Lectrosonics LMB A1 Tx - Basic Belt Pack - Fixed Ant - 50 Mw - 75 MHz Bandwidth - 2 AA (470.100 - 537.575MHz)


Primary Image
  • Product Image Thumbnail 1 of 3
  • Product Image Thumbnail 2 of 3
  • Product Image Thumbnail 3 of 3
Free Shipping with $49 Minimum Order

List Price:


Our Price:


Availability: Ships Factory Direct, Typically in 3-10 Business Days
iAvailability Description Popup
  • Special Order Item: non-cancelable, non-returnable, non-refundable.

LMB A1 - Overview

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.

This versatility makes the transmitter at home in a wide variety of applications from video production to theater, stage and house of worship.

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 bands. The tuning range varies in other bands to meet applicable frequency allocations.

The LMb has several other features to help you obtain good clear audio, such as 25 or 100 kHz tuning steps, a compatibility mode to ensure analog receivers will work well with the transmitter, a microphone input allowing you to use mic or line level inputs.

In addition, the durable LMb transmitter is enclosed in machined-aluminum housing and is built with a fixed antenna. A multi-function toggle switch allows audio muting, power on/off, or talkback (when used with the SRb or Venue receivers). A LCD and membrane switch interface make the LMb transmitter easy to setup and simple to use. This transmitter operates on the A1 channel between 470.100 to 537.575 MHz.

The servo bias input accepts mic or line level signals with a wide range of gain adjustment in 1 dB steps. Accurate LED indications on the top panel and a bar graph indicator on the LCD allow precise gain adjustments to be made for the maximum signal to noise ratio and minimum distortion. The limiter in the preamp can cleanly handle signal peaks over 30 dB above full modulation, allowing the input gain to be set high enough to achieve the maximum signal to noise ratio.

Compatibility with earlier analog Lectrosonics receivers, Lectrosonics IFB receivers and some receivers from other manufacturers is provided by DSP emulation modes selected in the LCD menu.

The housing is an aluminum extrusion with machined aluminum top and control panels, finished with an ultra hard, black electroless nickel finish called ebENi.

  • Features:

    • Covers three standard frequency bands
    • Digital Hybrid Wireless for compandor-free audio
    • 50 mW RF power
    • Compatibility modes for use with analog receivers
    • 25 or 100 kHz tuning steps for up to 3072 selectable frequencies
    • Integrated multi-function switch for mute or talkback modes
    • Wide range input gain control in 1 dB steps
  • Specifications:

    • Operating Frequencies:
    • Band A1: 470.100 - 537.575
    • Band B1: 537.600 - 614.375
    • Band C1: 614.400 - 691.175
    • 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: 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
    • Frequency Response: 90 Hz to 20 kHz (+/-1dB)
    • Low frequency roll-off: –12 dB/octave; 70 Hz
    • THD: 0.2% (typical)
    • 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: Two AA; alkaline, lithium, NiMH rechargeable
    • Battery Life: Alkaline: 4.5 hours, Duracell Quantum: 7 hours, Eneloop 2400 mAH NiMH: 8 hours
    • Weight: 5 ounces (141 grams), including lithium AA batteries and wire belt clip
    • Dimensions: 3.2 x 2.4 x .8 in. (81 x 61 x 20 mm)
  • Item Includes:

    • 2 - AA Batteries
    • 1 - 26526 Wire Belt Clip (Installed on Transmitter)
  • Warranty:

    • 1 Year

LMB A1 - Required Accessories

    California Residents:
    Cancer and Reproductive Harm - www.P65Warnings.ca.gov