1. Introduction and Overview
This manual provides detailed instructions for the proper use, setup, and maintenance of your PD780 PTT Mic Earpiece. This wired acoustic tube earpiece is designed for professional communication, offering clear audio and reliable push-to-talk (PTT) functionality. It is specifically compatible with a range of Hytera two-way radio models, ensuring seamless integration for various communication needs.
The earpiece features a multi-pin connector for secure attachment, a sensitive PTT button and microphone for effective communication, and a reinforced TPU cable for durability.
2. Package Contents
Please verify that all items listed below are present in your package:
- 1 x PD780 PTT Mic Earpiece with Acoustic Tube
- 1 x Spare Ear Tip (typically included with acoustic tube earpieces)

Image: All components included in the package, featuring the earpiece, acoustic tube, PTT microphone unit, multi-pin connector, and a spare ear tip.
3. Setup
Follow these steps to set up your PD780 PTT Mic Earpiece with your compatible Hytera two-way radio:
- Connect the Earpiece to the Radio: Locate the multi-pin accessory port on your Hytera radio. Align the multi-pin connector of the earpiece with the radio's port and gently push until it clicks securely into place. Ensure a firm connection to prevent audio interruptions.

Image: Detailed view of the multi-pin connector, showing its design for secure attachment to compatible radios.
- Wear the Earpiece: Insert the acoustic tube's ear tip comfortably into your ear. The transparent acoustic tube should route discreetly behind your ear.
- Position the PTT Microphone: The PTT (Push-To-Talk) microphone unit features a sturdy clip. Attach this clip to your collar, lapel, or any convenient location that allows the microphone to be close to your mouth for clear voice transmission and easy access to the PTT button.

Image: The PTT microphone unit, highlighting the clip for attachment to clothing.

Image: Overview of the entire earpiece system, illustrating the connection points and components.
4. Operating Instructions
Once the earpiece is properly connected and positioned, you can begin using it for communication:
- Receiving Audio: Audio from your radio will be transmitted directly to your ear via the acoustic tube. Adjust the volume on your Hytera radio to a comfortable listening level.
- Transmitting Audio (Push-To-Talk): To speak, press and hold the PTT button on the microphone unit. Speak clearly into the microphone. Release the PTT button when you have finished speaking to return to receive mode.
5. Maintenance
Proper maintenance will extend the lifespan of your earpiece and ensure optimal performance:
- Cleaning the Ear Tip and Acoustic Tube: Regularly clean the ear tip with a mild soap and water solution, then rinse thoroughly and allow to air dry completely before reattaching. The acoustic tube can be cleaned by carefully detaching it and flushing with water, ensuring it is fully dry before reassembly.
- Cable Care: The earpiece features a reinforced TPU cable. Avoid sharp bends, excessive pulling, or tangling to prevent damage. Store the cable neatly when not in use.
- Storage: When not in use, store the earpiece in a clean, dry place away from extreme temperatures and direct sunlight.
6. Troubleshooting
If you encounter issues with your earpiece, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No audio from earpiece | Loose connection; Radio volume too low; Earpiece malfunction | Ensure the multi-pin connector is fully inserted. Increase radio volume. Test with another compatible earpiece if available. |
| Unclear or distorted audio | Dirty ear tip/acoustic tube; Damaged cable; Radio interference | Clean the ear tip and acoustic tube. Inspect the cable for visible damage. Move away from potential sources of interference. |
| PTT button not transmitting | Loose connection; PTT button malfunction | Verify the earpiece is securely connected to the radio. Ensure the radio is powered on and functioning correctly. |
7. Specifications
| Product Name | PD780 PTT Mic Earpiece |
| Brand | Generic |
| Connectivity Technology | Wired |
| Compatible Devices | Hytera PD702, PD702i, PD702G, PD702Gi, PD780, PD782, PD782i, PD708, PD788, PD580, PD700, PT580H, PT580, PD782, PD782i, PD782g walkie talkies |
| Material | Silicone, Plastic |
| Cable Feature | Reinforced TPU, Retractable |
| Control Type | Call Control (PTT) |
| Earpiece Shape | In-ear (Acoustic Tube) |
| Item Weight | 5.6 ounces |
| Color | Black |
8. Warranty and Support
This product comes with a 1-year warranty from the date of purchase, covering manufacturing defects. Please retain your proof of purchase for warranty claims.
For technical support, troubleshooting assistance, or warranty inquiries, please contact your retailer or the manufacturer's customer service. Refer to the product packaging or purchase documentation for specific contact information.





