UHF 100-frequency 2-way sync. diversity wireless microphone receiver module with LCD display. Can be used in Stage Pro, Focus 505 and Focus Pro, Apex, and new Challenger Portable PA and the QR-2000N and 4000N module frames.

Simple to install - slides into place with guide rails and a multipin connector.  Another world class industry leading innovation from Chiayo Electronics in Taiwan.


  • Patented IrDA technology for 2-way data transfer between transmitter and receiver. Taiwan patent No. : 94128675.
  • UHF synthesized diversity for highest quality and dropout-free reception.
  • Helical Filter RF front end ensures high selectivity.
  • Excellent IF design delivers high image and spurious rejection.
  • Anti-interference Pilotone circuit.
  • RF noise squelch circuit.
  • Auto-scan function searches for the cleanest frequency and simplifies multi-channel setup.
  • Squelch control accessible via LCD.
  • Power and volume control switch.
  • UP / DOWN channel selection key.
  • Blue LCD backlit display channel, RF, AF, frequency and squelch indicator.
  • Battery low indicator.
  • Balanced and unbalanced audio output.
  • 20-pin connection for easy installation.
Suits Focus StagePro /QR-2000N & SQ-6100 IrDA / SM-1100 IrDA
Model SDR-8100M IrDA
Frequency Range UHF 600-900MHz
Switching Bandwidth 25MHz
Switchable Frequencies 100
Display Screen LCD blue backlit
Oscillation PLL Synthesized
Frequency Stability ±0.005%
Frequency Scan Yes
Receiving Method Diversity
2-Way synchronization Yes
Sensitivity -100dBm at S/N ratio > 80dB
Image Rejection > 85dB
Spurious Rejection > 85dB
S/N Ratio > 110dB
Peak Deviation ±40KHz
T.H.D. < 0.5%
Audio Outputs Unbalanced: +4dBm (1.25V)
Balanced: +10dBm (2.5V)
Squelch RF noise squelch & Pilotone squelch
Power Supply DC 12V
Weight (g) 113
Dimensions (mm) 73*138*36
Matched Transmitter SQ-6100/5100/2100 IrDA,SM-5100/6100 IrDA
Matched Amplifier Stage Pro, Challenger C-1000-D(BD), Focus (2016+), Apex  
Matched Receiver QR-2000N / 4000N


100Ch LCD Wireless Mic Receiver Module, IrDA 624

  • Product Code: SDR-8100M-IRDA
  • U.O.M: ea
  • Price: $260.00 (GST Excl.)

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