Listen Technologies user manual LR-100 Stationary Receiver / Power Amplifier

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LR-100 Stationary Receiver / Power Amplifier

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www.ListenTech.com

To set the squelch control:

a.Turn the transmitter OFF.

b.Listen to the receiver audio on the speaker or headphone. Turn the audio level down in the beginning.

c.Adjust the squelch adjustment clockwise until the squelch LED goes off (not illumi- nated). You will hear radio noise now. This is the audio you want to squelch (mute) when the transmitter is off.

d.Now adjust the squelch setting counter clockwise until it squelches (mutes). This is the minimum squelch setting.

e.Now turn the transmitter on. Adjust the squelch setting counter clockwise until the unit squelches. This is the maxium squelch theshold. Please note that if you are close to the transmitter, you may not be able to find the maxium squelch threshold due to the high RF signal of the transmitter.

f.Set the squelch adjustment between the maximum and minimum squelch thresholds, keeping the following in mind.

i.Minimum squelch threshold. By adjusting the unit near this threshold, you will maximize the probability the unit will NOT squelch when the transmit- ter is on. However, you also run the risk having the unit NOT squelched (and resulting radio noise coming through the system) when the transmitter is off. You may experience unsquelching of the receiver by interference as well.

ii.Maximum squelch threshold. By adjusting the unit hear this threshold, you will greatly increase the chance the unit will squelch when the transmitter is off AND you will minimize the probability that the unit will be unsquelched by interference. However, you are also increasing the chances that the signal coming from the transmitter will be squelched. Thus, if the RF signal from the transmitter dips just slightly (someone walks in front of the antenna), you will experience momentary squelching of the audio.

CAUTION: Ensure proper setting of the squelch adjustment to prevent user ear damage and unwanted radio noise. Users will find unsquelched radio noise very objectionable.

LISTEN TECHNOLOGIES CORPORATION 8535 South 700 West, Suite A Sandy, Utah 84070-2515 USA Phone: +1.801.233.8992 U.S.A. Toll Free: 1.800.330.0891 Fax: +1.801.233.8995 www.ListenTech.com

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Contents User’s Manual LR-100 Stationary Receiver / Power Amplifier Table of Contents SpecificationsLR-100 Front Panel Connections and Controls MuteLR-100 Rear Panel Connections and Controls ControlSystem Block Diagram Before Installing Your LR-100What is ListenSQTM? Important Things to Note Before Starting Your InstallationWhat is Squelch? Coaxial CableStrategies for Maximizing RF Reception with the LR-100 Installation Powering the Unit AC Power OperationBattery Operation Installation Audio Connections Output Audio Output Audio Selection SwitchLINE/MIC Switch Balanced Audio OutputUnbalanced Audio Output Auxiliary Input Speaker ConnectionInstallation Antenna Using the supplied helical antennaUsing a remote antenna Installation Remote Control Setup Understanding the LCD displayWhich channels should I use? Setup Adjustments Setup VU MeterInput Audio Levels Programming Selecting SQ on or OFFChannel Selection SquelchLR-100 Stationary Receiver / Power Amplifier Resetting After an Overload Condition Troubleshooting LR-100 Stationary Receiver / Power Amplifier Channel Selection Chart 72 MHz 216 MHz FCC Statement Warranty

LR-100 specifications

The Listen Technologies LR-100 is an advanced personal listening device designed to enhance audio experiences in various settings, including classrooms, churches, theaters, and conference rooms. With its sophisticated technology and numerous features, the LR-100 ensures that users can hear every word clearly, allowing them to participate more fully in events and activities.

One of the key features of the LR-100 is its lightweight and ergonomic design, making it comfortable for users to wear for extended periods. The device is equipped with a built-in speaker and headphone jack, enabling users to connect their preferred headphones for a more personalized audio experience. This flexibility caters to users with varying preferences, ensuring that everyone can receive the audio quality they desire.

The LR-100 utilizes cutting-edge FM technology, which provides excellent audio clarity and minimizes interference, even in crowded environments. This feature is particularly vital in settings where multiple audio signals may be present, guaranteeing that users receive a clear and focused audio feed. The LR-100 has a wide operating frequency range, ensuring compatibility with various transmitters and audio sources.

The device operates on a robust battery system that delivers extended life for users in need of longer listening sessions. The LR-100 can easily be recharged via a USB port, offering convenience and reducing the need for disposable batteries. This eco-friendly option aligns with sustainability efforts while providing reliable performance for prolonged use.

A standout characteristic of the LR-100 is its adjustable volume control, allowing users to set their preferred listening level. Furthermore, the device comes with a variety of accessories, including adjustable neck loops and earphones, to accommodate different listening preferences and needs.

The LR-100 is also designed with durability in mind, featuring a rugged casing that can withstand the rigors of daily use. This resilience is particularly important for environments where devices may be handled frequently, ensuring longevity and sustained performance over time.

In conclusion, the Listen Technologies LR-100 is an exceptional personal listening device that combines convenience, performance, and adaptability. Its state-of-the-art features and technologies make it an indispensable tool for enhancing audio experiences in a range of environments, allowing users to engage more fully and enjoy every moment.
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