MPN #SRC-A1    
Lectrosonics SRc (A1: 470.100 - 537.575 MHz, BLOCKS 470, 19, 20)


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The SRc consists of two separate receivers built into a single, ultra compact housing with adapters for video camera receiver slots and for stand-alone use.

Digital Hybrid Wireless technology provides superb, compandor-free audio quality and compatibility with other wireless systems. The RF performance is extreme- ly stable over a very wide temperature range, making the receiver perfectly suited to the rough environmental conditions found in field production.
A DSP compatibility mode allows the receiver to be used with a variety of Lectrosonics and other brands of wire- less systems and with Lectrosonics IFB transmitters.

The front panel features a menu-driven LCD interface and four membrane switches which are used to view and alter settings. The main LCD window displays the pilot tone indicator, diversity activity, RF level, audio level and transmitter battery status for both receivers. To find clear operating frequencies, a built-in spectrum analyzer scans across the tuning range of the receiver and dis- plays a histogram of RF activity within the tuning range. Areas of little or no RF activity are easily recognizable.

The two internal receivers can be operated separately, each using switching, antenna combining diversity, or in tandem with ratio diversity reception. The audio outputs of the receivers can be mixed internally, or left separated for discrete recording tracks or external mixing.

A variety of output adapters and mounting options are available for camera slot operation. On the SRb5P, a 5-pin connector next to the control panel provides audio output from both channels in addition to the camera slot outputs. The unit is powered from an external 6 to 18 volt DC source.

Digital Hybrid Wireless is a revolutionary design that combines digital audio with an analog FM radio link to provide both outstanding audio quality and exemplary, noise-free RF performance.
Using a patented algorithm to encode 24-bit digital audio information in the transmitter into an analog format, the encoded signal is then transmitted over an analog FM wireless link.
At the receiver, the signal is then decoded to restore the original digital audio. This process eliminates compandor artifacts and produces an audio frequency response flat to 20 kHz.

Operating Frequencies:
  • Tuning range A1: 470.100 - 537.575 MHz
  • Tuning range B1: 537.600 - 614.375 MHz
  • Tuning range C1: 614.400 - 691.175 MHz
  • Fits camera "slots," Lectrosonics Duopack adapter and Octopack multicoupler, and operates stand-alone with various adapters
  • Tunes over a 75 MHz range* (3 blocks)
  • Dual receiver design for two channels with phase switched diversity or single channel with ratio diversity operation
  • Digital Hybrid Wireless with compatibility modes for use with other transmitters
  • Tracking front-end filters for high performance in tough RF environments
  • LCD with RF spectrum scanning
  • SmartSquelchTM DSP-controlled, noise based filtering and squelch
  • DSP-based pilot tone for squelch control
  • IR sync port for quick transmitter setup (LMb, LT, HHa, HMa, & SSM)
  • SmartTune operation for quick and confident frequency selection
  • Operating Frequencies: Tuning range A1: 470.100 - 537.575 MHz
    Frequency selection steps: Selectable; 100 kHz or 25 kHz
    Receiver Type: Dual conversion, superheterodyne

    IF Frequencies:
  • Ch.1: 248.450 MHz and 350.000 kHz
  • Ch. 2: 243.950 MHz and 250.000 kHz

  • Frequency Stability: ±0.001 %
    Front end bandwidth: 20 MHz @ -3 dB
    Sensitivity @20 dB SINAD: 1.0 uV (-107 dBm), A weighted, @60 dB Quieting: 2.2 uV (-100 dBm), A weighted
    Squelch quieting: Greater than 100 dB typical
    AM rejection: Greater than 60 dB, 4 uV to 1 Volt
    Modulation acceptance: 85 kHz
    Image and spurious rejection: 85 dB
    Third order intercept: 0 dBm
    Diversity method: SmartDiversity phased antenna combining or Ratio Diversity using both receivers for single audio channel
    FM Detector: Digital Pulse Counting Detector operating at 250 and 350 kHz
    RF spectrum analyzer: Coarse and fine scanning modes for RF spectrum site survey
    Antenna inputs: 50 Ohm; SMA female connectors
    Audio output connectors: Interchangeable D connector adapters for camera slot interfaces, Dual TA3 male (mini XLR) balanced output adapter, Balanced output adapter with fixed cables
    Front panel audio output (5P model): Control panel TA5M with two balanced outputs
    Audio output level: Adjustable -50 to +5 dBu in 1 dB steps; unbalanced output is 6 dB lower
    Audio channel crosstalk: -80 dB or better
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