True Diversity Quad-Channel and Headset Microphones TK-614UH (Head-worn)
1. Digital pilot, 2048-bit symmetric encryption algorithm to prevent eavesdropping
Designed for professional wireless audio applications, this digital wireless microphone system combines encrypted digital transmission, automatic frequency management, noise control, and real-time power monitoring. The configuration includes one receiver host and four head-mounted microphones, providing a practical solution for multi-microphone applications where stable wireless communication and clear audio transmission are required.
Product Features
Digital Wireless Transmission
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Uses a digital transmission architecture with a 2048-bit symmetric encryption algorithm to help protect wireless audio signals from unauthorized interception.
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PLL (Phase-Locked Loop) frequency synthesis technology provides controlled and stable frequency operation.
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Dynamic audio compression and automatic level control help maintain a consistent audio output during use.
Intelligent Frequency Management
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One-click automatic frequency search simplifies system setup.
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Intelligent digital signal field-strength FI detection helps identify available signal conditions.
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Fixed-point frequency monitoring allows the operating frequency status to be monitored during operation.
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The receiver host incorporates a built-in key lock function to help prevent accidental operation or setting changes.
Power Monitoring and Warning
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Monitors transmitter and receiver power status during operation.
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Smart battery monitoring provides a low-voltage warning to indicate when battery power is running low.
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Real-time power information helps operators manage equipment status during extended use.
Flexible Audio Output
The receiver supports two types of audio output connections:
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XLR balanced independent outputs
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6.3 mm unbalanced hybrid outputs
This output configuration provides greater flexibility when connecting the receiver to different audio systems and professional equipment.
Noise Control and Audio Processing
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Noise Lock and Noise Control functions help manage unwanted wireless noise.
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Audio Code Navigation works together with Noise Lock Control for improved signal management.
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PLL frequency synthesis, dynamic compression, and automatic level control work together to support stable audio output.
Multi-Microphone Configuration
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1 receiving host + 4 head-mounted microphones
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Suitable for applications requiring multiple wireless microphones to operate through a shared receiver system.
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Head-mounted microphone configuration allows hands-free operation for users during presentations, instruction, communication, or other professional audio applications.
Receiver Host Specifications
| Parameter | Specification |
|---|---|
| Main Operating Voltage | DC 12V |
| Working Current | 1000 mA |
| Power Consumption | 12 W |
| RF Carrier Frequency Range | 632.00–698.70 MHz |
| Frequency Response | 80 Hz–15 kHz (±3 dB) |
| Dynamic Range | >110 dB |
| System Distortion / THD | <0.5% |
| Signal-to-Noise Ratio | S/N >100 dB(A) |
| RF Sensitivity | -100 dBm at 30 dB S/N ratio |
| Mirror Suppression | >75 dB |
| Power Supply | 12V / 1A |
| Reception Sensitivity | -105 dBm for diversity reception |
| THD Distortion | <0.01% |
| Audio Output Voltage | 0.3 V |
| Adjacent Frequency Interference Suppression | >60 dB |
Waist Microphone Specifications
The waist microphone/transmitter section is designed for wireless audio transmission and portable operation. Its key specifications include:
| Parameter | Specification |
|---|---|
| Gain | 10 dB |
| Microphone Type | Capacitive |
| Input Impedance | 5 KΩ / Small Diaphragm Microphone: 10 KΩ |
| RF Output Power | 30 mW |
| Harmonic Suppression | >50 dB |
| Power Supply | 1.5V × 2 (AA) |
System Configuration
The complete configuration includes:
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1 × Wireless receiving host
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4 × Head-mounted microphones
The system combines frequency management, wireless signal monitoring, encrypted digital transmission, noise control, and multiple audio output options in one setup. Its configuration is intended for professional users who need several wireless microphones to work with a centralized receiver while maintaining convenient operation and signal management.
Key Advantages for B2B Applications
For distributors, system integrators, and professional audio equipment buyers, the system offers several practical features:
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Encrypted digital wireless transmission
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Automatic frequency searching
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Digital signal field-strength detection
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Receiver and transmitter power monitoring
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Low-battery warning
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Built-in receiver key-lock function
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XLR balanced and 6.3 mm unbalanced audio outputs
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Noise Lock and Noise Control functions
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Four head-mounted microphones supported by one receiving host
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PLL frequency synthesis technology
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Dynamic audio compression and automatic level control
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Diversity reception with high RF sensitivity
The combination of these functions provides a flexible wireless audio platform for B2B customers looking for a multi-microphone system with digital signal management, power monitoring, and professional audio connectivity.
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