Icom IC-M504 Instruction Manual

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Icom IC-M504 Transceiver Specification

The Icom IC-M504 is a robust marine VHF transceiver designed to deliver reliable communication in demanding maritime environments. It operates within the VHF marine band, offering coverage from 156.025 MHz to 163.275 MHz with a 25-watt RF output for superior transmission range and clarity. The IC-M504 features a large, easy-to-read LCD display, providing clear visibility of channel information and operational settings, even in bright sunlight or low-light conditions.

This transceiver is equipped with Digital Selective Calling (DSC) capabilities, conforming to ITU Class D standards, which enhance safety by enabling automated distress alerts and direct communication with other DSC-equipped vessels. The IC-M504 also supports dual and tri-watch functions, allowing users to monitor multiple channels simultaneously for improved situational awareness.

With an IPX8 submersible rating, the IC-M504 is engineered to withstand harsh marine environments and can remain submerged in water up to 1.5 meters deep for 30 minutes without sustaining damage. The transceiver incorporates advanced noise-canceling technology, ensuring clear audio output by minimizing background noise in windy or noisy conditions. The inclusion of a built-in voice scrambler offers secure communication, making it a suitable choice for both recreational and professional maritime applications.

The IC-M504 supports an optional CommandMic III, a remote control microphone that extends the radio’s functionality and control to a secondary location on the vessel. It is also NMEA 0183 compatible, facilitating integration with other marine electronics for seamless data exchange. This transceiver is housed in a compact, rugged chassis, measuring 164 x 78 x 139 mm, and is designed for straightforward installation on a variety of vessels. Its user-friendly interface, combined with its reliable performance and advanced features, makes the Icom IC-M504 a trusted choice for marine communication.

Icom IC-M504 Transceiver F.A.Q.

How do I perform a factory reset on my Icom IC-M504?

To perform a factory reset on the Icom IC-M504, turn off the transceiver. While holding down the "Function" and "Scan" buttons, turn the power back on. This will reset the device to its default settings.

What should I do if my IC-M504 is not transmitting audio?

Check if the microphone is properly connected and not muted. Verify that the transceiver is set to an appropriate frequency and that the power output is correctly configured. If the issue persists, consider checking the antenna connections.

How can I update the firmware on my Icom IC-M504?

The IC-M504 transceiver does not typically require firmware updates due to its stable design. However, consult the Icom website or your dealer for any specific updates or instructions.

What is the best way to clean and maintain my IC-M504?

Use a soft, dry cloth to clean the exterior. Avoid using harsh chemicals or solvents. Regularly check the antenna connections and ensure that the microphone and speaker are free from dust and debris.

Why does my IC-M504 not power on?

Ensure that the power cable is securely connected and that the fuse is not blown. Check the battery voltage and connections. If the problem continues, consult a professional technician for further diagnosis.

How can I improve the reception on my IC-M504?

Ensure that the antenna is properly installed and in good condition. Consider using an external speaker for better audio clarity. Adjust the squelch setting to minimize background noise.

What are the steps to program channels on the IC-M504?

To program channels, access the menu and select the channel programming option. Use the rotary knob to select the desired channel number, then enter the frequency using the keypad. Save the settings before exiting.

What can I do if the display on my IC-M504 is not working properly?

Check the contrast settings in the menu. Ensure that the power supply is stable. If the issue persists, it may require servicing by a qualified technician.

How do I activate the weather alert function on the IC-M504?

Press the "WX" button to access the weather channels. To enable alerts, navigate to the weather alert settings in the menu and turn the alert function on.

Can I connect my IC-M504 to an external GPS device?

Yes, the IC-M504 can be connected to an external GPS device using the NMEA 0183 interface. Ensure that the GPS output settings are compatible with the transceiver's input requirements.