Listen Technologies Satellite Radio User Manual
Dear Valued Customer,
Thank you for choosing Listen! All of us at Listen are dedicated to providing
you with the highest quality products available. We take great pride in their
outstanding performance because we care that you are completely
satised. That’s why we independently certify them to the highest quality
standards and back them with a limited lifetime guarantee. We stand ready
to answer any questions you might have during installation or in the operation
of our products. Should you experience any problems whatsoever with your
Listen products, we are ready to help you in any way we can with prompt,
efcient customer care. Because at Listen, it’s all about you! And should you
have any comments on how we might improve our products or our
service, we’re here to listen.
Here’s how to reach us:
+1.801.233.8992
+1.800.330.0891
+1.801.233.8995
North America
fax
support@listentech.com
www.listentech.com
Thank you and enjoy your listening experience!
Best regards,
Russell Gentner and the Listen Team
• In the few instances where repairs were needed, 99% of all clients indicated that they were happy with
repair turn-around-times and 85% of the time, clients were without their product for less than 10 days!
• Overall client satisfaction of working with Listen was rated 4.8 out of 5.
• “ Please continue with your excellent attitude toward customer satisfaction. You guys are great!”
• “I’ve never had such good service from any company. Keep up the good work!”
• “You stand behind your product wonderfully.”
Assistive Listening • Language Interpretation • Soundeld • Tour Group • Conferencing
Value Package Table of Contents
Design Guide
FM Technology Overview 5
System Overview 6
Key Concepts in Value Package Setup 7
Alternative Options for Value Package Setup 11
Notes 13
LT-803-072 Stationary FM Transmitter
Specications 20
Block Diagram 21
Quick Reference 22
Setup Instructions 23
Operating Instructions 25
Accessories 29
Notes 30
LR-200-072 FM Receiver
Specications 36
Block Diagram 37
Quick Reference 38
Setup Instructions 39
Accessories 42
Notes 43
Design Guide
LT-803-072
Supplementary Information
Battery Charging Information 50
Frequency Chart 51
Troubleshooting 52
Frequently Asked Questions 54
Compliance, Warranty and Contact Information 55
Notes 57
LR-200-072
Supplementary
Value Package Design Guide Table of Contents
FM Technology Overview 5
System Overview 6
Key Concepts in Value Package Setup 7
Alternative Options for Value Package Setup 11
Notes 13
Value Package Contents
• (1) LT-803-072 Stationary 3-Channel FM Transmitter
• (4) LR-200-072 Standard 3-Channel FM Receiver
• (1) LA-123 90° Helical Antenna
• (4) LA-161 Single Ear Bud
• (1) LA-304 Assistive Listening Notication Signage Kit
• (1) LA-207 12 VDC Power Supply
• (1) Installation Guide
LA-161 Single Ear Bud
Design Guide
LT-803
LT-803-072 Stationary 3-Channel FM Transmitter
12 VDC Power Supply
LA-123 90° Helical Antenna
72
STANDARD RECEIVER
LR-200-072 Standard 3-Channel FM Receiver
Thi s fa cili ty is equ ippe d wi th a
hea ring ass istan ce s yste m.
Ple ase ask for a rec eive r.
Installation Guide
LA-304 Assitive Listening
Notication Signage Kit
3
Frequency Modulation (FM) Technology Overview
Frequency modulation or (FM) is a means of transmitting audio using electromagnetic waves. This same
technology is used by local FM radio stations to broadcast music. FM signals can travel through most barriers
– walls, oors, and ceilings. The distance a signal travels has many different variables such as Radio Frequency
(RF) output power, the type and placement of the antenna, and the broadcasted frequency. Unlike infrared,
FM transmission are not secure. This enables a receiver to travel further distances from the source. This section of
the manual will help you design a system that will get the best range and least amount of interference.
Audio Mixer
72
Design Guide
Audio Source
STANDARD RECEIVER
LT-803
FM Receiver
FM Transmitter
5
System Overview
72
72
Alkaline
Battery Select
Channel Select
NiMH
Alkaline
Battery Select
Channel Select
NiMH
There are four main components to the Value Package – the transmitter, antenna, receiver and input source.
Design Guide
Input Source
Transmitter
The input source can be audio from a sound board, microphone or a personal audio source like a CD player,
MP3 player, computer, DVD, etc. Audio will be connected into the audio inputs of the Stationary Transmitter.
The LT-803-072 transmitter modulates the audio on an FM carrier and transmits the signal via an antenna.
LT-803-072 Stationary 3-Channel
FM Transmitter (72 MHz)
LT-803
Antenna
The LP-3CV-072 includes the LA-123 90° Helical Antenna. This antenna has a BNC connector and should be
mounted on the back of the LT-803-072. For further antenna options see page 11.
LA-123 90° Helical Antenna
Receivers
The LR-200-072 receiver captures the signal sent from the transmitter and outputs it into the LA-161 Single ear
bud. Listen offers a variety of receivers.
72
STANDARD RECEIVER
LR-200-072 Standard 3-Channel
FM Receiver (72 MHz)
6
Key Concepts in Value Package Setup
Input Selection
The LT-803-072 has two audio input options: Input 1 and Input 2. Input 1 is a balanced connection using either an
XLR or ¼ in. phono connector, and input 2 is two unbalanced phono connectors. Use Input 1 if you are using a
microphone or if you have a balanced connection such as a professional audio mixer (you can also use Input 1
for unbalanced connections). Use Input 2 to connect to an unbalanced audio source.
Balanced XLR or
1/4 in. phono connector
Design Guide
Unbalanced right
and left phono
connectors
Input 1: Connecting the audio source
Input 1 offers a choice of balanced XLR or ¼ in. phono connector. Plug an audio source into Input 1: move the
input select switch to the type of input source being used. Select “Line” for Line Inputs, “Mic” for dynamic
microphones or “Mic + PH Power” for condenser microphones. A balanced feed from a soundboard can also
be used with Input 1.
Input 2: Connect the audio source
Plug your unbalanced audio source into Input 2 and select the audio level switch for -10 dBu or +10 dBu to
match the audio level coming from your equipment.
7
Design Guide
Key Concepts in Value Package Setup
Using Multiple inputs
The LT-803-072 can accommodate multiple inputs simultaneously with the use of the input level
potentiometer. When multiple inputs are present, both input level lights will be activated.
LT-803
Mix Level
The mix level acts as the “master transmit” control. It will increase the transmit gain on the “mix” of the two
levels (if two levels are in use).
Input Level Knob
LT-803
Mix Level Adjustment
8
Key Concepts in Value Package Setup
Selecting Transmitting Frequencies
Use this section of the guide to choose the channel settings for the transmitter and receivers.
Find transmission channel(s)
The goal is to nd a transmission channel(s) that is free from interference. Interference comes from
transmitters and other outside FM signals.
Listen’s LT-803-072 oers 3 dierent channels to choose from
With 3 different channels to choose from, the chance of nding an interference free channel is increased.
The best way to check for interference is to turn the LR-200-072 on and listen to each channel. Transmit on the
channel that has the least amount of noise.
Testing System
Monitor Jack
The headphone jack is used to monitor the mix of input 1 & 2. You can adjust the monitor level with the volume
knob. The headphone jack is a standard 3.5 mm jack.
Design Guide
LT-803
3
Headphone
Monitoring Jack
Test Tone
Use the test tone to transmit a 400 Hz tone. This tone will allow the end user to know if the system is transmitting
properly. All receivers should be able to hear this tone if tuned to the proper channel.
LT-803
Test Tone Button
9
Key Concepts in Value Package Setup
Antenna placement (rear)
Design Guide
Rear mounted antenna
Maximizing Transmission Range
Rear mounting the LA-123 90° Helical Antenna (72 MHz) will allow the transmitter to be moved if necessary.
For proper and dependable operation, Listen receivers need to receive a strong and consistent signal from the
originating transmitter. The following strategies should be used to maximize this signal:
Transmitting antenna
When designing and installing your system, keep in mind that the location of both the transmitting and
receiving antennas is critical to maximize broadcast range. Minimize the distance and remove any obstructions
between the transmitting and receiving antennas. Keep transmitting and receiving antennas (receiver earphone
cord) away from metal or conductive objects.
RF Power switch
Position the RF Power switch on the back of the LT-803-072 to full RF Power, unless lower power is necessary.
Low, med or high RF power
10
Alternative Options for Value Package Setup
Remote antenna
The LA-122 Universal Antenna Kit (72 and 216 MHz) and the LA-116 Coaxial Dipole Remote Antenna (72 MHz)
connect to the LT-803-072 and can be placed away from the transmitter for better range. They also allow the
unit to be rack mounted with the antenna remotely using the LA-326 Universal Rack Mounting Kit. Both the
LA-122 and LA-116 come with 25’ of black coaxial cable (RG-58).
Design Guide
ATTENTION: Long cable runs can result in signal degradation due to the “loss” characteristics of the cable.
Minimize cable runs as much as possible or use “low loss” RG-8 cable.
LA-122 Universal Antenna Kit (72 and 216 MHz)
LA-116 Coaxial Dipole
Remote Antenna (72 MHz)
Receiver Options
Listen offers a variety of portable and stationary receivers. Each receiver offers different features to help further customize your FM system.
ATTENTION: The SQ “Super Quiet” function must be turned OFF for better audio quality when using the LT-803-072
contained in this Value Package.
LR-300-072
Portable Digital FM Receiver
(72 MHz)
Up
LR-100
Power
Output Level
Mute
Squelch
RF Power
Channel
Down
LR-100-072
Stationary FM Receiver/ Power Amplier
(72 MHz)
LR-400-072
Portable Display FM Receiver
(72 MHz)
Speaker
Seek
Headphone
LR-500-072
Portable Programmable Display FM Receiver
(72 MHz)
LR-600-072
Wireless FM Receiver/Speaker
(72 MHz)
11
Key Concepts in Value Package Setup
LT-803 FM Transmitter
LT-803 FM Transmitter
LT-803 FM Transmitter
LT-803 FM Transmitter
LT-803 FM Transmitter
Rack Mounting the Transmitter
Design Guide
The LT-803-072 can be rack mounted if necessary. With the use of the Listen LA-326 Universal Rack Mount Kit,
you can mount one or two transmitters to the standard 19” rack. The rack mounted unit will take 1 ru of space.
Rack Mount with dual units installed.
Rack Mount with single unit installed.
The antenna can also be in the front of the rack with the use of the LA-125 Antenna Kit for Rack Mount
(72 MHz) and the LA-326 Universal Rack Mounting Kit.
12
Rack Mount with single unit and external antenna installed.
NOTE: The antenna may need to be remote mounted using the LA-122 Remote Antenna Kit if the transmitter(s) is
rack mounted. If a rack is metal, it is not recommended to have the antenna inside. Also, the depth of the rack and
equipment inside could prevent an antenna from being placed inside.
Notes
Design Guide
13
Design Guide
Notes
14
Loading...