UHF Professional wireless handheld microphone 

 SM-U82 & SM-U15 Technique parameter

 • RF range: 520-830 MHZ
 • Modulation mode: FM 
 • Bandwidth: 30 MHz each channel
 • Channel :200
 • Frequency stability:± 0.005%
 • Dynamic range: > 110 dB
 • Max. frequency deviation: ±5 KHz

 • Frequency response: 60 Hz - 18 KHZ (± 3 dB)
 • S/N ratio: > 105 dB
 • T.H.D: < 0.5%
  Receiver index
 • Receiver mode: Two frequency super heterodyne
 • Intermediate frequency: First intermediate frequency: 110 MHZ
                                         Second intermediate frequency: 10.7 MHz
 • Connector: BNC
 • Sensitivity: 12 dB (80 dBS/N)
 • Squelch: 0-40 dB
 • Spurious rejection: > 80 dB
 • Audio output: Unbanlanced: + 4 dB / (1.25 V) / 5K

                           Balance: : + 10 dB (2.5 V) / 600
 • Power supply: DC11-16 V (rated12V)
 • Current: single receiver, less than 220 mA,
                 double receiver, less than 350 mA

SM-U18 Technique parameter

 • RF range: 740-820 MHZ
 • Modulation mode: FM 
 • Band width: 80 MHz 
 • Max. frequency deviation: ±50 KHz

 • Frequency response: 40 Hz - 16KHZ (± 3 dB)

 • Dynamic range: > 105 dB (A weighted)
 • S/N ratio: > 105 dB
 • T.H.D: ≤ 0.5%(@ 1KHz)

 • Audio processing mode : Dynamic compression expansion technique

 • Operating temperature : 0°c  to + 50°c
  Receiver 
 • Receiver channel: Dual channels
 • Oscillation mode: PLL

 • Audio Output Level: 0-300 mV
 • Audio Output Impedance: 600 Ω
 • Image Rejection:≥ 85 dB
 • Power supply: DC 12-16 V/ 400 mA

 Transmitter
 • Oscillation mode: PLL 
 • Frequency stability: ≤ ± 10 ppm
 • Maximum modulation: ± 50 KHZ
 • Maximum output : 30 mW (in accordance with  national radio regulations)
 • Maximum input sound pressure: 130 dB SPL
 • Harmonic radiation: < - 55 dBc
 • Using batteries: 2 AA batteries