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MIPRO ACT-747 UHF Quad-Channel Wireless Receiver

MIPRO is a leading manufacturer of truly innovative wireless microphone systems. MIPRO's industry-leading technology, including AutoScan and patented ACT (Automatic Channel Targeting) channel sync setup, deliver the forward-thinking features that enable our customers to specify and install our systems with confidence. MIPRO's ACT Series systems are built to handle tough conditions, deliver superb RF reliability and transparent audio performance in a wide variety of professional venues and applications. The ACT 7-Series wireless systems are single, dual and quad channel ultra-wideband UHF frequency agile diversity systems that are affordable without sacrificing features and performance.


The ACT-747 is a UHF true diversity frequency agile quad-channel full rack receiver that covers 216MHz of spectrum with 2881 selectable frequencies per 72MHz band.  It features 400 presets arranged to provide up to easy set up and up to 48 channels of simultaneous operation.  The ACT-747 receiver has unique features not found anywhere else and is among the best analogue wireless systems available today.


  • Ultra-Wide bandwidth over one 72MHz wide band (5UA) and one 54MHz band (5NU). Up to 48 interference-free channel operation per band
  • Up to 400 selectable preset frequencies in 15 groups per band. Select and save 16 user defined presets from up to 2,881 frequencies in User Definable Group 16
  • EIA Standard 1 RU metal housing improves heat dissipation and shielding from spurious interference
  • PLL synthesized RF Technology with low spurious emissions and increased RF stability
  • Third generation RF circuitry features improved anti-interference characteristics and increased interference-free channel operation
  • The industry's only multi-functional autodimming VFD (vacuum fluorescent display)
  • MIPRO's patented and now industry standard "AutoScan" and "ACT" (Automatic Channel Targeting) channel set-up technology
  • Enhanced RF saturated dynamic range decreases interference and THD
  • True Diversity receivers with "PiloTone & NoiseLock" circuits improve reception with less interference
  • RF interference warning indicator
  • All controls are intuitive and easily accessible, enabling quick and easy system set-up via a single rotary switch
  • Switchable output levels
  • MIPRO RCS27 software allows real-time computer set up, control and monitoring
  • Reliable RF and transparent audio performance

Act-747 Specifications


  • Frequency Range: UHF 482 - 554 MHz
  • Preset Frequencies: 400 Band 5UA plus 16 user definable per band
  • Compatible Channels: 48 Presets Band 5UA
  • Receiving Mode: True Diversity
  • Oscillation Mode: PLL Synthesized
  • RF Stability: 0.005% (14 to 122°F)
  • Max Deviation Range: 68KHz, with Level Limiting
  • S/N Ratio: >105dB (A)
  • T.H.D.: >0.5% at 1KHz
  • Frequency Response: 50Hz~18KHz


  • Sensitivity: 6dBμV @ S/N > 80dB, 40KHz Dev
  • Bandwidth: 72MHz per band (2 Bands, 216MHz)
  • Frequency Range: 482 - 554, TV 16 - 27
  • Display: Vacuum Florescent
  • Dual Squelch Control: "NoiseLock & PiloTone" Circuit
  • Receiving Mode:  True diversity

  • Oscillation Mode:  PLL synthesized
  • S/N Ratio: > 108 dB(A)
  • Peak Deviation: ±68KHz
  • Max Output Level: Unbalanced +10, 0 or -6 dBV, Balanced +16, 0 or -6 dBV
  • Output Connectors: Balanced XLR
  • PC Interface: USB or RS-232 interface, Proprietary MIPRO ACT-BUS
  • Antenna Input: 50Ω Dual TNC Female Connector
  • Power Supply: 100 - 240VAC Switching
  • Dimensions: 19 x 1.7 x 10.5
  • Weight: 7.5lbs.
  • Housing: Metal: 1 RU
  • Matching Transmitters: Magnesium Alloy ACT-70H and ACT-70HC handheld microphones or ACT-70T and ACT-70TC body pack transmitters