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Stationary 3-Channel RF Transmitter (72 MHz)

Last updated Nov 1, 2026 · 3 entries in Page history

The LT-803-072-01 is a stationary RF transmitter that broadcasts on one of three channels (A, E or H) in the 72 MHz band, with two audio inputs, an LCD and an in-line power supply. Antenna not included.

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Part number or model
LT-803-072-01
Type
Assistive listening component
Catalog number
Not assigned yet
Listen Technologies LT-803-072-01, front panel

Timeline

Dates from the sources in References

  1. August 16, 2022Supplier's Declaration of Conformity dated

Specifications

63 fields, as the sources state them

Overview

Item
LT-803-072-011
3-Channel*
*Broadcasts on one of three available channels for single channel application only*1

Configurations

Configurations
LT-803-072-01 Stationary 3-Channel RF Transmitter (72 MHz) (North America)1

Includes

Includes
One (1) LT-803-072 Stationary 3-Channel RF Transmitter (72 MHz) One (1) Power supply One (1) Quick Reference Card1

Audio

Frequency Response
50 Hz - 15 kHz (±3 dB)1
Signal-to-Noise Ratio
62 dB (A-Weighted)1
Audio Input 1
Rear panel, one (1) Female XLR and 1/4 in combo connector, balanced, 0 / -55 dBu (line/mic) nominal input level adjustable, -30 / +21 dBu (line/mic) maximum input level, impedance 20k / 1k ohm (line/mic), phantom power +12 VDC1
Audio Input 2
Rear panel, two (2) phono connectors, unbalanced, -10 / +10 dBu nominal input level adjustable, +30 dBu maximum, impedance 100k ohm1
Audio Processing
Compression can be turned on/off. Slope internally adjustable from 1:1 to 4:1. Default 2:11
Contour
Cuts and boosts frequencies above 5 kHz1
Distortion
< 2% total harmonic distortion (THD) at 80% deviation1
Audio Output
Input 1 and input 2, mixed output (rear panel), two (2) phono connectors, unbalanced, -10 dBu nominal output level, +15 dBu maximum, impedance 10 ohm1
Headphone Output
Front panel, one (1) 3.5 mm (0.14 in.) stereo connector, unbalanced, adjustable output level, +3 dBu maximum, impedance 10 ohm1

Controls

User Controls
Front Panel: Power, Test Tone on/off, Channel up/down, Input Levels, Mix Level, Contour, Monitor volume controlRear Panel: Input 1 Level, (Line, Mic, Mic-Phantom Power), Input 2 level (-10 / +10 dBu), RF power level (low, mid, high)1
Internal Adjustments
Compression ratio for audio processor1
Programming
Process on/off, channel lock1

Indicators

LCD
Channel Designation, lock status, RF power level (front panel)1
Audio Input Status LEDs
Indicates Input 1, Input 2, and Mix audio levels; 10 segment LED's (8 green, 2 red)1
Processing
Indicated by a green LED when on (front panel)1
Test Tone
Red LED illuminates when test tone is enabled1
RF Power
Indicated on the LCD (low, mid, high)1

RF

Frequency Range
(A) 72.100, (E) 72.900, (H) 75.900 (One of three available channels)1
Number of Channels
3 wide band (One of the three available channels)1
Frequency Accuracy
± .005% stability 0 to 50ºC (32 to 122º)1
Antenna Type
Various antennas available1
Transmitter Stability
50 PPM1
Transmission Range
Up to 305 m (1,000 ft.)1
Antenna Connector
BNC, 50 Ohms (Use RG-58 < 100 ft or RG-8 > 100ft)1
Output Power
80,000 uV at 3 m1

Power

Power Supply
In line power supply, Listen part number LA-207 (Line cord is determined by the each Country's AC power standards)1
Power Supply Input
100-240 VAC, 50-60 Hz, 0.4 A1
Power Supply Output
12 VDC, 1.3 A, 15.6 W1
Power Supply Connector
5.0 mm (0.02 in.) OD, 2.5 mm (0.01 in.) ID, barrel type1
Compliance
UL, CE, GS, TÜV, RoHS1

Physical

Width
21.5 cm (8.50 in.)1
Height
4.5 cm (1.75 in.)1
Depth
23 cm (9.13 in.)1
Color
Dark Grey with white silk screening1
Unit Weight with Power Supply
2.0 kg (4.5 lbs.)1
Shipping Weight
2.7 kg (6.0 lbs.)1
Rack Mounting
One (1) rack space height, 1/2 rack space wide. One (1) or two (2) transmitters can be mounted in one rack space,optional rack mount (LA-326)1
Weight
1.2 kg (2.6 lbs.)1

Environmental

Temperature - Operation
-10 ºC (14 ºF) to +40 ºC (104 ºF)1
Temperature - Storage
-20 ºC (-4 ºF) to +50 ºC (122 ºF)1
Relative Humidity
0 to 95% relative humidity, non condensing1

Compliance

RF
FCC Part 15, Part 90, Industry Canada1

FAQs

What is the range of the LT-803-072 transmitter?
Line of site up to 305 m (1,000 ft.) with remote antenna.1
Does the LT-803-072 include the rack mount?
No, but an LA-326 Universal Rack Mounting Kit is available for purchase. Antenna options for rack mounting also available.1
Is there a limit to the number of LT-803-072 transmitters I can use in one room?
Yes. The maximum is (3) three.1
Is the LT-803-072 compatible with Listen's other receivers (LR-300-072, LR-400-072, LR-500-072, LR-100-072, and LR-600-072)?
Yes. Remember, the LT-803-072 has only three (3) channels (A, E, H) therefore the receiver will need to be tuned to one of those channels. Also, the SQ (Super Quiet) function must be turned off on the receiver.1
Do I need a transmitter for each audio source?
Each audio source requires a transmitter.1
How many receivers can I have on a system?
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".1

Specifications

Specifications: System Signal to Noise Ratio (A-Weighted)
60 dB2
Specifications: Combined Audio Output (Mix)
Input 1 and Input 2 Mixed Output (Rear Panel). Two (2) phono connectors, unbalanced, -10 dBu nominal output level, +19 dBu maximum, impedance 10 ohm.2
Specifications: Headphone Output (Monitor)
Front panel. One (1) 3.5 mm stereo connector, unbalanced, adjustable output level, +7 maximum, impedance 10 Ohm.2
Specifications: Dimensions (H x W x D)
1.75 x 8.50 x 9.13 in. (4.5 x 21.5 x 23 cm)2
Specifications: Unit Weight
2.6 lbs. (5.7 kg)2
Specifications: Unit Weight with Power Supply
4.4 lbs. (2.0 kg)2
Specifications: Shipping Weight
5.0 lbs. (2.26 kg)2

Declaration of Conformity

FCC ID
OMD800-0024
SAFETY
EN 60950-1/A11:20094
EMC EMISSIONS
ANSI C63.10:2013 47 CFR PART 15: 15.203, 15.207, 15.2374

History

Supplier's Declaration of Conformity: Date
August 16, 20223

Sources: listentech.com, Stationary 3-Channel RF Transmitter page, read Nov 1, 2026 UTC; listentech.com, LT-800-072 / LT-803-072 / LT-800-216 User Manual, PDF page 5, read Nov 1, 2026 UTC; listentech.com, Declaration of Conformity for LT-800-072 and LT-803-072, read Nov 1, 2026 UTC; listentech.com, Supplier's Declaration of Conformity for LT-803-072-01, Date line, read Nov 1, 2026 UTC.

Size and weight

Inches and pounds, millimetres and kilograms

The product

WhatInches and poundsMillimetres and kilograms
DimensionsW8.50×H1.75×D9.13 inW21.5×H4.5×D23 cmW215×H45×D230 mmconverted
Weight2.6 lb1.2 kg
WeightWith power supply4.5 lb2.0 kg

The packaging

WhatInches and poundsMillimetres and kilograms
WeightShipping weight6.0 lb2.7 kg

Figures in black are the maker’s. Figures in grey are converted by the wiki (1 in = 25.4 mm, 1 lb = 0.45359237 kg).

Compare with

11 of the same family on the wiki

Compare all 4 togetherAll 12 assistive listening components →

Related

As named by the sources in References

Variations

  • LT-803-072-01bB-Stock listing of this transmitter
  • LT-803-072-01-DDante version
  • LT-803-072-P1Stationary 3-Channel RF Transmitter Package 1 (72 MHz)

In the box

  • LA-20712 VDC Power Supply, Listen part number of the included power supply

Fits this product

  • LA-101Helical Top Mounted Antenna (72 MHz), listed under Also Needed
  • LA-106Telescoping Top Mounted Antenna (72 MHz), listed under Also Needed
  • LA-116Coaxial Dipole Remote Antenna (72 MHz), listed under Also Needed
  • LA-122Universal Antenna Kit (72 and 216 MHz), listed under Also Needed
  • LA-12390 Degree Helical Antenna (72 MHz), listed under Also Needed
  • LA-125Antenna Kit for Rack Mount (72 MHz), listed under Also Needed
  • LA-326Universal Rack Mounting Kit, optional rack mount
  • LA-112-500RG-58 50 Ohm Coaxial Cable (500 ft)
  • LA-113-500RG-8 50 Ohm Low-Loss Coaxial Cable (500 ft)
  • LA-115BNC Coupler
  • LA-128RG-8 BNC Connector
  • LA-391RG-58 50 Ohm Preassembled Coaxial Cable
  • LA-390RG-8 50 Ohm Preassembled Coaxial Cable
  • LA-802-Way RF Antenna Combiner
  • LA-814-Way RF Antenna Combiner
  • LA-826-Way RF Antenna Combiner
  • LA-304Assistive Listening Notification Signage Kit

Works with

  • LR-3200-072Basic DSP RF Receiver (72 MHz), listed under Also Needed
  • LR-300-072Receiver named in the FAQs, tuned to channel A, E or H with SQ off
  • LR-400-072Receiver named in the FAQs, tuned to channel A, E or H with SQ off
  • LR-500-072Receiver named in the FAQs, tuned to channel A, E or H with SQ off
  • LR-100-072Receiver named in the FAQs, tuned to channel A, E or H with SQ off
  • LR-600-072Receiver named in the FAQs, tuned to channel A, E or H with SQ off

More from Listen Technologies

9 pages on the wiki

All 9 Listen Technologies pages →

Documents

3 linked, none copied here

References

7 sources, each with the day it was read

  1. listentech.com, Stationary 3-Channel RF Transmitter page, read Nov 1, 2026 UTC. Supports 52 specifications, the related products, the documents
  2. listentech.com, LT-800-072 / LT-803-072 / LT-800-216 User Manual, PDF page 5, read Nov 1, 2026 UTC. Supports 7 specifications, the documents
  3. listentech.com, Supplier's Declaration of Conformity for LT-803-072-01, Date line, read Nov 1, 2026 UTC. Supports 1 specification
  4. listentech.com, Declaration of Conformity for LT-800-072 and LT-803-072, read Nov 1, 2026 UTC. Supports 3 specifications
  5. listentech.com, B-Stock page, Item line, read Nov 1, 2026 UTC. Supports the related products
  6. listentech.com, Dante page, Item line, read Nov 1, 2026 UTC. Supports the related products
  7. listentech.com, Package 1 page, Item line, read Nov 1, 2026 UTC. Supports the related products

Page history

Every read and every change to this page, newest first

  1. Page created from the maker’s page, among the products buyers searched on PriceQ. Product type proposed. Descriptions written at three lengths from the specifications.Claude Opus (AI agent) · Not reviewed yet
  2. Read on listentech.com: Stationary 3-Channel RF Transmitter page.Claude Opus (AI agent) · Not reviewed yet
  3. Read on listentech.com: LT-800-072 / LT-803-072 / LT-800-216 User Manual, PDF page 5; Supplier's Declaration of Conformity for LT-803-072-01, Date line; Declaration of Conformity for LT-800-072 and LT-803-072; B-Stock page, Item line; Dante page, Item line; Package 1 page, Item line.Claude Opus (AI agent) · Not reviewed yet

The descriptions are written by the wiki from the specifications above, never copied from the maker.

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