User’s Manual LT-800 Stationary Transmitter Don’t miss a single sound. Listen. Listen Technologies Corporation 8535 South 700 West, Suite A Sandy, Utah 84070-2515 U.S.A. Telephone: 1.801.233.8992 Toll Free (North America): 1.800.330.0891 Fax: 1.801.233.8995 E-mail: info@ListenTech.
Welcome to Listen! Dear Valued Customer, Thank you for choosing Listen! All of us at Listen are dedicated to providing you the highest quality products and prompt, efficient customer care. Our products are manufactured in an ISO-9000 factory that has been independently certified to the highest quality standards. We stand ready to answer any questions you might have during installation or in the operation of our products.
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Quick Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Setup Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications Specifications Architectural Specifications The stationary FM transmitter shall be capable of broadcasting on 57 channels. The transmitter shall have a SNR of 80dB or greater. The output power shall be adjustable to quarter, half or full. Channel tuning shall be capable of being locked. The device shall broadcast on both wide and narrow band channels. The device shall have an audio frequency response of 63 Hz to 15k Hz, ± 3dB at 72 MHz, or of 63 Hz to 10k Hz, ± 3dB at 216 MHz.
Block Diagram LT-800 Block Diagram POWER On Off Red LED 115VAC6 0 Hz 3.
Quick Reference Quick Reference LT-800 Front Panel: Controls & Displays Top mount antenna connection: Remove rubber plug and screw antenna in place Indicates Process Mode is active Adjust audio input levels of Input 1 and Input 2 here.
Setup LT-800 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 in the rack. Connect Power Plug the power supply into the power connector on the back panel, then plug the power supply into an outlet.
Setup LT-800 Setup Instructions continued Set SQ (Super Quiet) and Process Features Your transmitter is shipped to you with SQ (super quiet) enabled and Process disabled. For a detailed description of these features and when to use them, please refer to page 9. To Disable or Enable SQ and Process Features: With the unit on press and hold the channel select "Down" button for 8 seconds. The program (PGM) icon will appear on the LCD.
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 11 for more information. Channel Select UP and DOWN buttons NOTE: The LT-800 is shipped with only limited channels (Basic Mode). To select from all channels (Expanded Mode) refer to page 5.
LT-800 Compatibility LT-800 Compatibility with Other Manufacturers If you are using another manufacturers’ receivers with the LT-800, determine the frequency of their receivers then refer to Listen’s Frequency Compatibility Tables (pages 12-14) to find the LT-800 channel that corresponds with the receiver’s frequency. We recommend verifying corresponding channel designations on these tables to ensure compatibility and provide the best possible reception.
Listen SQ™/Modes Listen SQ™ (Super Quiet) - Improving Your Listening Experience People are accustomed to listening to low noise, high fidelity audio (delivered via CD, DVD, etc.). FM radio systems, such as those made by Listen, have more inherent noise compared to most sound systems. To minimize noise, Listen uses a noise reduction technology called ListenSQ™. Both the transmitter and receiver must have the SQ feature enabled to achieve the desired results.
RF Reception/Coaxial Cable 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. 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. 2.
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 and error. Before turning on the transmitter, listen to the wide band channels on the receivers (lettered channels at 72 MHz and channels that start with a “2” for 216 MHz when using a Listen receiver). Listen to the audio through the headphone or via the speaker and choose a channel with the least amount of interference.
72 MHz Compatibility Chart 72 MHz Compatibility Chart p Frequency MHz 72.0250 72.0500 72.0750 72.1000 72.1250 72.1500 72.1750 72.2000 72.2250 72.2500 72.2750 72.3000 72.3250 72.3500 72.3750 72.4000 72.4250 72.4500 72.4750 72.5000 72.5250 72.5500 72.5750 72.6000 72.6250 72.6500 72.6750 72.7000 72.7250 72.7500 72.7750 72.8000 72.8250 72.8500 72.8750 72.9000 72.9250 72.9500 72.9750 74.6250 74.6500 74.6750 74.7000 74.7250 74.7500 74.7750 75.2250 75.2500 75.2750 75.3000 75.3250 75.3500 75.3750 75.4000 75.
216 MHz Compatibility Chart 216 MHz Compatibility Chart Frequency MHz 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 216.5625 216.5750 216.5875 216.6125 216.6250 216.6375 216.6625 216.6750 216.6875 216.7125 216.7250 216.7375 216.7625 216.7750 216.7875 216.8125 216.8250 216.8375 216.
Phonak Compatibility Chart Phonak Frequency Chart Frequency MHz 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 216.5625 216.5750 216.5875 216.6125 216.6250 216.6375 216.6625 216.6750 216.6875 216.7125 216.7250 216.7375 216.7625 216.7750 216.7875 216.8125 216.8250 216.8375 216.8625 216.
Troubleshooting LT-800 Troubleshooting The LT-800 has no power Make sure the LA-201 power transformer 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. The Input 1 or Input 2 switches must be in the correct position for the appropriate input level.
LT-800 Troubleshooting LT-800 Troubleshooting I’m using another brand of receiver - how do I tell which channel to use Refer to Listen’s Frequency Compatibility Tables (pages 12-13). 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. If you are using another brand of receiver, make sure you have turned off the SQ feature on the Listen product(s).
Compliance/FCC Compliance Notice This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) These devices may not cause harmful interference, and (2) these devices must accept any interference received, including interference that may cause undesirable operation. Listen’s LT-800 Transmitter (216 MHz only) Listen’s LT-800 transmitter is authorized by rule under the Low Power Radio Service (47 C.F.R.
Warranty/Contact Warranty Listen Technologies Corporation (Listen®) warrants the LT-800 Stationary Transmitter to be free from defects in workmanship and material under normal use and conditions for the useful lifetime of the product from date of purchase. This warranty is only available to the original end purchaser of the product and cannot be transferred. Warranty is only valid if warranty card has been returned within 90 days of purchase.
Optional Accessories Optional Accessories Antenna Options Telescoping (Top Mount) LA-106 for 72 MHz or LA-102 for 216 MHz 72 MHz Helical (Top Mount) LA-101 for 72 MHz LA-122 Universal Antenna Kit The single solution for all of your indoor remote antenna needs. Includes: 72 and 216 MHz components; flexible and rigid dipoles and monopole radials; hardware for multiple mounting configurations; and 25 feet (7.6m) of RG-58 coax cable.
Optional Accessories Optional Accessories continued Cable & Connectors Options RG-58 Coaxial Cable LA-112 Installation of BNC Connectors BNC Connector for RG-58 BNC Connector for RG-8 LA-114 LA-127 LA-128 RG-8 Coaxial Cable LA-113 available by the foot Microphone Options LA-268 LA-261 Lapel Over-the-Head Over-the-Ear Noise Cancelling LA-261 LA-262 LA-268 LA-270 Hand Held Collar Conference LA-274 LA-276 LA-277 Behind-thehead Phono Converter LA-278 LA-280 NOTE: To use Listen mic
Listen Technologies Corporation 8535 South 700 West, Suite A Sandy, Utah 84070-2515 U.S.A. Telephone: 1.801.233.8992 Toll Free (North America): 1.800.330.0891 Fax: 1.801.233.8995 E-mail: info@ListenTech.