Lectrosonics LMb Digital Hybrid Wireless Beltpack Transmitter (C1: 614.400 to 691.175 MHz)

Model #LMB-C1

Lectrosonics lmb c1 1
Lectrosonics lmb c1 1
Lectrosonics lmb c1 2
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Packaging Info

Box Dimensions (LxWxH) 13.3 x 5.3 x 3.5"
Package Weight 0.95 lb

General Information

Frequency Selection Steps: Selectable 25 or 100 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 Nominal 2 mV to 300 mV, before limiting Greater than 1 V maximum, with limiting
Input Impedance 2 kOhms
Input Limiter DSP controlled, dual envelope "soft" limiter with greater than 30 dB range
Gain Control Range 44 dB, digital control
Channel C1
Modulation Indicators Dual bicolor LEDs indicate modulation of -20, -10, 0 and +10 dB referenced to full modulation LCD bar graph
Frequency Range 614.400 to 691.175 MHz

Audio Performance

THD 0.2% (typical)
SNR at Receiver Output SmartNR: Off 103.5 (no limiting) 108.0 (with limiting) Normal: 107.0 (no limiting) 111.5 (with limiting) Full: 108.5 (no limiting) 113.0 (with limiting) Note: The dual envelope "soft" limiter provides 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
Switch 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 1x Switchcraft 5-pin locking (TA5F)
Antenna Galvanized steel, flexible wire
Battery 2x AA alkaline, lithium, NiMh rechargeable
Battery Life Alkaline: 4.5 hours Duracell Quantum: 7 hours Eneloop 2400 mAH NiMH: 8 hours
Dimensions (L x W x H) 3.2 x 2.4 x .8" (81 x 61 x 20 mm)
Weight 5 oz (141 g), including lithium AA batteries and wire belt clip
Low Frequency Roll-Off -12 dB/octave, 70 Hz
Frequency Response 90 Hz to 20 kHz (+/-1 dB)
Product Highlights
  • For Broadcast, EFP and ENG Applications
  • 75 MHz Tuning Range
  • Digital Hybrid Wireless
  • 50 mW RF Power
  • Mic and Line Inputs
  • Fixed Antenna
  • LCD Backlit Screen
  • Multi-Function Switch for Mute/Talkback
  • Rugged Machined-Aluminum
In The Box
  • Lectrosonics LMb Digital Hybrid Wireless Beltpack Transmitter (C1: 614.400 to 691.175 MHz)
  • Limited 1-Year Warranty
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