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  • Portable Programmable Display RF Receiver (150 MHz)

Portable Programmable Display RF Receiver (150 MHz)
LR-500-150

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Highlights

  • Programmability – Unneeded channels can be locked so this receiver will access only one or more channels of choice.
  • Access to controls through the front door gives the user the ability of quick channel changing.
  • Superior Audio Quality – 80 dB SNR, setting the industry’s sound quality standard.
  • With a choice between 32 channels, Listen products are ideal for a wide range of applications.
  • 100 % Digital – Listen receivers are digitally-tuned so transmission won’t drift; assurance that when a channel is selected, it stays on that channel.
  • Look & Listen™ LCD shows channel, battery status, programming, channel lock and signal strength.
  • Uses standard alkaline or nickel-metal hydride (NiMH) batteries.
  • Built in SmartCharge™ won’t allow batteries to overcharge. Charging circuitry is conveniently built into Listen’s receivers.
  • Limited Lifetime Warranty with hassle-free support.
  • Drop in charging contacts for any of Listen’s many charging cases or a charging plug on the side of the unit.
  • Many accessory options make Listen products ideal for a wide range of applications.

Overview

The most advanced of Listen’s portable receivers, the LR-500-150 Programmable Display Receiver can be programmed so users can only tune to desired channels. This receiver is ideal for venue applications where more than one source (transmitter) is used and one receiver is desired to tune into all sources (transmitters). The LR-500-150 is excellent for language interpretation when multiple languages are being spoken or venues where multiple tours are taking place. Its design gives the user ease of changing to the desired channels with the channel selection buttons through the door. Along with the programming abilities, the LR-500-150 gives the user clean audio reception (80 dB SNR), an LCD display, SmartCharge™, and the option to seek for open channels.

Note: for use in Australia

Includes

LR-500-150 Portable Programmable Display RF Receiver

Architectural Specs

The RF receiver shall be capable of receiving on 32 channels. The receiver shall have a SNR of 80 dB or greater. The receiver shall be programmable to electronically lock out unneeded channels. The receiver shall be capable of seeking channels locked on an active channel. The device shall have a squelch. The unit shall have an audio frequency response of 50 Hz to 15 kHz (±3 dB). 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 device shall incorporate an LCD display. The receiver shall incorporate automatic battery charging circuitry. The device shall be able to use of two (2) alkaline or NiMH batteries. The Listen LR-500-150 is specified.

Specifications

 SpecificationsLR-500-150
AudioRF Frequency Range150.8000 MHz - 152.3500 MHz
Number of Channels6 wide band, 26 narrow band
Sensitivity.6uV typical, 1 uV maximum for 12 dB sinad
Frequency Accuracy± .005% stability 32 to 122 ºF (0 to 50 ºC)
AntennaUses earphone cable
SquelchProgrammable in 20 steps, automatic on loss of RF signal
System Frequency Response50 Hz - 15 kHz (±3 dB)
System Signal to Noise RatioSQ enabled 80 dB, SQ disabled 60 dB
System Distortion<2% total harmonic distortion (THD) at 80% deviation
Output3.5 mm (0.14 in.) connectors, unbalanced, 0 dBu nominal output level,
 16 mW maximum, impedance 32 ohm
 
Controls & IndicatorsUser ControlsChannel up/down, SEEK, volume
Set-up Controls (Battery Compartment)Alkaline/NiMH batteries, SQ enable/disable
ProgrammingChannel lock, squelch, channel lock out
LEDRed, illuminated when unit is on, flashes when batteries are low or to indicate charging, flashes when locked and SEEK is pushed
DisplayChannel designation,battery level, battery charging,
RF signal strength, programming and channel lock
   
 Battery TypeTwo (2) AA batteries, alkaline or NiMH
PowerBattery Life (Listen Batteries)30 hours alkaline (LA-361), 15 hours NiMH rechargeable (LA-362)
Battery Charging (NiMH only)Fully automatic, 13 hours
Power Supply I/P 120 VAC; O/P 7.5 VDC 250 mA, drop in contact points for use with charging cases, power supply not included (LA-202)
Power Supply Connector0.09 in. (2.3 mm) OD by 0.7 mm ID, barrel type connector 7.5 VDC, center positive <250 mA, drop in contact points for use with Listen charging cases
Power Supply ComplianceRoHS, WEEE, UL, PSE, CE, CUL, TUV, CB
   
PhysicalDimensions (H x W x D)4.25 x 2.75 x 1.50 in. (10.8 x 7.0 x 3.8 cm)
ColorDark Grey with white silk screening
Unit Weight3.9 oz (111 g)
Unit Weight with Batteries5.8 oz (164 g)
Shipping Weight6.1 oz (173 g)
DoorManually Lockable (on sides). Up, down, and power buttons through door. 
   
EnvironmentalTemperature - Operation14 to 104 ºF (-10 to 40 ºC) 
Temperature - Storage(-)4 to 122 °F (-20 to 50 °C)
Humidity0 to 95% relative humidity, non-condensing
   
Specifications are subject to change without notification
 

Requirements

Used With

Accessories

Support Documents

    • FAQ

    What is the difference between the LR-400-150 and the LR-500-150?
    The LR-500-150 gives the user an opportunity to lockout unused channels and has the controls on the outside of the front door.
    Can the LR-500-150 be used with multiple transmitters?
    Yes. We recommend the LR-500-150 for use with multiple transmitters. The LR-500-150 is programmable and can be set to just those channels needed.
    How many channels can I program into the LR-500-150?
    As many as needed. The receiver has 32 channels that can be program it to have just the channels needed  to be accessed. It can be a two channel receiver, a 12 channel receiver, or keep all channels.
    How many receivers can I have in a system?
    As many as needed, the number is endless.
    What is the function of SQ?
    To reduce noise of its systems, Listen now offers a noise reduction technology called ListenSQ™. Both the transmitter and receiver must have SQ on to achieve the desired results. If the user is planning to use this product with older Listen systems or equipment not manufactured by Listen, SQ should be disabled.
     What is Squelching?
    The purpose of squelch is to mute the audio output of the receiver when the signal from the transmitter is turned off or is too weak to be received. Without squelch, radio noise would be heard in the earphone. The squelch function is can be programmed to the desired setting with the LR-500-150.
     How long do the batteries last on the LR-500-150 receiver?
    Alkaline batteries last 30 hours. NiMH rechargeable batteries last 15 hours.
     What is the warranty of Listen receivers?
    Limited lifetime warranty. The following cases will void the warranty:
    • Misuse, dropping, or any other noticeable cosmetic damage.
    • Charging alkaline batteries instead of NiMH.
    • Overheating the charging process by closing the lid on the charging case.

    Troubleshooting Guide

    My receiver won't turn ON.

    • Make sure that your batteries are installed with the correct polarity.
    • Your batteries may need to be replaced.

    I can hear some static in the audio. There is only static present.

    • The receiver is not on the correct channel. Press seek until you find the correct channel.
    • There are no transmissions in the area.
    • Make sure that the transmitter is transmitting properly.
    • The receiver is out of reception range.
    • The receiving antenna, which is the headset/earpiece cord, needs to be better oriented to pick up the signal better.

    The audio is intermittent.

    • The receiver is out of reception range.
    • The receiver is not on the correct channel. Press seek until you find the correct channel.
    • The squelch setting of the receiver needs to be set to a lower setting (Default 3). This will allow weaker signals to be heard. However, the receiver may be noisier when signals are weak.
    • The receiving antenna, which is the headset/earpiece cord, needs to be better oriented to pick up the signal better.
    • Make sure that the transmitter is transmitting properly.

    The audio sounds distorted.

    • The transmitter is being over driven. Adjust the input and mix level VU meters (front panel LED level lights) so that they are not in the red or adjust so they are barely peaking into the red. Make sure that the rear panel Input 1 and Input 2 level select switches are in the correct position.
    • The receiver is turned up all the way. Turn down the volume slightly on the receiver to avoid distortion.
    • The receiver is not on the correct channel. Press seek until you find a clean channel.
    • The receiving antenna, which is the headset/earpiece cord, needs to be better oriented to pick up the signal better.

    The audio level is very low, even at full volume

    • Adjust the input and mix level VU meters (front panel LED level lights) so that they are not in the red or adjust so they are barely peaking into the red. Make sure that the rear panel Input 1 and Input 2 level select switches are in the correct position.
    • On the transmitter, adjust the input and mix level VU meters (front panel LED level lights) so that they are not in the red or adjust so they are barely peaking into the red.
    • Your input source to the transmitter is a low level audio source. On the transmitter, the "Process" mode can be turned ON to boost the signal to an appropriate level.

    My receiver will not seek or change channels.

    • The receiver is locked. To unlock, press and hold the SEEK button for 5 seconds. The red LED on top of the unit will flash indicating the lock has been toggled and the Padlock icon will extinguish on the LCD display.
    • There are no transmissions in the area.
    • The receiver is out of reception range.

    How do I know when my batteries are low?

    • The red LED on top of the unit will begin flashing.
    • The battery icon on the LCD display will display low batteries and begin flashing when extremely low.
    • The receiver keeps turning off.

    My receiver won't charge.

    • Make sure you are using NiMH batteries.
    • Make sure the battery select switch, located in the battery compartment, is in the NiMH position.
    • Make sure that the power cord is plugged in properly.
    • If using a charging case, make sure that the receiver is properly placed in the charging pocket.

    The batteries in my receiver won't hold a charge.

    • It is time to replace the batteries. Listen recommends that the batteries be replaced every 3 years or after 500 charges.
    • Make sure that the receiver is actually receiving the charge. The red LED on top of the receiver will flash when charging.
    • Make sure that the unit is being turned off when not in use.

    How do I lock out channels?

    • Enter the program mode by holding the UP and DOWN buttons simultaneously for 5 seconds. The PGM icon will appear. Once in the program mode, scroll through the channels using the UP and Down buttons. Pressing the Seek button will toggle each channel in and out of Lockout. When a channel is locked out, L/O will be displayed on the LCD indicating that channel is locked out.

    How do I adjust squelch on my receiver? Where should I have it set?

    • Hold down the SEEK button while turning the unit ON. The receiver will enter the Squelch Mode. There are 20 available squelch settings, Default is 3. 0 is no squelch and 20 is tight squelch.

    The range of my receiver is very short.

    • The receiving antenna, which is the headset/earpiece cord, needs to be better oriented to pick up the signal better.
    • The transmitter's RF Power setting needs to be increased to Full.
    • A more efficient transmitting or receiving antenna mat be needed.