Lectrosonics L Series LR / LMb Wireless System

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The Lectrosonics L Series (L for "Large Bandwidth") is the latest successor to the line of economical beltpack transmitters designed for applications including theater, house of worship, TV, ENG, video and film production. The L Series product group consists of the LMb and LT Beltpack Transmitters, and the LR Ultra-Compact Receiver. Each component is available for purchase separately, or if you prefer complete kits, they come available in the LR / LMb or LR / LT options. Kits include all the main accessories for camera-mount use. Please select frequencies when ordering.

Lectrosonics LR / LMb Wireless System Includes:

• (1) LR Ultra-Compact Receiver (Frequency bands A1 or B1)
• (1) LMb Transmitter (Frequency bands A1 or B1)
• (1) M152/5P Lavalier
• (1) LRSHOE Camera Shoe Mount for LR Receiver
• (1) MCSRXLR Cable, TA3F to XLRM
• (1) MCLRTRS Cable, TA3F to 1/8" TRS
• (1) CCMINI Zippered Pouch

CONSUMER ALERT: This particular wireless microphone device operates in portions of the 617-652 MHz or 663-698 MHz frequencies. Beginning in 2017, these frequencies are being transitioned by the Federal Communications Commission (FCC) to the 600 MHz service to meet increasing demand for wireless broadband services. Users of this device must cease operating on these frequencies no later than July 13, 2020. In addition, users of this device may be required to cease operations earlier than that date if their operations could cause harmful interference to a 600 MHz service licensee’s wireless operations on these frequencies. For more information, visit the FCC's wireless microphone website or call the FCC at 1-888-CALL-FCC (TTY: 1-888-TELL-FCC).

• LR Receiver:
  • Operating Frequencies (MHz):
    • Block A1: 470.1 to 537.575
    • Block B1: 537.6 to 614.375
  • Frequency Adjustment Range: 25.5 MHz in 100 kHz steps
  • Channel Separation: 100 kHz
  • Receiver Type: Dual conversion, superheterodyne
  • IF Frequencies: Ch.1: 243.950 MHz and 250.000 kHz
  • Frequency Stability: ± 0.001 %
  • Front End Bandwidth: 17 to 20 MHz @ -3 dB tracking (varies across range)
  • Sensitivity, 20 dB SINAD: 1 uV (-107 dBm)
  • Squelch Quieting: > 100 dB typical
  • AM rejection: > 60 dB, 4 uV to 1 Volt
  • Modulation Acceptance: ± 85 kHz
  • Image & Spurious Rejection: 85 dB
  • Third Order Intercept: 0 dBm
  • Diversity Method: SmartDiversity™ phased antenna combining or Ratio Diversity using both receivers for a 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: Two flexible steel removable whips
  • Audio Output Connector: TA3 male (mini XLR) balanced output
  • Front Panel Audio Output: 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
  • Front Panel Controls/Indicators:
    • Sealed panel with membrane switches
    • LCD monitors pilot tone; antenna phase, receiver battery level; transmitter battery status; audio level, RF level
  • Transmitter Battery Level: LCD display with icon and timer readout
  • Audio Test Tone: 1 kHz, -50 dBu to +5 dBu output (bal); 1% THD
  • Transmitter Battery Type on LCD: 9V alkaline, 9V lithium, AA alkaline, AA lithium, NiMH
  • Audio Output Polarity: Selectable as normal or inverted
  • SmartNR (noise reduction): OFF, NORMAL, FULL modes (available in Digital Hybrid Wireless mode)
  • ​Overall System Audio Performance, Digital Hybrid Wireless Mode Only:
    • Frequency Response: 32 to 20 kHz ± 1 dB
    • THD: 0.3% (system) typical in 400 mode
  • Signal to Noise Ratio (dB): 95 dB or better
  • Total Harmonic Distortion: 0.2% typical
  • Input Dynamic Range: 95 dB (with full Tx limiting)
  • Battery:
    • Types: (2) AA alkaline or lithium
    • Life: Alkaline, 4 hours; Lithium, > 8 hours
  • Operating Temperature: -40° to +167° F | -40° to +75° C
  • LCD Visible Temperature Range: -13° to +167° F | -25° to +75° C
  • Dimensions (H x W x D): 3.21 x 2.45 x .74 in | 82 x 62 x 19 mm
  • Weight: 6.4 oz | 181 g, with alkaline batteries
• LMB Beltpack Transmitter:
  • Operating Frequencies (MHz):
    • Block A1: 470.1 to 537.575
    • Block B1: 537.6 to 614.375
  • Frequency Selection Steps: Selectable, 100 kHz or 25 kHz
  • RF Power output: 50 mW
  • Pilot Tone: 25 to 32 kHz; 5 kHz deviation (Digital Hybrid mode)
  • Frequency Stability: ± 0.002 %
  • Deviation: ± 75 kHz max. (Digital Hybrid mode)
  • Spurious Radiation: 60 dB below carrier
  • Equivalent Input Noise: -120 dBV (A-weighted)
  • Input Level:
    • Mic: Nominal 2 mV to 300 mV, before limiting. Greater than 1V maximum, with limiting.
    • Instrument: 1M Ω high level
  • Input Impedance: 2K Ω
  • Input Limiter: DSP controlled, dual envelope "soft" limiter with greater than 30 dB range
  • Gain Control Range: 44 dB; digital control
  • Modulation Indicators:
    • Dual bicolor LEDs indicate modulation of -20, -10, 0 and +10 dB referenced to full modulation
    • LCD bar graph
  • ​Audio Performance, Digital Hybrid Wireless Mode Only:
    • Frequency Response: 90 to 20 kHz ± 1 dB
    • Low Frequency Roll-Off: -12 db/octave; 70 Hz
    • THD: 0.2% (typical)
  • Signal to Noise Ratio @ Receiver Output:

    SmartNR	No Limiting	With Limiting
    OFF	103.5	108
    NORMAL	107	111.5
    FULL	108.5	113

    ^{Note: The dual envelope "soft" limiter provides exceptionally good handling of transients using variable attack and release time constants. Once activated, the limiter compresses 30+ dB of transmitter input range into 4.5 dB of receiver output range, thus reducing the measured figure for SNR without limiting by 4.5 dB.}
  • Controls:
    • Top panel slide switch; programmable as power, mute, talkback or no (off) function
    • Side panel membrane switches with LCD interface for power on/off and all setup and configuration controls
  • Audio Input Jack: Switchcraft 5-pin locking (TA5F)
  • Antenna: Galvanized steel, flexible wire
  • Battery:
    • Types: (2) AA alkaline, lithium, NiMH rechargeable
    • Life: Alkaline, 4.5 hours; Duracell Quantum, 7 hours; Eneloop 2400 mAH NiMH, 8 hours
  • Emission Designator: 180KF3E
  • Dimensions (H x W x D): 3.2 x 2.4 x .8 in | 81 x 61 x 20 mm
  • Weight: 5.0 oz | 141 g, with AA lithium batteries and wire belt clip