Introduction
This manual provides detailed instructions for the proper use, setup, operation, and maintenance of your Peltor ComTac III Electronic Headset, model MT17H682FB-47. This headset is designed to provide hearing protection while allowing for clear communication and environmental sound awareness in various demanding environments. Please read this manual thoroughly before using the product to ensure optimal performance and safety.
Product Overview
The Peltor ComTac III Electronic Headset features advanced electronic sound amplification for situational awareness and active hearing protection against harmful noise levels. It includes a single communication lead with a NATO standard plug for connection to compatible communication radios.

Figure 1: Front view of the Peltor ComTac III Electronic Headset, showing earcups, headband, and attached microphone.
Key Components:
- Earcups: Provide passive hearing protection and house the electronic components.
- Headband: Adjustable for a secure and comfortable fit.
- Microphone: Noise-canceling boom microphone for clear voice transmission.
- Communication Lead: Single lead with a NATO standard plug for radio connection.
- Battery Compartment: Located on one of the earcups for power.
- Control Buttons: For power and volume adjustments.
Setup
1. Battery Installation
- Locate the battery compartment cover on one of the earcups.
- Carefully open the cover.
- Insert the required batteries (typically AAA, refer to the compartment for specific type and polarity) ensuring correct polarity (+/-).
- Close the battery compartment cover securely.
2. Headset Adjustment
- Place the headset over your ears, ensuring the earcups fully cover them.
- Adjust the headband by sliding the earcups up or down until a comfortable and secure fit is achieved. The headband should rest on the top of your head.
- Ensure a tight seal around your ears for optimal hearing protection and sound quality.
3. Microphone Positioning
- Position the boom microphone approximately 1/4 to 1/2 inch (6-12 mm) from your mouth.
- Adjust the microphone arm to ensure it is directly in front of your mouth for clear voice pickup.
4. Connecting to Communication Device
- Connect the NATO standard plug from the headset's communication lead into the corresponding port on your compatible communication radio or Push-To-Talk (PTT) adapter.
- Ensure the connection is firm and secure.
Operating Instructions
1. Powering On/Off
- To power on the headset, press and hold the power button (usually marked with a power symbol or located on the earcup controls) for approximately 2 seconds until you hear an audible confirmation tone.
- To power off, press and hold the power button again for approximately 2 seconds until you hear a different confirmation tone or the unit powers down.
2. Volume Control
- Use the '+' and '-' buttons on the earcup to adjust the volume of the environmental listening function.
- Adjust the volume to a comfortable level that allows for clear situational awareness without being excessively loud.
3. Communication Function
- When connected to a compatible radio and PTT, press the PTT button to transmit your voice.
- Release the PTT button to receive incoming transmissions.
- Ensure your radio's volume is set appropriately for clear reception.
Maintenance
1. Cleaning
- Wipe the exterior of the earcups and headband with a damp cloth. Use mild soap if necessary, then wipe with a clean, damp cloth.
- Do not immerse the headset in water or use abrasive cleaners.
- Periodically inspect ear cushions for wear and tear. Replace them if they are damaged to maintain optimal hearing protection and comfort.
2. Battery Replacement
- Replace batteries when the low battery indicator activates or when sound quality degrades.
- Always replace all batteries at the same time with new, fresh batteries of the recommended type.
- Dispose of used batteries according to local regulations.
3. Storage
- Store the headset in a clean, dry place away from extreme temperatures and direct sunlight.
- Remove batteries if the headset will not be used for an extended period to prevent leakage.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No power/Headset does not turn on. | Dead or incorrectly installed batteries. | Check battery polarity. Replace with fresh batteries. |
| No sound from environmental listening. | Volume too low; headset not powered on. | Increase volume using '+' button. Ensure headset is powered on. |
| Poor communication audio (transmit or receive). | Loose connection; microphone improperly positioned; radio issues. | Ensure communication lead is securely connected. Adjust microphone position. Check radio settings and battery. |
| Whistling or feedback. | Poor earcup seal; volume too high. | Adjust headset for a better seal. Reduce environmental listening volume. |
Specifications
| Brand | Peltor |
| Model Number | MT17H682FB-47 |
| Product Dimensions (LxWxH) | 9.5 x 7.3 x 5.4 inches |
| Item Weight | 0.01 ounces |
| Color | Coyote Brown |
| Communication Type | Single Comm NATO |
| Power Source | Batteries (type not specified, typically AAA) |
Warranty and Support
For warranty information, please refer to the documentation included with your product at the time of purchase or visit the official Peltor website. If you require technical support or have questions not covered in this manual, please contact Peltor customer service directly. Keep your proof of purchase for warranty claims.
Note: Product specifications and features are subject to change without notice.





