Product Name: UHF dragged four wireless conference system HS940 / HS965 Series: Wireless Microphones Specifications: Product Description: Specifications: Model: HS-940 / HS965 Operating Frequency: 800.100MHz ~ 821.600MHz 740.100MHz ~ 768.400MHz frequency response : 80-20000HZ maximum input level: LINE: 27dBV input impedance: Auxiliary input: 50KΩ series input: 20KΩ balance: 300Ω output impedance: Imbalance: 400Ω series output: 100Ω Wireless Conference Microphone Type: Condenser microphone directivity: Heart type directional Working distance: no barrier interference 40M operating frequency: 800.100MHz 821.600MHz 740.100MHz 768.400MHz frequency stability:?? ± 0.005% vibration modes: fixed frequency quartz crystal oscillator frequency response: 100HZ ~ 15000HZ modern cultural life in microphone , are likely to be used on many occasions wireless microphones. However, Shure wireless microphones, wireless microphones people still have a lot of choice and use of errors, such as the effective working distance, people always think that the greater the microphone test of RF power, the farther away from their work can be found in the actual work is often not the case. Another handset microphone manufacturers publish technical indicators, sometimes puzzling. There is no essential difference between the manufacturers of wireless microphones on the principle that many technical indicators product is very good, but the actual use but to no avail. In practice, the technical indicators microphone testing is a problem, because the city does not have a lot of use of units of a full set of radio laboratory measuring instruments, can not be tested for index products. Microphones | Wuhan Jiuhua video (certified) | microphone provided by Wuhan Engineering Co., Ltd. Jiuhua video. Jiuhua Video Engineering Co., Ltd., Wuhan (www.jowa-tech.com) is a leader in Wuhan, control and adjust the equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs . Wuhan Jiuhua video leadership with the staff warmly welcome all inquiries negotiations to create a better video Wuhan Jiuhua future.