EARMOR M51 PTT Adapter Instruction Manual

1. Introduction

The EARMOR M51 Push-To-Talk (PTT) adapter is designed to facilitate communication between EARMOR tactical headsets and compatible two-way radios, specifically those utilizing Kenwood or Baofeng dual-pin connectors. This adapter features a Military Standard 7.0 plug for headset connection, ensuring secure and reliable operation in demanding environments. It provides a simple and effective method for transmitting voice communications.

Image 1.1: The EARMOR M51 PTT adapter, featuring its main unit, coiled cable, and dual-pin radio connector. This image displays the complete adapter unit.

2. Compatibility and Important Warnings

The EARMOR M51 PTT adapter is engineered for specific compatibility. Adherence to these guidelines is crucial for proper function and to prevent damage to your equipment.

• EARMOR Headset Compatibility: This PTT adapter is specifically designed for seamless integration with EARMOR headsets that utilize a Military Standard 7.0 plug.
• Radio Compatibility: Compatible with Kenwood and Baofeng two-way radios that use a standard dual-pin connector.
• Important Warning: This PTT adapter is not compatible with Z-Tactical, Element, or other civilian tactical headsets, nor with PELTOR brand headsets. It is designed to work exclusively with MSA and EARMOR headsets due to differing wiring standards (Military vs. Civilian).

Image 2.1: A diagram illustrating the distinct wiring configurations for military (NATO J11) and civilian headset plugs. This visual clarifies why the EARMOR M51 PTT adapter is exclusively compatible with EARMOR headsets, which adhere to military wiring standards.

3. Setup Instructions

Follow these steps to correctly connect your EARMOR M51 PTT adapter to your headset and radio.

1. Connect to EARMOR Headset: Insert the Military Standard 7.0 plug from your EARMOR headset into the corresponding port on the EARMOR M51 PTT adapter. Ensure the connection is firm and secure.


Image 3.1: A close-up view of the EARMOR M51 PTT adapter, highlighting the input port for the military standard 7.0 plug from an EARMOR headset.

2. Connect to Radio: Insert the dual-pin connector of the PTT adapter into the microphone and speaker jacks of your compatible Kenwood or Baofeng two-way radio. The larger pin typically goes into the speaker jack, and the smaller pin into the microphone jack.


Image 3.2: A detailed image of the dual-pin radio connector on the EARMOR M51 PTT adapter, designed for compatibility with Kenwood and Baofeng two-way radios.

3. Secure Placement: Utilize the integrated clip on the PTT adapter to secure it to your gear (e.g., vest, belt) in an easily accessible location.

Image 3.3: The EARMOR M51 PTT adapter shown clipped onto tactical gear, illustrating a typical and accessible placement for operational use.

4. Operation

Operating the EARMOR M51 PTT adapter is straightforward:

• Push-To-Talk Function: To transmit your voice, press and hold the large button on the PTT adapter. Speak clearly into your headset's microphone.
• Release to Listen: Release the button to stop transmitting and return to receive mode, allowing you to hear incoming communications.
• Optional M50 Finger Push Button: The mini jack socket on the PTT adapter allows for the connection of an optional M50 Finger Push Button (sold separately) for remote PTT activation.

5. Maintenance

Proper care will ensure the longevity and reliable performance of your EARMOR M51 PTT adapter:

• Keep Dry: Avoid exposing the PTT adapter to excessive moisture. While it features a rubber cover for dust and water resistance, it is not fully waterproof.
• Clean Connections: Periodically inspect and gently clean the connectors to ensure optimal signal transmission. Use a dry, soft cloth.
• Storage: Store the adapter in a cool, dry place when not in use. Avoid extreme temperatures.

6. Troubleshooting

If you encounter issues with your EARMOR M51 PTT adapter, consider the following:

• No Transmission/Reception:
  • Ensure all connections (headset to PTT, PTT to radio) are fully seated and secure.
  • Verify that your headset is an EARMOR brand headset and not a civilian model (refer to Section 2: Compatibility).
  • Check your radio's volume and channel settings.
• Poor Audio Quality:
  • Inspect connectors for dirt or damage.
  • Ensure the headset microphone is properly positioned.
  • Test with another compatible radio or headset if available to isolate the issue.

7. Specifications

8. Warranty and Support

For warranty information or technical support regarding your EARMOR M51 PTT adapter, please refer to the official EARMOR website or contact your authorized dealer. Keep your purchase receipt for warranty claims.