●Ultra high frequency (UHF) transmission, true diversity reception
●Dual CPU control, metal casing, PLL phase-locked loop technology, noise detection
●Adjustable with 100 frequency points, easy to operate, auto scan
●Controlled by microcomputer CPU: the entire hardware circuit of the system is controlled by microcomputer
●It can perform processing such as frequency selection, display, mute lock, battery capacity monitoring, etc., and realize various functions that are difficult to achieve in traditional models
●Use high-performance LCD for display, all control menus can be displayed on the LCD screen, which is convenient to control the system

System Technical Parameters

Carrier frequency band: UHF 640～690MHz

Modulation: FM

Oscillation mode: PLL phase locked frequency synthesizer

Frequency Stability: ±0.0005%

Sensitivity: When the offset is equal to 25KHz and input 6dBμV, S/N>60dB

Maximum offset: ±45kHz

Bandwidth: 40MHz

S/N ratio >108 dB

T.H.D. <0.4% @ 1 KHz

Frequency response:  65Hz~18kHz ± 3dB

Maximum output voltage: Balanced: -20dBV/100Ω

Unbalanced: -4dBV/5KΩ

Output socket: 1 x XLR&1 x 6.3mm unbalanced sockets

Working distance: Generally 100m (open space)

Power: 100 - 240V

Transmitter Technical Parameters

Harmonic radiation: < -63dBm

Bandwidth: 20MHz

Maximum offset: ±45kHz

Power output: 30mW

Frequency response: 50Hz~18KHz

Maximum input sound pressure: 130dB SPL

Handheld Microphone: Dynamic

Lapel Microphone: Omnidirectional

Headworn Microphone: Cardioid

Battery: AA*2

Current consumption: <110 mA

VIS-UH901.................. Wireless Handheld Microphone set

VIS-UH902.................. Wireless Lapel Microphone set

VIS-UH903.................. Wireless Headworn Microphone Set