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Listen Technologies LR-500-072 LR-500 Portable Programmable Display FM Receiver (72 MHz)
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LR-500 Portable Programmable Display FM Receiver (72 MHz)

Listen Technologies
Item #: LR-500-072
Retail: $209.00 Our Price: $176.61
You Save: $32.39 (15.5%)

    One of Listen's most sophisticated receivers, the LR-500 Programmable Display Receiver offers the signature Look&ListenTM LCD Display that shows programming status, channel, lock, battery level, and RF signal strength. Channel selector buttons are easily accessible on the front of the unit. It has channel SEEK capability and is compatible with mono or stereo headsets. It takes AA batteries (alkaline or NiMH rechargeable). SmartChargeTM capabilities prevent overcharging. It's easy to use, easy to program.

    Please Note: Does not include batteries or earphone/headphone

    architectural specifications
    LR-500-072/216
    The FM receiver shall be capable of receiving on 57 wide and narrow band 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. The device shall have a squelch. The device shall have an audio frequency response of 50 Hz to 15 KHz, � 3 dB at 72 MHz and 50 - 10 kHz (�3dB) at 216 MHz. 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 that indicates channel, battery level, low battery, battery charging, RF signal strength and channel lock status. The receiver shall incorporate automatic battery charging circuitry for recharging of NiMH batteries. The device shall have a switch able option for the use of (2) alkaline or (2) NiMH batteries. The Listen LR-500-072 or LR-500-216 is specified.

    Specification
    LR-500-072
    LR-500-216
    RF RF Frequency Range
    72.025 - 75.950 MHz
    216.0125 - 216.9875 MHz
    Number of Channels
    17 wide band, 40 narrow band
    19 wide band, 38 narrow band
    Sensitivity
    .6uV typical, 1 uV maximum for 12 dB sinad
    Frequency Accuracy
    � .005% stability 32 to 122� (0 to 50�C)
    Antenna
    Uses earphone cable
    Squelch
    Programmable in 20 steps, automatic on loss of RF signal
    Compliance
    FCC Part 15, Industry Canada
    FCC Part 90, Industry Canada
    Audio
    ** All system specifications are wireless end-to-end
    System Frequency Response
    50 Hz - 15 kHz (�3dB) 72 MHz
    50 - 10 kHz (�3dB) 216 MHz
    System Signal to Noise Ratio
    SQ enabled: 80dB; SQ disabled 60dB
    System Distortion
    <2% total harmonic distortion (THD) at 80% deviation
    Output
    3.5mm connectors, unbalanced, 0dBu nominal output level, 16mW maximum, impedance 32 Ohms
    Controls User Controls
    Channel up/down, SEEK, volume
    Set-up Controls (battery compartment)
    Alkaline/NiMH batteries, SQ enable/disable
    Programming
    Channel lock, squelch, Channel Lock Out
    Indicators 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, lock status, signal strength indication, Programming
    Power Battery Type
    Two AA batteries, alkaline or NiMH
    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 120VAC; O/P 7.5VDC 250 mA; Drop in contact points for use with charging cases. Power supply not included (LA-202)
    Power Supply Connector
    2.3mm OD by 0.7mm ID, barrel type connector 7.5 VDC, center positive <250mA. Drop in contact points for use with Listen charging cases
    Power Supply Compliance
    RoHS, WEEE, UL, PSE, CE, CUL, TUV, CB compliant
    Physical Dimensions (H x W x D)
    3.00 x 1.00 x 5.00 in. (7.6 x 2.5 x 13.0 cm)
    Color
    Dark Grey with white silk screening
    Unit Weight
    3.9 oz (111g)
    Unit Weight with batteries
    5.8 oz (164g)
    Shipping Weight
    1.0 lbs. (0.45kg)
    Door
    Manually Lockable. Up, down, and power buttons through door. Other controls behind door (see controls)
    Environmental Temperature - Operation
    14 to 104� F (-10 to 40� C)
    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



    FAQs


    Q. What is the difference between the LR-400 and the LR-500?
    A. The LR-500 gives the user an opportunity to lockout unused channels.

    Q. Can the LR-500 be used with multiple transmitters?
    A. Yes. We recommend the LR-500 for use with multiple transmitters. The LR-500 is programmable and can be set to just those channels you need.

    Q. How many channels can I program into the LR-500?
    A. 1 to 57 (17 channels with 863 MHz). The receiver has 57 (17 channels with 863 MHz) channels and you can program it to have just the channels you want to access. It can be a two channel receiver, a 12 channel receiver, or keep all channels.

    Q. How many receivers can I have in a system?
    A. As many as you need, the number is endless.

    Q. What is the function of SQ?
    A. To reduce noise of its systems, Listen now offers a noise reduction technology called ListenSQ� (on 72 MHz and 216 MHZ only). Both the transmitter and receiver must have SQ on to achieve the desired results. If you are planning to use this product with older Listen systems or equipment not manufactured by Listen, you should disable SQ.

    Q. What is the warranty of Listen receivers?
    A. 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

    Q. How long do the batteries last on the LR-500 receiver?
    A. Alkaline batteries last 30 hours. NiMH rechargeable batteries last 15 hours (72 MHz and 216 MHz). With 863 MHz, Alkaline batteries last 20 hours and NiMH rechargeable batteries last 10 hours.

    LR-500 Datasheet
    Portable FM Brochure
    � LR-500 Portable Programmable Display FM Receiver
    � Owner�s manual (72 MHz & 216 MHz)

    Please Note: Does not include batteries or earphone/headphone
    � Superior Audio Quality � 80 dB (70 dB with 863 MHz) signal-to-noise ratio, setting the industry�s sound quality standard.
    � A choice between 57 channels (17 channels with 863 MHz), complete antenna and accessory options make Listen products ideal for a wide range of applications.
    � Programmability � Unneeded channels can be locked so this receiver will access only one or more channels of your choice.
    � 100 % Digital � Listen receivers are digitally-tuned so transmission won�t drift; assurance that when you select a channel, it stays on the channel.
    � Uses standard alkaline or NiMH batteries.
    � Built in SmartCharge� won�t allow batteries to overcharge. Charging circuitry is conveniently built into Listen�s receivers; never worry about unplugging a transformer at a certain time.
    � Transformer charging plug or for the ultimate convenience drop in charging contacts.
    � Limited Lifetime Warranty with hassle-free support.


    LR-500 Line Drawing


    1. An earphone jack (3.5 mm) that accepts either mono or stereo headsets. Receiver antenna is built into the earphone cord, eliminating additional wires while maximizing receiver effectiveness.
    2. Multifunction LED indicates power on, if batteries are low, if the unit is locked on a channel when SEEK is pressed and charging status.
    3. Easy on/off volume control.
    4. Look&Listen� LCD Display shows channel selection, channel lock and battery level.
    5. Seeks to find best available broadcast. Also, used to adjust squelch in 20 steps which mutes audio on loss of RF signal.
    6. When enabled, SQ provides highest audio quality available in its product category. SQ can be disabled for compatibility with other assistive listening equipment.
    7. Uses two AA batteries. Selectable to use either alkaline or Listen�s advanced NiMH Rechargeable AA Batteries. SmartCharge� incorporated into receiver makes sure each unit receives the most beneficial charge.
    8. Digitally tuned with UP, DOWN, and SEEK buttons behind manually lockable door. Electronically lock on channel by holding the SEEK button down 5 seconds to prevent tampering.
    9. Manually lockable battery compartment door.
    10. Charging plug port.
    11. Contact points for Listen�s drop in charging cases.
    12. Exclusive belt clip �loop� prevents unit from slipping off belt or strap.