включения или выключения устройства.
- Объем: Поверните VOL/SQL PWR knob to adjust the speaker volume.
- Подавление: Нажмите VOL/SQL PWR knob momentarily, then rotate to adjust the squelch level to eliminate background noise.
- Выбор канала: Используйте CH Вверх/Вниз buttons or the channel selector knob to change channels.
- Channel 16/Call Channel: Нажмите специальную кнопку 16/С button for instant access to Channel 16 (distress and calling) or the user-programmed call channel.
3.2 дополнительных функций
- Dual/Tri-Watch Function: Monitor Channel 16 and/or the call channel while operating on another channel. This feature is crucial for safety and communication.
- DSC (Digital Selective Calling): The M424G 21 supports DSC for distress calls, individual calls, group calls, and all ships calls. The internal GPS provides your position for distress signals.
- Weather Channels with Alert Function: Access NOAA weather channels and receive alerts for severe weather conditions.
- Aqua Quake Draining Function: This feature emits a vibrating sound to clear water from the speaker grille, maintaining clear audio even after exposure to water.
- MA-500TR AIS Transponder Compatibility: The radio is compatible with the MA-500TR AIS Transponder for enhanced vessel tracking and collision avoidance.
- Микрофон с функцией шумоподавления: The included microphone is designed to reduce background noise, ensuring clear voice transmission in noisy environments.
4. Техническое обслуживание
4.1 Очистка
Regularly clean the radio unit and microphone with a soft, damp cloth. Do not use abrasive cleaners or solvents. Ensure the speaker grille is clear of debris, especially after exposure to water, and utilize the Aqua Quake function.
4.2 Защита от воды
The ICOM M424G 21 offers IPX7 submersible protection, meaning it can withstand immersion in 1 meter of water for 30 minutes. While robust, avoid unnecessary exposure to water and ensure all caps and covers are securely fastened.
5. Поиск Неисправностей
If you experience issues with your ICOM M424G 21, consider the following basic checks:
- Нет питания: Проверьте соединения силового кабеля, предохранитель и напряжение батареи.tage.
- Нет звука/Плохое качество звука: Adjust volume and squelch. Ensure the microphone is properly connected. Use the Aqua Quake function if water exposure is suspected.
- No Transmission/Poor Range: Check antenna connection and condition. Ensure power output is set correctly (1W or 25W).
- GPS не удаётся определить местоположение: Убедитесь, что устройство имеет четкое view of the sky. Allow sufficient time for initial acquisition.
For persistent issues, consult a qualified marine electronics technician or contact ICOM customer support.
6. Технические характеристики
| Особенность | Ценить |
|---|---|
| Размеры продукта | 9 x 8 x 3 дюйма |
| Вес товара | 1.2 фунта |
| ASIN | B00SXH8DP6 |
| Номер модели товара | M424G 21 |
| Особые возможности | Погружной |
| Другие функции дисплея | Беспроводной |
| Цвет | Аква |
| Что в коробке? | Radio, User Manual |
| Производитель | ICOM |
| Дата первой доступности | 28 января 2015 г. |
| Бренд | ICOM |
| Количество каналов | 21 |
| Диапазон частот | 156.000 МГц - 174 МГц |
| Максимальный диапазон разговора | 5 миль |
| Томtage | 12 Вольт |
| Уровень водонепроницаемости | Водонепроницаемый (IPX7) |
7. Гарантия и поддержка
For warranty information, please refer to the documentation included with your product or visit the official ICOM website. For technical support, service, or replacement parts, please contact ICOM customer service directly.