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LT-803-072 Stationary 3-Channel
FM Transmitter (72 MHz)
Conguration
LT-803-072-01*
LT-803-072-02*
LT-803-072-03*
The LT-803-072 Stationary 3-Channel FM Transmitter is a solution for assistive listening where simplicity and cost are important. s.
The transmitter offers universal inputs ensuring your ability to interface with any audio source i.e. mixer, microphone, IPod, or CD.
The signature Look & Listen LCD shows channel, lock, and RF power. The LT-803-072 comes with a power supply (LA-207). The
LT-803-072 is included in Listen’s LP-3CV-072 Value Package for the lowest priced solution to meet your assistive listening needs.
Highlights
• Economical price – backed by Listen’s exceptional service
and support.
• One step digital tuning – easy to get the install done
quickly - no technical service calls are required as the
transmission won’t drift.
• Balanced/Unbalanced Inputs – you can interface with
any audio source on the market.
• Auto Processor – to condition the audio for voice/music
prior to transmission.
• VU level meter and test tone – simply makes the
installation easier to set-up.
• Reliable clear sound quality - 62 dB Signal-to-noise ratio
(SNR).
• Three (3) channels – makes it simple to install, manage
and use.
• Limited Lifetime Warranty.
• Look & Listen™ LCD shows channel, channel lock, signal
strength.
• Designed for installation – rack mountable with optional
remote antennas and rack kit make installation easy and
service reliable.
Architectural Specication
LT-803-072
The stationary FM transmitter shall be capable of
broadcasting on one of any three channels – A (72.100
MHz), E (72.900 MHz) or H (75.900 MHz). The transmitter shall
have a SNR of 62 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. The device shall
have the following audio controls: input level, mix level and
an adjustable low pass lter (contour). The device shall
have an audio processor that is capable of automatic gain
control and limiting. The Listen LT-803-072 is specied.
Requires:
LA-101 Helical Top Mounted Antenna (72MHz)
LA-106 Telescoping Top Mounted Antenna (72 MHz)
LA-116 Coaxial Dipole Remote Antenna (72MHz)
LA-122 Universal Antenna Kit (72 and 216 MHz)
LA-123 90° Helical Antenna (72 MHz)
• Many accessory options make Listen products ideal for a
wide range of applications.
• 30-day no obligation demonstrations available.
Includes:
LT-803-072 Stationary 3-Channel FM Transmitter
Power Supply
Quick Reference Card
Limited Lifetime Warranty Program Card
Listen Technologies Corporation • 14912 Heritagecrest Way • Bluffdale • Utah 84065-4818 U.S.A.
+1.801.233.8992 • +1.800.330.0891
Listen Technologies Corporation All rights reserved 51908
North America •
+1.801.233.8995
Fax
LT-803-072 Page 1
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LT-803 FM Transmitter
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LT-803-072 Product Features
1. POWER on/off on front of unit for easy access.
2. Multiple audio inputs, with input level control and dual VU meters.
3. Mix Level control sets level of mixed audio. VU meter shows the output level of your mixed audio.
4. Contour equalization cuts/boosts frequencies above 5 kHz.
5. Processing (automatic gain control and compression) can be turned on and off from the front panel.
6. LCD display shows channel selected, channel lockout, and RF power.
7. Earphone jack and volume control to check audio integrity of transmission source.
8. The test tone level adds exibility when setting up and testing your system.
9. UP/DOWN channel selection of 3 channels (A, E, H).
10. Top mount, rear mount, and remote antenna options.
11. Multiple transmitter power settings (full, ½ and ¼) with indication on LCD display.
12. In-line power supply (included) attaches here.
13. Two (2) phono connectors for a mixed output of Inputs 1 and 2.
14. Two (2) unbalanced phono audio inputs. Select either +10 dBu or -10 dBu.
15. Balanced XLR / ¼ inch audio input. Select either mic, line or mic phantom power level for input. Electret
(Condenser) microphones can be used with Input 1, mic and phantom power.
Listen Technologies Corporation • 14912 Heritagecrest Way • Bluffdale • Utah 84065-4818 U.S.A.
+1.801.233.8992 • +1.800.330.0891
Listen Technologies Corporation All rights reserved 51908
North America •
+1.801.233.8995
Fax
LT-803-072 Page 2
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v
Accessories
Antennas
LA-101 Helical Top Mounted Antenna (72MHz)
LA-106 Telescoping Top Mounted Antenna (72 MHz)
LA-116 Coaxial Dipole Remote Antenna (72MHz)
LA-122 Universal Antenna Kit (72 and 216 MHz)
LA-123 90˚ Helical Antenna (72 MHz)
LA-125 Antenna Kit for Rack Mount (72 MHz)
LA-80 2-Way RF Antenna Combiner
LA-81 4-Way RF Antenna Combiner
LA-123
LA-82 6-Way RF Antenna Combiner
Power Supply (included)
LA-207-01 12 VDC Replacement Power Supply for LT-803-072 (North America)
LA-207-02 12 VDC Replacement Power Supply for LT-803-072 (Asia, UK)
LA-207-03 12 VDC Replacement Power Supply for LT-803-072 (Euro)
LA-207
LA-127
LA-326
Cables/ Connectors
LA-112 RG-58 50 Ohm Coaxial Cable (Per ft.)
LA-113 RG-8 50 Ohm Low-Loss Coaxial Cable (Per ft.)
LA-115 RG-58 BNC Coupler
LA-127 RG-58 BNC Connector
LA-128 RG-8 BNC Connector
LA-390 RG-8/50 Ohm Preassembled Coaxial Cable (Per ft.)
LA-391 RG-58/50 Ohm Preassembled Coaxial Cable (Per ft.)
Miscellaneous
LA-304 Assistive Listening Notication Signage Kit
LA-326 Universal Rack Mounting Kit
Listen Technologies Corporation • 14912 Heritagecrest Way • Bluffdale • Utah 84065-4818 U.S.A.
+1.801.233.8992 • +1.800.330.0891
Listen Technologies Corporation All rights reserved 51908
North America •
+1.801.233.8995
Fax
LT-803-072 Page 3
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RF
Audio
Specications LT-803-072
RF Frequency Range (A) 72.100, (E) 72.900, (H) 75.900
Number of Channels 3 wide band
Frequency Accuracy +/-.005% stability 32˚ to 122˚F (0˚- 50˚C)
Transmitter Stability 50 PPM
Transmittion Range Up to 1,500 ft. (457.20 m)
Output Power 80,000uV at 3 m
Antenna Various antennas available
Antenna Connector BNC
Compliance FCC Part 15, Part 90, Industry Canada
** All system specications are wireless end-to-end
System Frequency Response 50 Hz - 15 kHz (±3 dB)
System Signal to Noise Ratio 62 dB (A-Weighted)
System Distortion <2% total harmonic distortion (THD) at 80% deviation
Audio Input 1
Audio Input 2
Audio Processing (Process) Compression can be turned on/o. Slope internally adjustable from 1:1 to 4:1. Default 2:1
Contour Cuts and boosts frequencies above 5 kHz
Combined Audio Output (Mix)
Headphone Output (monitor)
Rear panel, one (1) Female-XLR and ¼ 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 VDC.
Rear panel, two (2) Phono connectors, unbalanced, -10/+10 dBu nominal input level adjustable, +30 dBu maximum,
impedance 100k Ohms.
Input 1 and input 2, mixed output (rear panel), two (2) phono connectors, unbalanced, -10 dBu nominal output level,
+15 dBu maximum, impedance 10 ohm.
Front panel, one (1) 3.5 mm (0.14 in.) stereo connector, unbalanced, adjustable output level, +3 dBu maximum,
impedance 10 Ohm.
Controls
Indicators
Power
Physical
Front Panel Power, Test Tone on/o, Channel UP/DOWN, Input levels, Mix level, Contour, Monitor volume control
Rear Panel Input 1 Level (line, mic, mic-phantom power), Input 2 Level (-10/+10 dBu), RF Power level (low, mid, high)
Internal Adjustments Compression ratio for audio processor
Programming Process on/o. Channel lock
Input 1, Input 2, Mix Level VU Indicates Input 1, Input 2, and Mix audio levels; 10 segment LED’s (8 green, 2 red)
Processing Indicated by a green LED when on (front panel)
RF Power Indicated on the LCD (low, mid, high)
LCD Display Channel designation, lock status, RF Power Level (front panel)
Test Tone Red LED illuminates when test tone is enabled
Power Supply In-line power supply. Listen part number LA-207 (line cord is determined by each country’s AC power standards
Power Supply Input Input: 100-240 VAC, 50-60 Hz. 0.4 A
Power Supply Output Output: 12 VDC, 1.3 A, 15.6 W
Power Supply Connector Output Connector: 0.02 in. (5.0 mm) OD, 0 .01 in. (2.5 mm) ID, barrel type
Power Supply Compliance UL, CE GS, TUV, RoHS
Dimensions (H x W x D) 8.50 x 1.75 x 9.12 in. (21.6 x 4.45 x 21.16 cm)
Color Dark grey with white silk screening
Unit Weight 2.6 lbs. (1.2 kg)
Unit Weight with LA-207-03
Power Supply
Shipping Weight 6.0 lbs. (2.7 kg)
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,
3.5 lbs. (1.6 kg)
optional rack mount (LA-326)
Environmental
Temperature - Operation -10˚C (14˚F) to +40˚C (104˚F)
Temperature - Storage -20˚C (-4˚F) to +50˚C (122˚F)
Humidity 0 to 95% Relative Humidity, non condensing
Listen Technologies Corporation • 14912 Heritagecrest Way • Bluffdale • Utah 84065-4818 U.S.A.
+1.801.233.8992 • +1.800.330.0891
Listen Technologies Corporation All rights reserved 51908
North America •
+1.801.233.8995
Fax
LT-803-072 Page 4
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Frequently Asked Questions
What is the range of the LT-803-072 transmitter?
Q
Line of site up to 1,500 ft. (457.20 m) with remote antenna.
A
Does the LT-803-072 include the rack mount?
Q
No, but an LA-326 Universal Rack Mounting Kit is available for purchase. Antenna options for rack
A
mounting are also available.
Do I need a transmitter for each audio source?
Q
Yes.
A
Is there a limit to the number of LT-803-072 transmitters I can use in one room?
Q
Yes. The maximum is one.
A
How many receivers can I have on a system?
Q
As many as you want. The transmitter simply transmits a signal and you can have as many
A
receivers pick that signal up as necessary. See LR-200-072 Standard 3-Channel FM Receiver.
What is the warranty of Listen transmitters?
Q
Limited lifetime warranty. The following cases will void the warranty:
A
• Misuse, dropping, or any other noticeable cosmetic damage.
Is the LT-803-072 compatible with Listen’s other receivers (LR-300-072, LR-400-072, LR-500-072, LR-100-072, and
Q
LR-600-072)?
Yes. Remember, the LT-803-072 has only three (3) channels (A, E, H) therefore the receiver will need to
A
be tuned to one of those channels. Also, the super quiet function must be turned off on the receiver.
Listen Technologies Corporation • 14912 Heritagecrest Way • Bluffdale • Utah 84065-4818 U.S.A.
+1.801.233.8992 • +1.800.330.0891
Listen Technologies Corporation All rights reserved 51908
North America •
+1.801.233.8995
Fax
LT-803-072 Page 5
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