ICOM HM165 Floating Speaker Microphone Instruction Manual

1. Introduction

The ICOM HM165 is a durable floating speaker microphone designed to enhance communication with compatible ICOM marine radios, such as the ICMM3401. This accessory provides clear audio transmission and reception, even in challenging marine environments. Its floating design ensures that if accidentally dropped overboard, the microphone will remain on the water's surface for easy retrieval. This manual provides essential information for the proper setup, operation, and maintenance of your HM165 speaker microphone.

2. Safety Information

• Water Exposure: While the HM165 is designed to float, it is not intended for prolonged submersion. Avoid intentionally submerging the microphone.
• Connection: Always ensure the connector is clean and dry before attaching it to your radio. A wet or dirty connection can lead to corrosion or malfunction.
• Handling: Do not pull on the coiled cable excessively, as this can damage internal wiring.
• Cleaning: Refer to the maintenance section for proper cleaning procedures. Avoid harsh chemicals.

3. Package Contents

Verify that your package contains the following items:

• ICOM HM165 Floating Speaker Microphone

4. Setup

Follow these steps to connect your HM165 speaker microphone to your compatible ICOM radio:

1. Inspect the Connector: Ensure the 3.5mm audio cable connector on the HM165 is clean and free of debris or moisture.
2. Locate Radio Port: Identify the external speaker/microphone jack on your ICOM radio (e.g., ICMM3401).
3. Connect Microphone: Carefully insert the 3.5mm connector of the HM165 into the corresponding jack on your radio. Ensure a firm and secure connection. Do not force the connector.
4. Secure Placement: Once connected, ensure the microphone is positioned where it can be easily accessed for communication but is not obstructing controls or displays.

Figure 1: The ICOM HM165 Floating Speaker Microphone, showing its main body, coiled cord, and 3.5mm audio jack for connection to a compatible radio.

5. Operating Instructions

The HM165 speaker microphone simplifies radio operation by integrating both speaker and microphone functions into a single handheld unit.

• Receiving Audio: When connected, incoming radio transmissions will be heard through the speaker on the HM165. Adjust the radio's volume control to your desired listening level.
• Transmitting (Push-To-Talk - PTT): To transmit, press and hold the PTT button located on the side of the microphone. Speak clearly into the microphone grille. Release the PTT button to return to receive mode.
• Floating Feature: In the event the HM165 is accidentally dropped into water, its buoyant design will allow it to float. Retrieve it promptly to prevent prolonged exposure and ensure continued functionality. After retrieval, dry the microphone thoroughly as described in the maintenance section.

6. Maintenance

Proper care will extend the life and performance of your HM165 speaker microphone.

• Cleaning: After use, especially in a marine environment, wipe the microphone with a soft cloth dampened with fresh water. For stubborn dirt, a mild soap solution can be used, followed by a rinse with fresh water.
• Drying: Ensure the microphone, especially the speaker grille and connector, is completely dry before storage or reconnection. Air dry thoroughly. Do not use heat sources to dry.
• Storage: Store the HM165 in a cool, dry place away from direct sunlight and extreme temperatures. Avoid kinking or tightly coiling the cable.
• Inspection: Periodically inspect the cable and connector for any signs of wear, cuts, or corrosion. If damage is observed, discontinue use and contact ICOM support.

7. Troubleshooting

If you experience issues with your HM165 speaker microphone, try the following basic troubleshooting steps:

• No Audio from Speaker:
  • Ensure the microphone is securely connected to the radio.
  • Check the radio's volume level.
  • Verify the radio is powered on and receiving signals.
• No Transmission (PTT not working):
  • Ensure the microphone is securely connected.
  • Confirm the PTT button is being fully pressed.
  • Check the radio's power and antenna connection.
• Distorted Audio:
  • Check for loose connections.
  • Ensure the microphone grille is clean and free of obstructions.
  • Adjust the radio's volume.

If these steps do not resolve the issue, contact ICOM customer support for further assistance.

8. Specifications

9. Warranty and Support

For information regarding warranty coverage, technical support, or service for your ICOM HM165 Floating Speaker Microphone, please refer to the warranty documentation included with your original purchase or visit the official ICOM website. Contacting ICOM customer service directly will provide the most accurate and up-to-date support information.