Listen Technologies LT-800-072 User Manual
Stationary rf transmitter
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Summary of Contents for Listen Technologies LT-800-072
- Page 1 User Manual LT-800-072 Stationary RF Transmitter LT-803-072 Stationary RF Transmitter LT-800-216 Stationary RF Transmitter www.listentech.com...
- Page 2 Dear Valued Customer, Thank you for choosing Listen! We are dedicated to providing you with the highest quality products available and take pride in delivering outstanding performance to ensure you are completely satisfied. We independently certify each of our products to the highest quality standards. We are available to answer any questions you might have during installation or in the operation of our products.
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Page 3: Table Of Contents
Table of Contents Package Contents Specifications Architectural Specifications Specifications Block Diagram Quick Reference Setup Instructions Operating Instructions Audio Control Listen SQ™ (Super Quiet) RF Reception Maximization Strategies Coaxial Cable Channel Selection Compatibility Charts 72 MHz Frequency Compatibility Chart 216 MHz Frequency Compatibility Chart Phonak Frequency Compatibility Chart Troubleshooting Compliance Notice... -
Page 4: Package Contents
Package Contents LT-800-072 Contents (1) LT-800-072 Stationary RF Transmitter (72 MHz) (1) LA-207 12 VDC Power Supply (1) Quick Start Guide LT-800-072 LA-207 LT-803-072 Contents (1) LT-803-072 Stationary 3-Channel RF Transmitter (72 MHz) (1) LA-207 12 VDC Power Supply LT-803-072... -
Page 5: Specifications
Specifications Specifications* RF Frequency Range 72.025 - 75.950 MHz 216.025 - 216.9875 MHz Number of Channels 17 wide band, 40 narrow band 3 wide band 19 wide band, 38 narrow band +/-.005% stability 32˚ to 122˚F (0˚- 50˚C) Frequency Accuracy Transmitter Stability 50 PPM 100mW (max allowed by FCC) -
Page 6: Block Diagram
Block Diagram POWER 3.5MM Stereo CHANNEL SELECT In-Line 100-240 VAC Power Supply 50-60 Hz LA-207 HEADPHONE 0.4 A (provided) 12 VDC 1.3A Power Supply Down CPU Module Volume Listen LCD Display Backlighted MIX Level Top Mounted Compression Ratio VU Meter Antenna Stud (internal adjustment) Remote... -
Page 7: Quick Reference
Quick Reference Front Panel: Controls & Displays Top mount antenna connection: Remove rubber plug and screw Indicates antenna in place. Process Mode is active. Indicates audio input Indicates Super LCD: Shows level of Input 1 and Quiet mode is Monitor Port: Plug which channel Input 2. -
Page 8: Setup Instructions
Setup Instructions Unpack the Product Remove outer packaging and plastic cover. Inspect for physical damage. Mount in Rack (if necessary) If rack mounting the unit, install the optional rack mount kit (part LA-326) according to the instructions included with the kit, then install the LT-800/LT-803 in the rack. NOTE: If rack mounting, you will need to use a rear connection antenna. - Page 9 Setup Instructions (cont.) To Select Phonak Mode (LT-800 only): Press and hold down the channel select “up” button while powering on the unit. The LCD will display a “P” momentarily upon power up indicating that the transmitter is in the Phonak Channel Mode. The channels displayed will now match Phonak channels.
- Page 10 Setup Instructions (cont.) Set RF Power Full Set the RF POWER switch on the back of the unit power to Full, 1/2 or 1/4 (Level is indicated on the LCD display). The amount of transmitted RF power that you will need depends on your application. If you are operating multiple transmitters in the same power environment, it is best to set the transmitters...
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Page 11: Operating Instructions
Operating Instructions Power Unit On Turn power on by pressing the power button. Select a Channel Select the transmit channel by pressing the channel select UP and DOWN buttons. See Channel Selection on page 13 for more information. Channel Select UP and DOWN buttons NOTE: The LT-800 is shipped with only limited channels (Basic Mode). -
Page 12: Audio Control
Audio Control Adjust Audio Input Level Adjust the input knob counterclockwise to add gain to Input 1. This will decrease gain to Input 2. Adjust input knob clockwise to add gain to Input 2. This will decrease gain to Input 1. If you have two audio sources connected to both Input 1 and 2, adjust the level of one input using the VU meter, then adjust the output level of the other audio source. -
Page 13: Listen Sq™ (Super Quiet)
Listen SQ™ (Super Quiet) Improving Your Listening Experience People are accustomed to listening to low noise, high fidelity audio SQ Summary (delivered via CD, DVD, etc.). FM radio systems, such as those made by Listen, have more inherent noise compared to most sound systems. To •... -
Page 14: Rf Reception Maximization Strategies
RF Reception Maximization Strategies For proper and dependable operation, Listen receivers need to receive a strong and consistent signal from the originating transmitter. Note that on portable receivers the headset wire is the receiving antenna. The following strategies should be used maximize this signal: 1. -
Page 15: Channel Selection
Channel Selection It is important to choose channels that are free from interference to achieve proper operation of your Listen equipment. This process is trial Wide Band and error. Before turning on the transmitter, listen to the wide band Recommendation channels on the receivers (lettered channels at 72 MHz and channels that Listen recommends that start with a “2”... -
Page 16: Compatibility Charts
72 MHz Compatibility Chart Wideband frequencies are indicated in highlighted rows. The highlighted channels also indicated those channels available in the “basic” mode (default). All channels can be accessed when in the “expanded” channel mode (see page 7 for more information). *Parenthesis indicate T35 and T20 narrowband. -
Page 17: 216 Mhz Frequency Compatibility Chart
216 MHz Compatibility Chart Frequency Phonic Light Listen Comtek Phonak Williams Gentner Speed 216.0125 216.0250 216.0375 216.0625 216.0750 216.0875 216.1125 216.1250 216.1375 216.1625 216.1750 216.1875 216.2125 216.2250 216.2375 216.2625 216.2750 216.2875 216.3125 216.3250 216.3375 216.3625 216.3750 216.3875 216.4125 216.4250 216.4375 216.5125 216.5250 216.5375... -
Page 18: Phonak Frequency Compatibility Chart
Phonak Frequency Chart Frequency (MHz) Listen Phonak 216.012 216.025 216.037 216.062 216.075 216.088 216.113 216.125 216.137 216.162 216.175 216.188 216.213 216.225 216.238 216.262 216.275 216.287 216.312 216.325 216.338 216.363 216.375 216.387 216.412 216.425 216.438 216.512 216.525 216.537 216.562 216.575 216.588 216.613 216.625 216.637... -
Page 19: Troubleshooting
Troubleshooting Troubleshooting The LT-800/LT-803 has no power. Make sure the LA-207 power supply is connected to a power source and is connected to the jack marked “Power Input”. Make sure the POWER button is pressed in. There is no audio or the audio level is too low. Make sure that your audio source is properly connected to Input 1 and/or Input 2. - Page 20 Troubleshooting (cont.) Troubleshooting I’m using another brand of receiver - how do I tell which channel to use? Refer to Listen’s Frequency Compatibility Tables (pages 14-16). Adjust Listen’s transmitter to the same frequency as the other major brand. Since Listen products can access 57 channels, they will most likely receive on the same fixed channel or channels of other major brands.
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Page 21: Compliance Notice
Compliance Notice & FCC Statement LT-800/803 FCC Statement This equipment has been tested and found to comply with the limits for a class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. -
Page 22: Industry Canada Statement
Industry Canada Statement This radio transmitter, IC: 4011A-LT800216 has been approved by Innovation, Science and Economic Development Canada to operate with the antenna types listed below, with the maximum permissible gain indicated. Antenna types not included in this list that have a gain greater than the maximum gain indicated for any type listed are strictly prohibited for use with this device. -
Page 23: Warranty
Warranty & Contacting Listen Warranty For product-specific warranty information visit, https://www.listentech.com/support/warranty/. Listen... -
Page 24: Optional Accessories
Accessories Antenna Accessories LA-101 LA-102 LA-106 Helical Top Mounted Antenna Telescoping Top Mounted Antenna Telescoping Top Mounted Antenna (72 MHz) (216 MHz) (72 MHz) LA-123 LA-107 LA-122 Ground Plane Remote Antenna 90˚ Helical Antenna Universal Antenna Kit (216 MHz) (72 MHz) The single solution for all of your indoor remote antenna needs. - Page 25 LISTEN TECHNOLOGIES 14912 Heritage Crest Way, Bluffdale, Utah 84065-4818 USA Phone: +1.801.233.8992 | Toll-Free: 1.800.330.0891 | www.listentech.com Copyright © 1998 - 2023 Listen Technologies Corporation®. All rights reserved. 20231115.
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