Product Characteristics
1. Use the UHF640-690MHz frequency band to avoid interference with frequencies 2. Flexible and convenient operation 3. Fully automatic infrared frequency matching, enabling the transmitter and receiver to automatically synchronize transmission and reception 4. Adopting a phase-locked loop PLL frequency synthesis stabilization system, providing 200 channels 5. Use the latest high-frequency filter to filter out out of band interference signals to the maximum extent possible 6. High frequency circuit design with secondary frequency conversion, with extremely high sensitivity 7. Multiple noise suppression control circuits, rejecting external interference 8. Specially designed speech compression expansion circuit, greatly improving signal-to-noise ratio 9. Unique circuit design, dynamic, wide frequency response, and low noise
Parameter
System indicators: 1. Frequency range: UHF 640-690MHz 2. Modulation method: Broadband FM 3. Adjustable range: 50MHz 4. Number of channels: 8x25 5. Channel spacing: 250KHz 6. Frequency stability: within ± 0.005% 7. Dynamic range: 100dB 8. Maximum frequency deviation: ± 45KHz 9. Audio response: 80Hz-18KHz (± 3dB) 10. Comprehensive signal-to-noise ratio: ＞ 105dB 11. Comprehensive distortion: ≤ 0.5% 12. Working temperature: -10 ℃~50 ℃ Receiver specifications: 1. Receiver mode: secondary frequency conversion superheterodyne 2. Intermediate frequency: First intermediate frequency: 110MHz, second intermediate frequency: 10.7MHz 3. Wireless interface: BNC/50 4. Sensitivity: 12dB μ V (80dBS/N) 5. Sensitivity range: 12-32dB μ V 6. Stray suppression: ≥ 75dB 7. Maximum output level:+10dBV Emitter indicators: 1. Antenna program: The bodypack transmitter adopts a 1/4 wavelength whip antenna, and the handheld microphone is equipped with a spiral antenna 2. Output power: high frequency 30MW, low frequency 3MW 3. Stray suppression: -60dB 4. Power supply: Two AA DC 1.5V batteries 5 Usage time: greater than 10 hours at 30mW, greater than 15 hours at 3mW
