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Portable Display RF Receiver (150 MHz)
LR-400-150

  • No available audios.


Highlights

  • Look & Listen™ LCD shows channel, battery status, channel lock and signal strength.
  • Superior audio quality – 80 dB signal-to-noise ratio (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.
  • Limited Lifetime Warranty with hassle-free support.
  • Look & Listen™ LCD shows channel, battery status, 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.
  • 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 LR-400-150 Portable Display RF Receiver is our most popular model of receiver.  This receiver is excellent for assistive listening, language interpretation, tour group or personal use – anywhere transmitted audio is need to be received. The LCD display is this receivers most desired feature – it makes it easy to view the selected channel, battery life, channel lock, and RF signal strength. It can be tuned to all frequencies available in our 150 MHz products; once a frequency is selected it can be locked to prevent tampering. The LR-400-150 offers exceptional audio quality and convenient recharging options. Whether it’s voice or music, the LR-400-150 allows everyone in the audience to have a personally enhanced audio experience. 

Note: for use in Australia

Includes

LR-400-150 Portable Display FM Receiver
Quick reference card

Architectural Specs

The FM receiver shall be capable of receiving on 32 channels.  The receiver shall have a SNR of 80 dB or greater. The receiver shall be capable of seeking for open channels and 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-400-150 is specified.

Specifications

  SpecificationsLR-400-150                                                                                                  
Audio RF Frequency Range 150.8000 MHz - 152.3500 MHz                                                                            
Number of Channels 6 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)
Antenna Uses earphone cable
Squelch Programmable in 20 steps, automatic on loss of RF signal
System Frequency Response 50 Hz - 15 kHz (±3 dB)
System Signal to Noise Ratio SQ enabled 80 dB, SQ disabled 60 dB
System Distortion <2% total harmonic distortion (THD) at 80% deviation
Output 3.5 mm (0.14 in.) connectors, unbalanced, 0 dBu nominal output level,
 16 mW maximum, impedance 32 ohm
 
Controls & Indicators User Controls Channel up/down, SEEK, volume
Set-up Controls (Battery Compartment) Alkaline/NiMH batteries, SQ enable/disable
Programming Channel lock, squelch
LED Red, illuminated when unit is on, flashes when batteries are low or to indicate charging,  flashes when locked and SEEK is pushed
Display Channel designation,battery level, battery charging,
RF signal strength and channel lock 
     
  Battery Type Two (2) AA batteries, alkaline or NiMH
Power Battery 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 Connector 0.09 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 Compliance RoHS, WEEE, UL, PSE, CE, CUL, TUV, CB
     
Physical Dimensions (H x W x D) 4.25 x 2.75 x 1.50 in. (10.8 x 7.0 x 3.8 cm)
Color Dark Grey with white silk screening
Unit Weight 3.9 oz (111 g)
Unit Weight with Batteries 5.8 oz (164 g)
Shipping Weight 6.1 oz (173 g)
Door Manually lockable (on sides), SEEK/channel select behind the door
     
Environmental Temperature - Operation 14 to 104 ºF (-10 to 40 ºC) 
Temperature - Storage (-)4 to 122 °F (-20 to 50 °C)
Humidity 0 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-400-150 be used with multiple transmitters?
    Yes. The LR-400-150 can be used with multiple transmitters, but unlike the LR-500-150, it cannot be programmed to lock out 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-400-150.
     
    How long do the batteries last on the LR-400-150 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.