Listen Technologies LA-122 user manual See Diagram J

Page 12

LA-122 Universal Antenna Kit

www.ListenTech.comR

Mount to a Metal Surface Using the Ground Plane and Shorting Plate

See Diagram J

Ground Plane

Screws from Antenna Module

 

It is often convenient to place an antenna on top of a metal equipment rack. In order for the antenna to function properly, it must be secured to the equipment rack using the Grounding Plate and Grounding Base.

The Mounting Bracket is not used in this configuration. Remove the four nuts and screws from the Antenna Module and care- fully remove it from the bracket. With a lockwasher still over each screw, put the screws through the Ground Plane. Make sure the ground side of the Antenna Mod- ule (as indicated on the module) is oriented AWAY from the Grounding Plane. Then, slide the Shorting Plate over the ground side (bottom) of the module. Replace the four nuts on the bottom of the assembly. Then, place a Hex Kep nut on the center ground post and tighten.

Secure the Ground Plane to your metal rack using sheet metal screws.

Attach the proper Monopole antenna ele- ment to the Antenna Module. Systems on 72 MHz will use the LONGER antenna; sys- tems on 216 MHz will use the SHORTER one.

Connect the supplied coaxial cable between the Antenna Module and the stationary transmitter or receiver. If you use your own coaxial cable, be sure to use cable and con- nectors rated at 50 Ohms.

Ground side of

Antenna Module

Shorting Plate

Nuts from ground side of Antenna Module

Hex Kep nut

Diagram J. A reversed Antenna Module with Ground Plane

and Shorting Plate.

Ground Plane

Shorting Plate

Sheet metal screws

Hex Kep Nut

Metal Equipment Rack

Diagram K. Mounting a Monopole on a metal surface.

LISTEN TECHNOLOGIES CORPORATION 8535 South 700 West, Suite A Sandy, Utah 84070-2515 USA Phone: +1.801.233.8992 USA Toll Free: 1.800.330.0891 Fax:+1.801.233.8995 e-mail: info@listentech.com

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Contents User’s Manual Mounting Options Table of Contents SpecificationsArchitectural Specifications Before Starting Assembly of Your Antenna Mail info@listentech.comAntenna Orientation Selecting an Antenna Location Dipole Antenna Mounting Options Mounting Inside a Wall or Ceiling Active SideMounting to a Mast or Conduit Connecting the Dipole Antenna Hex Kep nut See Diagram J Mounting a Monopole Antenna to a Metal Beam or Metal Ceiling Mounting a Monopole Antenna to a Non-Conductive SurfaceTroubleshooting LA-122 Universal Antenna Kit Warranty
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Manual 24 pages 10.71 Kb

LA-122 specifications

The Listen Technologies LA-122 is a versatile and robust assistive listening device designed to enhance audio experiences in a variety of settings. This system is particularly beneficial in environments where high-quality sound transmission is essential, such as theaters, lecture halls, museums, and places of worship. The LA-122 stands out for its innovative technology and user-friendly features, making it an excellent choice for both users and venue operators.

One of the key features of the LA-122 is its extended range. This system utilizes a 72 MHz frequency band, ensuring minimal interference from other electronic devices. This capability allows for clear and uninterrupted audio transmission, vital for contributors and audiences who rely on precise sound quality. The LA-122's transmission range can cover large areas, making it ideal for extensive venues where audiences are spread out.

The device is also designed with user comfort in mind. It includes lightweight and ergonomic headphones that are comfortable to wear for extended periods. Moreover, the LA-122 can accommodate users with hearing aids, featuring a built-in induction loop that allows for seamless integration. This feature ensures that individuals using hearing aids can receive audio directly, improving their overall listening experience.

The sleek and compact design of the LA-122 promotes convenience in terms of handling and storage. The device can be easily transported and set up, making it a favorite among event organizers and facility managers. It is also equipped with rechargeable batteries, which not only reduce operational costs but also promote environmental sustainability.

In terms of connectivity, the LA-122 can connect with various audio sources, including televisions, microphones, and sound systems. This multi-source capability provides flexibility to users, allowing different venues to customize audio experiences according to their specific needs. Furthermore, the system supports multiple receivers, enabling it to cater to large groups simultaneously.

Overall, the Listen Technologies LA-122 is an advanced and reliable assistive listening solution. Its combination of superior sound quality, user-centric design, and versatile compatibility makes it an essential tool in enhancing auditory experiences for individuals with hearing impairments. Whether in educational facilities, cultural institutions, or public events, the LA-122 ensures that everyone can engage fully with the auditory content being presented.