Listen Technologies LT-803-072-01-D – Stationary RF Transmitter 72 MHz

Product Overview

The Listen Technologies LT-803-072-01-D is a stationary RF assistive listening transmitter operating on 72 MHz with 3 channels and Dante network audio input. Listen describes it as a wireless RF transmitter ideal for venues where belt pack or stationary receivers are in use. It is the head end of a permanent RF assistive listening installation, feeding a remote antenna that covers the seating area. 3 channels supports simultaneous language interpretation or audio description alongside the main programme feed.

Product Description

A stationary transmitter is the permanent alternative to a portable unit: rack or shelf mounted, fed from the room's audio system, and connected to an antenna positioned for coverage rather than convenience.

This unit operates on 72 MHz. Three channels means one transmitter can carry the floor language plus two interpretation feeds, which is the arrangement most conference and government venues need without stacking multiple transmitters into a rack. The Dante input places the transmitter on the audio network, so the assistive listening send is routed and level-managed with the rest of the room rather than through a separate analog path.

Antenna placement determines coverage far more than transmitter power does. Run 50 ohm coaxial cable to an antenna positioned above and central to the seating area where possible, using RG-58 coaxial cable with BNC connectors and couplers where the run is joined. Where several transmitters share an antenna, specify a 4-way or 6-way combiner rather than running parallel antennas that will interfere with each other.

Receivers are ordered separately and issued to patrons, so plan the dispensing and charging process alongside the hardware. A dispensing log book covers the record keeping, protective pouches protect circulating receivers, and the assistive listening notification signage kit covers the signposting requirement.

Key Features

• 72 MHz operation — Uses the assistive listening band suited to the venue's RF environment.
• 3 channel operation — Carries the floor language plus interpretation or audio description feeds from one unit.
• Dante network audio input — Takes the programme feed from the audio network alongside the room DSP.
• Stationary installation — Built for permanent rack or shelf mounting rather than portable use.
• Remote antenna support — Feeds a remote antenna over 50 ohm coaxial cable so coverage is positioned independently of the rack.
• Belt pack and stationary receiver compatible — Works with the receiver types a venue is likely to already hold.

Typical Applications

• Auditorium
• House of worship
• Conference room
• Boardroom
• Government space
• Training room
• Multi-purpose room
• All-hands room
• Commercial meeting space

Technical Specifications

Specifications sourced from the Listen Technologies product record. Dimensions and weight are shipping values as published by the vendor.

Frequently Asked Questions

How far will the transmitter cover?
Coverage depends on antenna placement, building structure and the local RF environment far more than on the transmitter itself. Position the antenna above and central to the seating area, and verify coverage with a receiver at the seating extremes.

Can several transmitters share one antenna?
Yes, through an RF combiner. Running parallel antennas instead will cause interference between transmitters.

What audio source should feed it?
A Dante subscription from the audio network on this variant. Non-Dante models take a line level send from a mixer auxiliary or DSP output.

Which band should I specify?
72 MHz is the established US assistive listening allocation; 216 MHz provides additional channels where 72 MHz is congested. Assess the local RF environment before committing, especially near broadcast infrastructure.

Does this include receivers?
No. This part number is the transmitter. Receivers are ordered separately and sized against the ADA receiver count derived from seating capacity.

What is required for a compliant installation?
A transmitter and antenna sized for coverage, a receiver fleet meeting the required count, signage indicating the service is available, and a dispensing process that keeps receivers charged and accounted for.

What warranty and support apply?
Warranty duration and technical support terms are set by Listen Technologies. Contact Creation Networks for current terms and pre-sales design support.