Lectrosonics UCR401

Compact Wireless Microphone Receiver with LCD, Digital Hybrid Wireless, Fixed Antennas

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The UCR401 is a high performance compact UHF wireless microphone receiver for mobile applications such as ENG and film production.
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Selected Model Price: $1,547.15
List Price: $1,840.00
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The UCR401 is a high performance compact UHF wireless microphone receiver for mobile applications such as ENG and film production. The compact size, battery and external power and rugged attached antennas are ideal for video camera mounted use. Unique DSP algorithms in the design provide full compatibility with all Lectrosonics 400 Series Digital Hybrid Wireless™ transmitters and variety of analog transmitters from Lectrosonics and some other manufacturers. Power is provided by two AA batteries, typically NiMH rechargeable types, or external DC supplied via a jack on the rear panel.

Microprocessor control enables SmartSquelch™ and SmartDiversity™ advanced reception techniques to minimize noise and dropouts in all conditions. The receiver differentiates between close and distant operation and adjusts the squelch threshold automatically. In environments with significant RF reflections, the diversity switching activity optimizes the antenna combining based upon an analysis of RF level and audio content.

Finding a clear operating channel is simplified with a choice of 256 frequencies across a 25.6 MHz bandwidth. A built-in RF spectrum analyzer scans the entire tuning range of the receiver and displays RF activity on the built-in LCD. Signal strength of other signals in the vicinity is indicated and empty sections of the spectrum are quickly identified with the graphical display. The analyzer will scan the entire spectrum and display the results in about 25 seconds, so it is very convenient to find a clear frequency in each new location.


  • Digital Hybrid Wireless™
  • SmartSquelch™ for noiseless muting
  • SmartDiversity™ for enhanced RF reception
  • 256 selectable UHF frequencies
  • DSP-based pilot tone squelch
  • LCD display with spectrum scanner
  • Balanced XLR audio output
  • Two AA batteries or DC power
  • Compatiblity with analog transmitters

Operating Frequencies

  • Block 21: 537.600 - 563.100
  • Block 22: 563.200 - 588.700
  • Block 23: 588.800 - 607.900, 614.100 - 614.300
  • Block 24: 614.400 - 639.900
  • Block 25: 640.000 - 665.500
  • Block 26: 665.600 - 691.100
  • Block 27: 691.200 - 716.700
  • Block 28: 716.800 - 742.300
  • Block 29: 742.400 - 767.900
  • Block 944: 944.100 - 951.900


  • Frequency Adjustment Range: 25.5 MHz in 100 kHz steps
  • Channel Separation: 100 kHz
  • Receiver Type: Triple conversion, superheterodyne,244 MHz, 10.7 MHz and 300 kHz
  • Frequency Stability: ±0.001 %
  • Front end bandwidth: 30 MHz @ -3 dB
  • Sensitivity: 20 dB Sinad: 1 uV (-107 dBm), Aweighted; 60 dB Quieting: 1.5 uV (-104 dBm), A weighted
  • Squelch quieting: Greater than 100 dB
  • AM rejection: Greater than 60 dB, 2 uV to 1 Volt(Undetectable after processing)
  • Modulation acceptance: 85 kHz
  • Image and spurious rejection: 85 dB
  • Third order intercept: 0 dBm
  • Diversity method: Phased antenna combining -SmartDiversity™
  • FM Detector: Digital Pulse Counting Detectoroperating at 300 kHz
  • Antenna inputs: Two, fixed whip
  • Audio outputs Rear Panel XLR adjustable from -50 dButo +5 dBu in 1 dB steps. Calibrated into a typical 10 k Ohm balanced load. Candrive 600 Ohm load.
  • LCD control panel: Main window: Pilot tone; antennaphase, receiver battery level; transmitter battery status; audio level, RFlevel; Frequency window: Frequency, TV channel; Transmitter switch setting;Audio output level adjustment: -50 dBu to +5 dBu; Battery level tracking: 0.1Vsteps, accuracy +/- 0.2V, Timer option available for NiMH batteries
  • Scanning mode: Coarse and fine modes for RF spectrumsite scanning
  • Audio test tone: 1 kHz, -50 dBu to +5 dBu output in 1dB steps; less than 1% THD
  • Transmitter battery type selection: 9 V alkaline, 9 Vlithium, AA alkaline, AA lithium, TIMER
  • Phase invert: Audio output phase normal or inverted
  • Smart NR (noise reduction): OFF, NORMAL, FULL modes(avail in 400 Series mode only)
  • Audio Performance (overall system): (These specsapply to 400 Series mode only.)
  • Frequency Response (Typ.): 32 Hz to 20 kHz (+/- 1 dB)System frequency response varies depending on transmitter used
  • THD: 0.2% (typical)
  • SNR at Receiver Output (dB): SmartNR OFF: 103.5 NoLimiting, 108.0 w/Limiting; SmartNR NORMAL: 107.0 No Limiting, 111.5w/Limiting; SmartNR FULL: 108.5 No Limiting, 113.0 w/Limiting
  • Input Dynamic Range: 125 dB (with full Tx limiting)
  • Rear Panel Controls and features: XLR balanced audiooutput jack; External DC input; Battery compartment acces.
  • Power Options: Ext DC: Minimum 6 Volts to maximum 18Volts DC; 1 W consumption, 80 mA at 12 VDC; Int Batt: Two AA 1.5 Voltalkaline, lithium or NiMH
  • Battery Life (typical): AA alkaline: 4 hourscontinuous, up to 10 hours intermittent; AA lithium: Up to 11 hours(continuous and intermittent); AA NiMH: (2500 mAH) 7.5 hours per chargetypical (continuous and intermittent)
  • Weight: 13 oz with batteries
  • Dimensions: 2.83" wide, 1.25" high, 4.64" deep

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