BTECH QHM22 Weatherproof Heavy Duty Speaker Microphone User Manual

1. Introduction

The BTECH QHM22 Speaker Microphone is a robust accessory designed for two-way radios. It features a heavy-duty construction suitable for demanding environments such as construction sites and industrial use. This speaker microphone provides clear audio transmission and reception, enhancing communication efficiency.

2. Product Features

• High Impact Casing: Constructed with impact-resistant PVC (IP54 rated) for durability.
• Weatherproof Design: Offers resistance against shock, wind, dust, and splashes.
• Reinforced Cabling: Features high-grade, reinforced cabling for extended lifespan.
• Clear Audio: Equipped with a high-quality microphone for crystal clear audio transmission and a speaker for clear reception.
• 360° Rotating Clip: Includes an 8-position reinforced stainless steel spring clip for secure attachment to clothing or gear.
• 3.5mm Audio Jack: Built-in miniature earphone jack for connecting a listen-only earpiece (e.g., QHM01 Surveillance Earpiece) for private listening in loud environments.
• K1 Series 2-Pin Connector: Compatible with a wide range of Kenwood K1 Series 2-pin two-way radios.

Figure 2.1: The BTECH QHM22 Speaker Microphone connected to a two-way radio, illustrating its robust design, durable Kevlar cable, and weatherproof construction. This image emphasizes the product's suitability for rugged use.

Figure 2.2: A hand holding the BTECH QHM22 Speaker Microphone, showcasing its impact-resistant PVC casing and the high-quality microphone grille. Text overlays indicate its resistance to shock, wind, dust, and splash, and its crystal-clear audio capabilities.

Figure 2.3: The back of the BTECH QHM22 Speaker Microphone, highlighting its 360-degree rotating stainless steel clip. This feature allows for flexible and secure attachment to various points on clothing or gear.

Figure 2.4: A side view of the BTECH QHM22 Speaker Microphone, clearly showing the built-in 3.5mm miniature earphone jack. This jack allows users to connect a listen-only earpiece for discreet communication or use in noisy environments.

3. What's in the Box

• 1 x BTECH QHM22 Heavy Duty Platinum Speaker Mic

4. Setup and Installation

1. Identify the K1 Accessory Jack: Locate the 2-pin K1 accessory jack on your compatible two-way radio. This is typically found on the side of the radio, often protected by a rubber cover.
2. Connect the Speaker Microphone: Carefully align the 2-pin K1 connector of the QHM22 Speaker Microphone with the radio's accessory jack. Insert the connector firmly until it is fully seated. Ensure a secure connection to prevent intermittent audio or transmission issues.
3. Secure the Microphone: Use the 360° rotating stainless steel clip on the back of the speaker microphone to attach it securely to your lapel, collar, or other convenient location. Adjust the clip's position for optimal comfort and accessibility.
4. Optional Earpiece Connection: If using a listen-only earpiece (sold separately), plug its 3.5mm connector into the miniature earphone jack located on the side of the QHM22 Speaker Microphone.

Figure 4.1: A detailed diagram illustrating the key components of the BTECH QHM22 Speaker Microphone, including the Push-To-Talk (PTT) button, precise microphone, high-quality speaker, 3.5mm earphone jack, and the 2-pin Kenwood K1 connector. This provides a visual guide for setup.

5. Operating Instructions

1. Receiving Audio: Once connected, audio from your radio will be routed through the speaker microphone. Ensure the radio's volume is adjusted to a comfortable listening level.
2. Transmitting (Push-To-Talk - PTT): To transmit, press and hold the large Push-To-Talk (PTT) button located on the side of the speaker microphone. Speak clearly into the microphone grille. Release the PTT button when you have finished speaking to return to receive mode.
3. Using an Earpiece: If an earpiece is connected to the 3.5mm jack, audio will be directed to the earpiece for private listening. The PTT button on the speaker microphone will still function for transmission.

6. Compatibility

The BTECH QHM22 Speaker Microphone is designed for use with all Kenwood K1 Series 2-Pin Two-Way Radios. This includes, but is not limited to, the following brands and models:

• BTECH: DMR-6X2, UV-5X3, GMRS-V1, MURS-V1
• BaoFeng: BF-F8HP, UV-5R Series, BF-888S, UV-3R+, UV-82C, UV-82HP, UV-82 Series
• AnyTone: AT-D868UV
• TYT: MD-380, MD-390, and other TYT radios with Kenwood 2 Pin Standard
• Arcshell: AR-5, AR-6
• Retevis: H-777, RT-21
• Radioddity: GD-77
• Kenwood: All radios with the 2-pin K1 type connector

Figure 6.1: The BTECH QHM22 Speaker Microphone positioned alongside a compatible two-way radio, visually representing its intended use. The image includes text detailing a comprehensive list of compatible radio brands and specific models that utilize the Kenwood K1 Series 2-pin connector.

7. Maintenance

• Cleaning: Wipe the speaker microphone with a soft, damp cloth to remove dust and dirt. Avoid using harsh chemicals or abrasive cleaners.
• Storage: Store the microphone in a dry, cool place away from direct sunlight and extreme temperatures when not in use.
• Cable Care: Avoid sharp bends or excessive pulling on the cable to prevent internal damage.
• Connector Inspection: Periodically check the 2-pin connector for any signs of wear or corrosion.

8. Troubleshooting

• No Audio from Speaker Mic:
  • Ensure the 2-pin connector is fully and securely inserted into the radio's accessory jack.
  • Check the radio's volume level.
  • If an earpiece is connected, ensure it is functioning correctly or try removing it to test the main speaker.
• Cannot Transmit (PTT not working):
  • Verify the speaker microphone is correctly connected to the radio.
  • Ensure the radio is powered on and in a transmit-ready state.
  • If a 3.5mm earpiece is connected, some radio models or specific earpieces might disable PTT functionality on the mic. Try disconnecting the earpiece.
• Poor Audio Quality (Transmit or Receive):
  • Ensure the microphone grille is not obstructed.
  • Check for damage to the cable or connectors.
  • Test with another compatible radio or speaker microphone if available to isolate the issue.

9. Specifications

10. Warranty and Support

For warranty information and technical support, please refer to the official BTECH website or contact your authorized BTECH dealer. Ensure you retain your proof of purchase for warranty claims.

Manufacturer: BTECH

Website: baofengtech.com