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BK-222+BK02 Wireless Microphone for Live Stage Performance

# Product Features

1. Operates on UHF 550–960 MHz frequency band to avoid signal interference.

2. True Diversity receiving circuit ensures steady signal transmission without signal dropouts and eliminates receiving dead zones.

3. Adopts digital pilot tone technology; 30 frequency groups with 8 frequency points each, supporting simultaneous use in up to 100 KTV rooms with zero mutual interference.

4. Supports auto frequency scanning and infrared IR pairing for fast frequency matching.

5. Built-in PLL phase-locked loop frequency stabilization system, including 65 preset channels and 100 freely adjustable frequency points.

6. Transmitter and receiver equipped with color TFT screens to display audio level, battery voltage and menu settings visually.

7. The receiver supports adjustable high/low RF transmitting power.

8. Optimal working distance: 80 meters.

9. Standard 19-inch rack-mount design for easy cabinet installation.

# Application Scenarios

1. Large-scale stage performances

2. Stacked system deployment for professional audio engineering projects

Overall Technical Specifications
Frequency Range: UHF 550–960 MHz (compliant with local regional standards)
Frequency Stability: <±30 ppm
Dynamic Range: >102 dB
Total Harmonic Distortion: <0.5%
Frequency Response: 40 Hz–15 kHz ±3 dB
Audio Output: Balanced output: 400 mV; Mixed output: 400 mV

Receiver Parameters
Input Voltage: 13.5 V DC
Power Consumption: <5 W
Signal-to-Noise Ratio (SNR): >95 dB
Image Rejection Ratio: >80 dB
Adjacent Channel Rejection Ratio: >80 dB
Receiving Sensitivity: 5 dBuV
Pre-emphasis De-emphasis: 50 μs

Handheld Wireless Microphone Transmitter
Transmit Power: 30 mW
Modulation Mode: FM Frequency Modulation
Maximum Deviation: 40 kHz
Spurious Harmonic Emission: <-60 dB
Operating Voltage: 3 V DC (powered by 2×1.5 V AA batteries)
Continuous Working Time: 6–8 hours

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