RETEVIS EH070K Aviation Headset User Manual

1. Introduction

The RETEVIS EH070K is a robust 2-pin binaural noise reduction aviation headset designed for clear communication in high-noise environments. It is compatible with various walkie-talkies, including models from Kenwood and Baofeng UV-5R, making it suitable for applications such as airports, construction sites, industrial workshops, and security operations.

Figure 1: Front view of the RETEVIS EH070K Aviation Headset.

2. Features

• Durable Construction: Features a high elastic metal bracket for enhanced strength and longevity.
• Comfort-Oriented Design: Equipped with super soft, comfortable head cushions and ear covers for extended wear.
• Adjustable Microphone: The microphone offers 300° rotation and reliable positioning, suitable for both left and right ear usage.
• High-Quality Wiring: Utilizes Kevlar-type PU wire for excellent tensile strength and extended service life.
• Adjustable Volume & Noise Reduction: Includes a loudspeaker with adjustable volume and up to -24dB noise reduction, ideal for noisy environments.
• Effective Noise Cancellation: Microphone features a matching noise reduction circuit for superior noise cancellation performance.

Figure 2: Detailed view of the headset's padded headband, adjustable microphone, and volume control.

3. Specifications

4. Package Contents

The standard package for the RETEVIS EH070K headset includes:

• 1 x EH070K Headset
• 1 x 5 Pin Aviation Headset Link Line

Figure 3: Contents of the EH070K package.

5. Setup and Installation

1. Connect the Link Line: Locate the Mini XLR 5Pin Jack on the headset and the corresponding connector on the 5 Pin aviation headset link line. Align the pins and gently push the connector into the jack until it clicks securely.
2. Connect to Radio: Plug the other end of the 5 Pin aviation headset link line into the compatible 2-pin port on your walkie-talkie (e.g., Kenwood, Baofeng UV-5R). Ensure a firm connection.
3. Adjust Headset Fit: Place the headset over your head. Adjust the headband for a comfortable and secure fit. The padded head cushion should rest comfortably on your head, and the ear cups should fully enclose your ears to maximize noise reduction.
4. Position Microphone: Adjust the flexible microphone boom. The microphone can rotate 300° to be positioned on either the left or right side. Position the microphone approximately 1-2 cm from your mouth for optimal voice pickup.

Figure 4: Detail of the Mini XLR 5Pin Jack connection.

6. Operation

• Power On/Off: The headset draws power from the connected walkie-talkie. Ensure your walkie-talkie is powered on for the headset to function.
• Volume Adjustment: Use the volume knob located on one of the ear cups to adjust the listening volume to a comfortable level.
• Transmitting: To transmit, press and hold the Push-to-Talk (PTT) button on your walkie-talkie or the inline PTT if your link line includes one. Speak clearly into the microphone. Release the PTT button to listen.
• Noise Reduction: The headset's passive noise reduction capabilities, combined with the active noise reduction circuit in the microphone, will help filter out ambient noise, providing clear communication in loud environments.

Figure 5: Headset with visible volume control and microphone.

7. Maintenance

• Cleaning: Use a soft, damp cloth to wipe down the exterior of the headset and ear cups. Avoid using harsh chemicals or abrasive cleaners. Ensure no moisture enters the microphone or speaker grilles.
• Storage: Store the headset in a dry, cool place away from direct sunlight and extreme temperatures. When not in use, it is recommended to store it in its original packaging or a protective case to prevent damage.
• Cable Care: Avoid sharply bending or twisting the link line. Do not pull on the cable to disconnect it; always grasp the connector firmly.
• Ear Cushion Replacement: Over time, ear cushions may wear out. Replacement ear cushions are available to maintain comfort and noise reduction performance.

8. Troubleshooting

• No Audio:
  • Ensure the 5-pin link line is securely connected to both the headset and the walkie-talkie.
  • Check if the walkie-talkie is powered on and functioning correctly.
  • Verify the headset's volume knob is turned up.
  • Test the headset with another compatible walkie-talkie if possible.
• Poor Audio Quality / Static:
  • Check for loose connections at both ends of the link line.
  • Ensure the microphone is positioned correctly, not too far or too close to your mouth.
  • Verify the walkie-talkie's signal strength and channel settings.
  • Inspect the cable for any visible damage.
• Microphone Not Transmitting:
  • Confirm the PTT button is being pressed fully during transmission.
  • Check microphone positioning.
  • Ensure the microphone boom is not damaged.

9. User Tips

• Optimal Comfort: Take time to adjust the headband and microphone boom for the best fit and sound clarity. A proper fit enhances both comfort and noise reduction.
• Earplug Maintenance: For users who prefer gel earplugs or find their current ear cushions wearing out, consider replacing them to maintain optimal comfort and acoustic seal. Check with RETEVIS Official Store for compatible replacement parts.
• Environmental Use: This headset is specifically designed for noisy environments. Ensure the ear cups fully seal around your ears to benefit from the maximum -24dB noise reduction.

10. Warranty and Support

RETEVIS provides a Lifetime Warranty for this product. For any quality problems, customers can enjoy 7 days to return the item. Most items are shipped within 48 hours. For support inquiries, all emails are answered within 24 hours.

For further assistance or to inquire about replacement parts, please contact the RETEVIS Official Store customer service.

Figure 6: RETEVIS Warranty and Service Overview.