H-640 UHF Wireless Meeting Microphone

◆ System include 1 receiver and 4 transmitter microphone

◆ Operating frequency range: UHF 740-790MHz/610.00-659.75MHz

◆ Adopts CPU control and PLL combined technology

◆ Frequency stability: <±30PPm

◆ The FM maximum frequency could be adjustable within the range from -45 KHz to +45KHz

◆ It is equipped with the pre-warning display for weak battery, audio frequency response compressor and auto electricity level control circuit

◆ Adopt multi-channel high band and intermediate band frequency selective filtering, fully eliminate interference signal

◆ Build-in feedback eliminating technology which can decrease the feedback and noise effectively

◆ Perfect performance with the best chips and components; adopt SMD original mount design to enhance the product quality and stability

◆ Operation distance up to 100 meters with the best condition, 50 meters in normal condition

◆ Built-in multiple noise detecting circuit and TONE-LOCK system to make sure the system has strong anti-jamming function

• Wireless Microphone System Parameter:
  
  

  Operating Frequency	UHF 740MHz~789.75MHz  UHF 610.00MHz ~ 659.75MHz
  Frequency Stability	<±30PPm
  Audio Dynamic Range	>105dB
  T.H.D	<0.5%
  Frequency Response	50Hz-18KHz
  Audio Output	0-600mV (balanced);  0-300mV (unbalanced)
  Tone Frequency	32KHz-51.2KHz
  Transmitter Distance	50M~100M
  PLL combined technology	4 group system frequency  each group 60 points selection  totally 4*60=240 frequency points sharing

• Wireless Receiver Parameter (Main Unit):
  
  

  Operating Frequency	UHF 740MHz~789.75MHz  UHF 610.00MHz ~ 659.75MHz   (CPU controlled, adjustable)
  Power Supply	AC110V-230V, 50Hz~60Hz
  DC Power Input	DC12V 1200mA
  Power Consumption	8W
  S/N Ratio	>105dB
  T.H.D	<0.5%
  Frequencey Response	50Hz-18KHz

• Wireless Transmitter Parameter (Microphone Unit):
  
  

  Operating Frequency	UHF 740MHz~789.75MHz  UHF 610.00MHz ~ 659.75MHz  (CPU controlled, adjustable)
  Transmitter Power	High: 10dBm;  Low: 5dBm
  Input audio source	MIC in / Line in
  Modulation Type	FM
  Max Modulation	±45KHz
  Power	3V (2x AA 1.5V batteries or  1.2V-1800mAh rechargeable batteries)
  Working Time	8 hours