LR-100 Stationary Receiver / Power Amplifier

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Important Things to Note Before Starting Your Installation

What is Squelch?

The LR-100 is a radio receiver that receives an RF signal from either an LT-800 or LT-700 radio transmitter. Many radio receivers, including the LR-100, include a control called “squelch” that mutes the receiver’s output signal when there is no received RF signal. Without the squelch control, a strong noise is heard at the receiver whenever it is not receiving a signal. This noise can be disturbing to listeners and if sound is turned up high enough, could damage the listen- ers’ ears.

The squelch control is a threshold adjustment, determining at what RF signal level the unit will squelch (or mute) the receiver’s output audio. When the squelch is set high, it takes more RF signal to unsquelch the receiver.

For information on setting up the LR-100’s squelch, please see page 17.

What is ListenSQTM?

We are accustomed to listening to low noise, high fidelity audio delivered to us via compact discs and other audio mediums. FM radio systems (such as used in the LR-100 are inherently noisy as compared to most sound systems. In order to reduce noise of the broadcast system, the LR-100 uses a noise reduction technology called ListenSQ™. Both the transmitter and receiver must have SQ on to achieve the desired results. You will notice on the front panel of the LR-100 (under the security plate) a switch labeled “SQ: ON/OFF”. To receive the benefits of SQ, turn this switch to the ON position. Also make sure that the transmitter also has its SQ switch turned on. If the transmitter is not capable of SQ (if you are using an older version Listen transmitter or a product from a different manufacturer), you should turn SQ OFF on the LR-100.

Coaxial Cable

The antenna for the LR-100 can be mounted directly on the unit if desired. However, you may find that the unit will provide better performance when the antenna is located elsewhere. If you plan to mount the LR-100’s antenna in a different location than on the top of the unit, you must use cable and connectors rated at 50 ohms. Although cable used for cable TV installa- tions looks similar to this cable, it won’t work with your Listen system.

If you need to run cable over a greater length than 50 feet for 216 MHz applications or greater than 100 feet for 72 MHz applications, we recommend that you use RG-8 cable rather than RG-58. It is a lower loss cable, meaning that more of your signal will reach the antenna.

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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Listen Technologies LR-100 Important Things to Note Before Starting Your Installation, What is Squelch?, Coaxial Cable
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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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