Product Info

Model: SDR-5900 IrDA

UHF 19” Dual-Channel 2-Way Sync True Diversity Receiver

SDR-5900 IrDA is a professional wireless microphone system with excellent sound quality, stable performance and useful functions. The built-in channel-scanning works with the industry-leading IrDA® 2-way channel synchronizing technology to rapidly complete setting of non-interference channels. EIA Standard 1U rack-mountable metal chassis with high contrast LCD on the front panel displays antenna selection status and setting details, as well as monitoring the battery status and input volume of the connected transmitter to ensure the best sound quality. Easily complies with school, conference, karaoke and public broadcasting requirements.


• Auto Scan quickly searches for an interference-free working channel.
• World-first patented IrDA® technology provides rapid 2-way channel sync with one click.
• Channel, frequency, RF level, AF level, antenna selection.
• Battery status of the connected transmitter .
• Pilotone, noise-detector and squelch circuits prevent noise, interference and improve operation distance.
• True diversity reception for best performance and reliability.
• Adjustable SQ. Increases receiver range with higher sensitivity and reduces interference with lower sensitivity.
• Convenient gain/volume control(s) and switchable MIC-LINE output level.
• Single channel audio output jacks: balanced XLR or unbalanced 6.3mm.
• Mixed audio output jack: balanced XLR or unbalanced 6.3mm


ModelSDR-5900 IrDA
ChassisEIA standard 19" metal 1U
Receiving modeTrue diversity
Frequency rangeUHF 500 - 960 MHz
Bandwidth25 MHz
Preset frequencies100
Channel sync2-way (RX ⇔ TX)
Frequency response50 Hz - 18 KHz
Peak deviation± 40 KHz
SensitivityS/N > 80 dBm at 10 dBμV
S/N ratio> 110 dB(A)
T.H.D.< 0.5% @ 1 KHz
Receiving antennaDetachable at rear-end, TNC female.
OscillationPLL synthesized, frequency stability ± 0.005% (-10 - +60°C)
SquelchPilotone & Noise-cancelling dual-squelch circuit
Audio connectorBalanced XLR and unbalanced Ø6.3mm
Audio Output AdjustmentGain control circuit for adjustment of output volume
Output level switchMIC-LINE
Power supply12V DC / 1.0A
Dimensions (mm)420 × 205 × 44
Weight1.9 kg


Product Datasheet: Chiayo_SDR-5900-IrDA_AVMedia.pdf