Listen Technologies LA-122 manual See Diagram J

Page 17

Monopole Antenna Mounting Options

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

See Diagram J

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.

Ground Plane

Screws from Antenna Module

The Mounting Bracket is not used in this configuration. Remove the four nuts and screws from the Antenna Module and carefully 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 Module (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 element to the Antenna Module. Systems on 72 MHz will use the LONGER antenna; systems 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 connectors 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

Setup Instructions

Shorting Plate

Ground Plane

 

Sheet metal screws

Metal Equipment Rack

Hex Kep Nut

 

Diagram K. Mounting a Monopole

on a metal surface.

13

Image 17
Contents Page Page Page Page LA-122 Table of Contents Page LA-122 Package Contents Architectural Specifications LA-122 SpecificationsCoaxial Cable Before Starting Assembly of Your AntennaAntenna Orientation Important Things to Note Before StartingChoosing the Type of Antenna to Use Selecting an Antenna LocationSee Diagram C at right See Diagram B at rightDipole Antenna Mounting Options Mount to an Electrical Box in a WallMounting Inside a Wall or Ceiling See Diagrams D and EMounting to a Mast of Conduit Connecting the Dipole Antenna Mount to a Grounded Electrical Box, Ceiling or Monopole Antenna Mounting OptionsSee Diagram J Mounting a Monopole Antenna to a Non-Conductive Surface See Diagram KSee Diagram L Cable & Connectors Accessories Optional AccessoriesTroubleshooting LA-122 TroubleshootingFCC Statement Compliance Notice & FCC StatementCompliance Notice Contacting Listen Warranty & Contacting ListenWarranty
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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.