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Listen Technologies LT82


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Product Overview

The Listen LT-82 is the heart of a stationary IR listening system.
It takes the desired audio signal and transmits the signal via coaxial cable to one (1) or more IR radiator-emitters (LA-140).


  • LT-82 Stationary IR Transmitter
  • LA-205 30 VDC Extension/Replacement Power Supply
    for LA-140/LT-82
  • LA-89 Interconnection Coaxial Cable
  • Quick Reference Card


The LT-82 can be operated in mono or stereo on one (1)
of four (4) different carriers; up to four (4) LT-82 units may be connected to provide up to four (4) mono or stereo carriers
to the radiators and generates DC power to power up to two (2) LA-140 radiator-emitters.

Two (2) LT-82 units can be rack mounted in a single rack space using the LA-326 rack mounting kit. The LT-82 is used for government compliance (such as ADA), assistive listening, language interpretation, live theatre, houses of worship, courtrooms, secure rooms and for auditory description.


  • Secure wireless communication - ideal for applications where isolation of the signal is important
  • Up to four (4) channels mono, or four (4) channels stereo – no need to sacrifice multiple channels to achieve stereo transmissions (one LT-82 is required for each channel)
  • Transmitter can power two (2) radiator/emitters (LA-140) using CAT-5 cabling
  • Easy to specify, install and use
  • Outstanding performance -
    ensures crystal clear sound for listeners
  • Limited Lifetime Warranty


Full specifications are available under the Downloads tab above

  • Carrier Frequencies: 2.3 MHz, 2.8 MHz, 3.3 MHz, 3.8 MHz
  • Number of Channels: 4 channels. Selectable 1 channel per transmitter
    (mono or stereo)
  • Frequency Accuracy: +/- .005% stability 0 to 50 °C
  • Transmitter Stability: 50 PPM
  • RF Output: Two (2) BNC connectors, 50 mV, 50 ohm, -15 dBm
  • RF Input: One (1) BNC connector, 50 mV, 50 ohm, -15 dBm
  • Compliance: FCC Part 15, Industry Canada, CE, RoHS

Product Downloads

  • LT82 Data Sheet PDF 1.0 MB
  • LT82 Tech Notes Audio Ducking PDF 0.1 MB
  • LT82 Tech Note Airwall PDF 0.6 MB
  • LT82 Tech Note Cat 5 PDF 0.3 MB
  • LT82 Manual PDF 4.9 MB
  • LT82 Brochure PDF 0.7 MB


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*Prices are in AUD, include GST and are subject to change. Please call National Audio for pricing and availability on the LT82.