Lectrosonics LMb (B1: 537.600 - 614.375 MHz, BLOCKS 21, 22, 23)
MPN #LMB-B1
The versatility of the LMb makes it at home in a wide variety of applications from video production to theater, stage and house of worship.
The LMb transmitter can be configured to operate as a "one touch" device with a single power on/off switch on the top panel, or with full access to all operational parameters using the side panel membrane switches and LCD interface. The top panel switch can also be configured to provide a mute or talkback function.
Frequencies are selectable in 100 kHz or 25 kHz steps across a maximum tuning range of 76.7 MHz. This yields a total of 3072 available frequencies across three standard frequency blocks. The tuning range varies in other blocks to meet applicable frequency allocations.
Features
Covers three standard frequency blocksDigital Hybrid Wireless for compandor-free audio50 mW RF powerCompatibility modes for use with analog receivers25 or 100 kHz tuning steps for up to 3072 selectable frequenciesIntegrated multi-function switch for mute or talkback modesWide range input gain control in 1 dB steps
Specifications
Operating Frequencies: B1 537.600 - 614.375 MHz
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: Nominal 2 mV to 300 mV, before limiting Greater than 1V maximum, with limiting.
Input impedance
Mic: 300 OhmLine: 2k Ohm
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
Controls: Top panel toggle switch; programmable as power, mute, talkback or none (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: Two AA; alkaline, lithium, NiMH rechargeable
Battery Life
Alkaline: 4.5 hoursDuracell Quantum: 7 hoursEneloop 2400 mAH NiMH: 8 hours; new batteries fully charged
Weight: 5.8 ounces (141 grams), including lithium AA batteries and wire belt clip
Dimensions: 3.2 x 2.4 x .9 in. (81 x 61 x 20 mm)
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