Introduction
This document serves as the instruction manual for the Icom IC-M504 VHF Marine Transceiver. It provides essential information for the safe and effective operation of this advanced marine communication device. Users will find details on features, operating procedures, important safety warnings, and technical specifications designed to ensure optimal performance and user understanding.
Key Features
- Simple operation with large, accessible keys.
- Clear and audible speaker output.
- Built-in Digital Selective Calling (DSC) meeting ITU Class D requirements.
- Rugged, waterproof construction for marine environments.
- Compatibility with optional COMMANDMIC units for extended functionality.
- Easy DSC calling integration with Icom's MA-500TR Class B AIS Transponder.
Important Information
Safety First: Always read and understand all instructions before operating the transceiver. This manual contains critical operating information for the IC-M504 and should be retained for future reference.
Definitions: The manual clarifies terms like WARNING, CAUTION, and NOTE to ensure users understand the potential implications of certain actions or conditions.
Emergency Procedures
Detailed guidance is provided for initiating Distress calls via both standard voice communication on Channel 16 and Digital Selective Calling (DSC) on Channel 70. This includes the correct procedure for Mayday calls and DSC distress transmissions.
Radio Operator Warnings
Crucial safety information regarding Radio Frequency (RF) exposure is outlined. This section details FCC requirements for antenna placement and safe operating distances to prevent exceeding Maximum Permissible Exposure (MPE) limits. Adherence to these guidelines is essential for the safety of all personnel.
Panel and Basic Operation
The manual includes a comprehensive description of the transceiver's front panel and microphone controls, including the function of each key and dial. Basic operations such as channel selection (including Channel 16 and call channels), receiving, transmitting, and scan operations are explained step-by-step.
Advanced Functions
Information on advanced features such as DSC operation (including MMSI programming, DSC calls, and received messages), intercom functionality, hailer operation, and automatic foghorn is also covered.
Maintenance and Troubleshooting
Guidance on connections, fuse replacement, antenna setup, mounting procedures, and troubleshooting common issues is provided to assist users with the installation and upkeep of their IC-M504.
