True graded wireless one-to-four gooseneck microphone

Product Description:The product uses a super-directional high-capacitance microphone capsule, offering excellent sound quality and frequency response. It features a lock-type secure plug-in separation structure to ensure highly reliable and stable performance. The independently designed new base makes it an ideal device for high-level conference projects requiring strict standards. It has a wide frequency response, clear and transparent sound, low noise, and a microphone ON/OFF switch with an exceptionally long lifespan. When the microphone is turned on, the red work indicator on the microphone capsule lights up. The gooseneck and base are separable, suitable for large, medium, and small conferences, public broadcasting, teaching, speech, and other occasions. ID code recognition makes it less susceptible to external interference.Key Features:* Operates in UHF 640~830MHz frequency band, using PLL frequency synthesis phase-locked loop technology, with adjustable frequencies. Up to 5 sets can be used simultaneously without interference.* Central control with integrated CPU, combined with a digital LCD interface display, easy to operate with excellent performance.* Multi-level narrowband RF and IF selective filtering effectively eliminate interference signals.* Audio compression and expansion technology greatly reduces noise and increases dynamic range.* The receiver uses multi-stage RF amplification with extremely high sensitivity.* Ideal operating distance: 80 meters.Conference Microphone Receiver Parameters:Operating Frequency: 640~830MHz (frequency can be changed as needed)DC Input Voltage: DC12V 1200mAOscillation Mode: Dual-phase locked frequency synthesis (PLL)Modulation Method: FMMaximum Frequency Deviation: ±50KHzFrequency Response: 60Hz～18000HzSignal-to-Noise Ratio: ≥89dBLow Frequency Attenuation: 125Hz 6dBOutput Impedance: 250ΩMaximum Pressure: 135dB SPL 1KHz at 1% T.H.DDynamic Range: ≥105dBS/N Ratio: ＞98dBT.H.D Distortion: ＜0.5%T2 Conference Microphone Parameters:Directionality: Condenser unidirectionalPower Supply: 2 AA batteries, 3VOperating Current: Standby ≦110mA, Speaking ≦180mASensitivity: -40dB±2dBModulation: FMOscillation Method: PLLDisplay: 2.8 inchFrequency Range: 640MHz --830MHz (adjustable as needed)Bandwidth: 30MHzOutput Power: 20mWOperating Time: 8-10 hours