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Overview

Combining our LT-800-072 Stationary RF Transmitter with the LA-106 Telescoping Top-Mounted Antenna and LA-304 Assistive Listening Notification Signage Kit, this complete package makes it easy to get your 72 MHz system installed and available to listeners right away.

Includes

One (1) LT-800 Stationary RF Transmitter (72 MHz)
One (1) LA-207 Power Supply for LT-800
One (1) Line Cord
One (1) Quick reference card
One (1) LA-106 Telescoping Top Mounted Antenna (72 MHz)
One (1) LA-304 Assistive Listening Notification Signage Kit            

Highlights

  • Perfect start-up package for your 72 MHz RF assistive listening system
  • Includes our LT-800 transmitter, LA-106 antenna, and the LA-304 signage kit to ensure awareness of your system and compliance
  • Balanced and unbalanced audio inputs allow for use with any audio source
  • Built-in auto processor optimizes audio (voice or music) prior to transmission
  • 57 available, selectable channels
  • VU level meter and test tone for simple installation and set up
  • 30-day, no-obligation demonstration available for your venue or business
  • Backed by Listen Technologies’ limited lifetime warranty and hassle-free support
Configurations & Architectural Specs

Configurations

LT-800-072-P1 Stationary RF Transmitter Package 1 (72 MHz)

Architectural Specs

The LT-800-072-P1 Stationary RF Transmitter Package 1 (72 MHz) shall include (1) LT-800-072 Stationary RF Transmitter (72 MHz), (1) LA-106 Telescoping Top Mounted Antenna (72 MHz), and (1) LA-304 Assistive Listening Notification Signage Kit. The transmitter shall be capable of broadcasting on 57 channels with a range of up to 700 ft (213 m). The transmitter shall have an SNR of 80 dB or greater. The output power shall be adjustable to quarter, half or full. Channel tuning shall be capable of being locked. The device shall have an audio frequency response of 50 Hz to 15k Hz, ±3 dB at 72 MHz. It shall have two (2) mixing audio inputs and a mixed signal output. The device shall have the following audio controls: input level, mix level and an adjustable low pass filter (contour). The device shall have an audio processor that is capable of automatic gain control and limiting. The Listen LT-800-072-P1 is specified.

CAD file(s)

Product Specifications
Specification LT-800-072-P1

Physical

Shipping Weight 6.0 lbs. (2.7 kg)
Used With
Accessories
FAQ
Q What does the LT-800 Transmitter "contour" knob do?
A The contour knob boosts or cuts frequencies above 5kHz. It is recommended that this knob be turned counterclockwise for voice and clockwise for music.
Q What does the LT-800 Transmitter "process" feature do? When should I use it?
A The process feature is a type of Automatic Gain Control. If your input signals to the transmitter are inconsistent in level and you wish to have gain control, then this should be turned on.
Q Where should I have the input level switches positioned on the back of my transmitter?
A Depends on the level of audio being input. When using Input 1: • MIC position: For a microphone or MIC level input of -55dbu. • MIC Phantom Power: For a condenser microphone that needs a 12VDC phantom power supply at a -55dbu level input. When using Input 2: • +10dbu/SPKR position: When connecting a speaker or any other higher line level audio input. • -10dbu/Line position: When connecting a regular line level input of -10dbu
Q Can I use the LT-800 transmitter with other manufacturer's receivers?
A YES. Please refer to the frequency compatibility charts in the manual or on the website for channel conversions. When using other manufacturers products, SQ (Super Quiet) must be turned OFF.
Q What channels should I be transmitting on?
A It is recommended that wideband channels are used for best audio quality. If transmitting multiple simultaneous channels, narrowband frequencies may be required.
Q Is there a limit to the number of transmitters I can use in one room?
A Yes. The 72 MHz LT-800-072 has a maximum of (8) eight.
Q Does the LT-800 include the rack mount?
A No, but an LA-326 Universal Rack Mounting Kit is available for purchase.
Q Do I need a transmitter for each audio source?
A Each audio source requires a transmitter.
Q How many receivers can I have on a system?
A As many as you want. The transmitter simply transmits a signal and you can have as many receivers pick that signal up as necessary. It's like a radio station transmitting and the receivers are the radios tuning into the "channel".
Q What is the range of the LT-800 transmitter?
A Depends on the following:
  • The frequency of the transmitter.
  • The transmitter's location.
  • The antenna being used on the transmitter and receiver.
  • The location of the remote antenna (if applicable). In general, the higher the antenna the more range.
  • The length of coaxial cable ran to the antenna from the transmitter (if applicable). Every foot of cable creates a power loss.
  • The RF power setting on the transmitter.
  • The objects between the transmitter and receiver. All material, especially metal, will weaken the signal strength.
  • When using 72 MHz, a direct line of sight distance of 305 m (1000 ft.) from the transmitter can be achieved.
Q What type of microphones can I use with the LT-800 transmitter?
A Dynamic microphones can be used when the Input 1 level select switch is in the "MIC" position.Condenser microphones can be used when the Input 1 level select switch is in the "MIC + Phantom Power" position.
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We've been impressed by the Listen system's ease of use (and installation), as well as its flexibility. The difference between your system and what we had been using is amazing. Patrons are happy and thus, so are we.

James D. Anderson
Director of Audio, McCallum Theater
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