Listen Technologies LR-300, LR-500, LR-400 manual RF Reception Maximization Strategies

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RF Reception Maximization Strategies

For proper and dependable operation, Listen receivers should receive a strong and consistent signal from the originating transmitter. The following strategies should be used to maximize this signal:

a. When designing and installing your system, keep in mind that the location of both the transmitter and receivers is critical to maximizing signal strength.

b. Eliminate or minimize obstructions between the transmitter and receivers. c. Minimize the distance between the transmitter and receivers.

d. Move transmitter and receivers away from metal objects.

e. Place the transmitting antenna as high as possible (on stationary transmitters).

f.Orient both transmitting and receiving antennas vertically.

g.For 216 MHz stationary LT-800 transmitter only, consider using a gain antenna such as a Yagi type antenna or the LA-107 ground plane antenna.

h.On portable transmitters and receivers, the cable from the microphone or headset is the antenna; ensure that the cable is not coiled or laying horizontal.

CAUTION: When installing remote antennas, ensure the antenna is clear of power lines.

NOTE: If the RF signal to the 216 MHz models is too high, the audio will be distorted. This may happen

if you are within 40 feet (12m) of the LT-800-216 transmitter or within 5 feet (1.5 m) of the LT-700-216 transmitter.

Coaxial cable, connectors, and optional antenna mounting kits are available from Listen. Visit www.listentech.com or ask your dealer for details.

Information

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Contents Page Page Page Page Receivers Table of Contents Page Page Page LR-500 Table of Contents LR-500 Package Contents LR-500 Specifications Architectural SpecificationsBattery Compartment LR-500 Quick ReferenceLR-500 Setup Instructions Remove the productSelect Channels LR-500 Operation Instructions Make Sure the Unit is OnTo Lock into Only One Channel LR-500 Programming Instructions Locking Out Unwanted ChannelsLR-500 Squelch Squelch Programming InstructionsLR-500 Charging Batteries LR-500 Wall Transformer Operation Page Page Page Page LR-400 Table of Contents LR-400 Package Contents LR-400 Specifications Specification LR-400-072 LR-400-216LR-400 Quick Reference LR-400 Setup Instructions See page 29 for squelch and programming information LR-400 Operation Instructions To Lock into Only One Channel LR-400 Squelch LR-400 Charging Batteries LR-400 Wall Transformer Operation Page Page Page LR-300 Table of Contents LR-300 Package Contents LR-300 Specifications Specification LR-300-072LR-300 Quick Reference LR-300 Setup Instructions Red LED will illuminate when on Earphone/Headset jack LR-300 Operation Instructions LR-300 Charging Batteries LR-300 Wall Transformer Operation Channel Selection Listen SQ SQ SummaryRF Reception Maximization Strategies MHz Compatibility Chart Comtek Williams Gentner Telex DrakeCSI AVR Troubleshooting LR-300, LR-400, LR-500 Receivers TroubleshootingTroubleshooting Users keep changing channelsCompliance Notice and FCC Statement Compliance NoticeWarranty & Contacting Listen WarrantyOptional Accessories Earphone OptionsPage
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LR-500, LR-300, LR-400 specifications

Listen Technologies has established itself as a leader in providing innovative audio solutions that enhance communication in various environments. Among their standout products are the LR-400, LR-300, and LR-500, which are designed for assistive listening, language interpretation, and audio distribution. Each of these portable receivers offers unique features, ensuring that users have a seamless experience during presentations, events, and meetings.

The LR-400 is a versatile listening receiver that operates on a wide frequency range. It is specifically engineered for maximum clarity and disturbance-free reception. One of its primary features is the ability to connect directly to a variety of audio sources, making it compatible with numerous sound systems. This device boasts a prominent LCD display, which provides real-time information about channel selection and battery life, enhancing user accessibility. Additionally, the LR-400 supports both mono and stereo audio configurations, catering to different listening preferences and needs.

The LR-300, on the other hand, is specifically built for personal listening purposes, often utilized in classrooms, theaters, and guided tours. It is lightweight and compact, designed for ease of use and portability. One of the LR-300’s standout features is its long battery life, allowing for extended use without the need for frequent recharging. Users can easily adjust the volume for optimal sound levels, ensuring they can fully engage with the presented audio without compromising comfort. The LR-300 can also be equipped with various headphones and earphones, providing flexibility to suit individual preferences.

Finally, the LR-500 expands on the capabilities of its predecessors with advanced technology aimed at improving audiology experiences. It offers a digital communication protocol that significantly enhances audio quality while minimizing interference. The LR-500 is particularly suitable for professional settings, such as conferences and multinational events, where language interpretation is required. With multiple channel options, it allows participants to select their preferred language effortlessly. Its robust design ensures durability, making it suitable for frequent travel and usage in diverse environments.

In conclusion, the LR-400, LR-300, and LR-500 receivers from Listen Technologies exemplify the company's commitment to delivering high-quality audio solutions. Each device is equipped with advanced features and technologies that address specific user needs, whether for personal listening, language interpretation, or professional audio distribution. With their reliability and performance, these receivers enhance communication and accessibility in various settings, ensuring that every voice is heard loud and clear.
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