Listen Technologies LR-400, LR-500 user manual LR-300 Specifications

Page 46

LR-300 Specifications

LR-300 Specifications

Architectural Specifications

The FM receiver shall be capable of receiving on 17 wide band channels and have a SNR of 80dB or greater. The receiver shall be capable of seeking channels. The device shall have a squelch. The device shall have an audio frequen- cy response of 63Hz to 15KHz, ± 3dB at 72MHz. The device shall incorporate a stereo headset jack that allows the user to plug in either a mono or stereo headset and listen to audio normally. The receiver shall incorporate automatic battery charging circuitry for recharging of NiMH batteries. The Listen LR-300 is specified.

Specifications

 

Specification

LR-300-072

 

RF Frequency Range

72.025 - 75.950 MHz

 

Number of Channels

17 (wide band)

 

Sensitivity

.6uV typical, 1 uV maximum for 12dB SINAD

RF

Frequency Accuracy

± .005% stability 0° to 50°C (32° to 122° F)

Antenna

Uses earphone cable

 

 

Antenna Connector

3.5mm connector

 

Squelch

Automatic on loss of RF signal

 

Compliance

FCC Part 15, Industry Canada

 

** All system specifications are wireless end-to-end

 

System Frequency Response

63Hz - 15kHz (±3dB)

 

System Signal to Noise Ratio

SQ enabled: 80dB; SQ disabled 60dB

Audio

(A-weighted)

 

 

System Distortion

<2% total harmonic distortion (THD) at 80% deviation

 

Output

3.5mm connectors, unbalanced, 0dBu nominal output level,

 

16mW maximum, impedence 32 Ohms

 

 

 

Set Up Controls

Alkaline/NiMH batteries, SQ enable/disable

Controls

User Controls

Volume, SEEK (Channel SEEK is electronically lockable)

Programming

Channel selection can be locked by holding the

 

 

SEEK button for 5 seconds.

 

 

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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 DisplaySelect Battery Type LR-500 Setup InstructionsOpen the front access door Remove the productSet SQ switch Place Batteries in UnitSelect ChannelsLCD display will Connect an Earphone or HeadsetTurn the Unit On Set SquelchLR-500 Operation Instructions To Lock into Only One Channel Find an audio transmission using SeekAdjust the volume control Is the Channel Locked on My Receiver?Locking Out Unwanted Channels Enter the Program modeLR-500Programming Instructions 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 There is no audio Receiver Troubleshooting LR-300, LR-400, LR-500Receiver has no power Audio is distortedThere is not sufficient range Receiver TroubleshootingCannot pick up the signal on the receiver 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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