Listen Technologies LR-400, LR-300 user manual LR-500 Operation Instructions

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LR-500 Operation

LR-500 Operation Instructions

Make Sure the Unit is On

Rotate the volume knob counterclockwise with an earphone or headset connected to the unit. Listen receivers use the cable of the earphone or headset as a receiving antenna.

Be careful when turning the unit on - if you turn the knob too far you might get too much vol- ume in your earphone!

Select a Channel

Select the channel to match the transmission channel by pressing the UP and DOWN buttons on the receiver.

At 72MHz:

72MHz receivers operate on 17 wide band channels and 40 narrow band channels. Channels represented by letters on the display (i.e. A) are wideband channels ; channels represented by numbers are narrowband channels.

At 216MHz:

216MHz receivers operate on 19 wide band channels and 38 narrow band channels. Channel numbers starting with a “2” are wide band; channels beginning with a “1” or “3” are narrow band channels.

Refer to the Frequency Compatibility Tables (pages 60-63) for specific frequencies and com- patibility with other manufacturers.

Test the audio

If a transmitter is broadcasting on that channel, you will be able to hear the audio. If the sig- nal is too weak, the audio will be muted (squelched).

NOTE: Listen recommends the use of wide band transmitters.

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Contents User’s Manual Welcome to Listen Receivers Table of Contents This page intentionally left blank LR-500 Programmable Display Receiver LR-500 Package Contents Listen Part Number Optional AccessoriesLR-500 Table of Contents LR-500 Specifications Architectural SpecificationsLR-500 Specifications Quick Reference LR-500 Front 5mm Input Jack Listen earpiece or headset connects hereQuick Reference LR-500 Inside Access Door LR-500 Top of UnitLR-500 Battery Indicator Quick Reference LR-500 Look & Listen DisplayLR-500 Setup Instructions Open the front access doorSelect Battery Type Remove the productSet SQ switch Place Batteries in UnitConnect an Earphone or Headset Turn the Unit OnSelect ChannelsLCD display will Set SquelchLR-500 Operation Instructions Find an audio transmission using Seek Adjust the volume controlTo Lock into Only One Channel Is the Channel Locked on My Receiver?Enter the Program mode LR-500Programming InstructionsLocking Out Unwanted Channels Use the UP and Down keys to select channelsLR-500 Squelch SquelchSquelch Programming Instructions Squelch ProgrammingLR-500 Charging Batteries LR-500 ChargingLR-500 Charging Batteries LR-500 Wall Transformer Operation This page intentionally left blank User’s Manual LR-400 Package Contents Listen Part Number LR-400 Table of Contents LR-400 Specifications Specification LR-400-072 LR-400-216LR-400 Specifications Quick Reference LR-400 Front LR-400 Top of UnitQuick Reference LR-400 Inside Access Door Battery Select SwitchLR-400 Battery Indicator Quick Reference LR-400 Look & Listen DisplayLR-400 Setup Instructions Set SQ switch Select Channels See pages 36 and 37 for squelch and programming informationLR-400 Operation Instructions Find an audio transmission using Seek LR-400 Squelch Squelch Programming Instructions LR-400 Charging Batteries LR-400LR-400 Charging Batteries LR-400 Wall Transformer Operation User’s Manual LR-300 Package Contents Listen Part Number LR-300 Table of Contents LR-300 Specifications SpecificationsLR-300 Specifications Quick Reference LR-300 Front Quick Reference LR-300 Inside Access Door LR-300 Top of Unit LR-300 Setup Instructions Place Batteries in Unit LR-300 Operation Instructions LR-300 Operation & Squelch LR-300 Charging Batteries LR-300LR-300 Charging Batteries LR-300 Wall Transformer Operation Supplementary Information Channel Selection Channel Selection Listen SQ SQ SummaryRF Reception Maximization Strategies 72MHz Compatibility Chart Narrowband 216MHz Compatibility Chart Compatibility Chart Receiver Troubleshooting LR-300, LR-400, LR-500 Receiver has no powerThere is no audio Audio is distortedReceiver Troubleshooting Cannot pick up the signal on the receiverThere is not sufficient range Users keep changing channelsMy batteries are not charging Want to run the unit from a wall transformerCompliance Notice FCC Statement Warranty Optional Accessories Earphone Options Optional Accessories Connector Options Professional Camcorder CablePage
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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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