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

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LR-400 Operation

LR-400 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 receiversoperate 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).

Contents

Main Welcome to Listen! Receivers Table of Contents Page Page Page LR-500 Table of Contents LR-500 Specifications LR-500 Specifications Specifications Indicators Power Specification LR-500-072 LR-500-216 LR-500 Specifications LR-500 Specifications continued LR-500 Quick Reference LR-500 Front LR-500 Quick Reference LR-500 Inside Access Door LR-500 Top of Unit LR-500 Quick Reference LR-500 Look & Listen Display LR-500 Battery Indicator LR-500 Setup Instructions LR-500 Setup Instructions LR-500 Setup Instructions LR-500 Setup Instructions continued Place Batteries in Unit LR-500 Setup Instructions LR-500 Setup Instructions continued LR-500 Operation LR-500 Operation Instructions LR-500 Operation LR-500 Operation Instructions continued Find an audio transmission using SEEK Adjust the volume control To Lock into Only One Channel Is the Channel Locked on My Receiver? LR-500 LR-500 Squelch LR-500 Squelch Squelch Programming Instructions LR-500 Squelch Squelch Programming LR-500 Charging Batteries LR-500 Charging Batteries LR-500 Charging Batteries LR-500 Charging Batteries continued LR-500 Wall Transformer LR-500 Wall Transformer Operation Page Page Page LR-400 Table of Contents LR-400 Table of Contents LR-400 Specifications LR-400 Specifications Specifications LR-400 Specifications Indicators Specification LR-400-072 LR-400-216 Power Environmental LR-400 Front LR-400 Top of Unit LR-400 Quick Reference LR-400 Inside Access Door LR-400 Quick Reference LR-400 Look & Listen Display LR-400 Battery Indicator LR-400 Setup Instructions LR-400 Setup Instructions LR-400 Setup Instructions LR-400 Setup Instructions continued Place Batteries in Unit Connect an Earphone or Headset LR-400 Setup Instructions LR-400 Setup Instructions continued Turn the Unit On Select Channel(s) Set Squelch LR-400 Operation LR-400 Operation Instructions LR-400 Operation LR-400 Operation Instructions continued Find an audio transmission using SEEK Adjust the volume control To Lock into Only One Channel Is the Channel Locked on My Receiver? LR-400 Squelch LR-400 Squelch Squelch LR-400 Squelch Squelch Programming Instructions Squelch Programming LR-400 Charging Batteries LR-400 Charging Batteries LR-400 Charging Batteries LR-400 Charging Batteries continued LR-400 Wall Transformer LR-400 Wall Transformer Operation Page Page LR-300 Table of Contents LR-300 Table of Contents LR-300 Specifications 44 LR-300 Specifications Specifications Specification LR-300-072 RF Audio LR-300 Specifications LR-300 Specifications continued Page LR-300 Quick Reference LR-300 Inside Access Door LR-300 Top of Unit LR-300 Setup LR-300 Setup Instructions LR-300 Setup LR-300 Setup Instructions continued LR-300 Operation LR-300 Operation Instructions LR-300 Operation & Squelch LR-300 Operation Instructions continued LR-300 Charging Batteries LR-300 Charging Batteries LR-300 Charging Batteries LR-300 Charging Batteries continued LR-300 Wall Transformer LR-300 Wall Transformer Operation Supplementary Info Supplementary Information Channel Selection Channel Selection Channel Selection Channel Selection continued Listen SQ Listen SQ SQ Summary RF Reception Strategies RF Reception Maximization Strategies 72MHz Compatibility Chart 60 72MHz Compatibility Chart Chart continued on next page Updated 03.16.04 *Parenthesis indicate T35 and T20 narrowband. NOTE: Wideband frequencies in highlighted rows. 61 72MHz Compatibility Chart continued *Parenthesis indicate T35 and T20 narrowband. NOTE: Wideband frequencies in highlighted rows. 62 216MHz Compatibility Chart Chart continued on next page 216MHz Compatibility Chart Updated 03.16.04 *Parenthesis indicate T35 and T20 narrowband. NOTE: Wideband frequen- cies in highlighted rows. 63 216MHz Compatibility Chart 216MHz Compatibility Chart continued *Parenthesis indicate T35 and T20 narrowband. NOTE: Wideband frequen- cies in highlighted rows. Receiver Troubleshooting - LR-300, LR-400, LR-500 The receiver has no power. Receiver Troubleshooting There is no audio. The audio is distorted. Receiver Troubleshooting Receiver Troubleshooting continued Receiver Troubleshooting Page FCC Statement FCC Statement Warranty Warranty Optional Accessories Earphone Options Optional Accessories