Listen Technologies 15-Person Advanced Portable RF System (72 MHz)

Listen Technologies 15-Person Advanced Portable RF System (72 MHz)

Listen Technologies 15-Person Advanced Portable RF System (72 MHz)

B&H # LILS0807201 MFR # LS-08-072-01
Listen Technologies 15-Person Advanced Portable RF System (72 MHz)

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Listen Technologies LS-08-072-01 overview

  • 1Description

The 72 MHz 15-Person Advanced Portable RF System from Listen Technologies is a complete assistive listening system designed for group applications, such as with tour guides or language interpretation. It includes one Listen Technologies Portable Display RF Transmitter, one Behind-the-Head Microphone, fifteen Portable Programmable Display RF Receivers, fifteen Ear Speakers, one 16-unit Portable RF Product Charging/Carrying Case, and thirty-two Rechargeable AA NiMH batteries.

  • LT-700 Portable Display RF Transmitter (72 MHz)

    The 72 MHz Listen Technologies LT-700 Portable Display RF Transmitter is used to wirelessly broadcast audio for a variety of portable applications. Whether its voice or music, you can broadcast your audio to everyone in the audience without having to carry a microphone or be plugged into a wall. The LT-700-072 is suitable for factory tours, outdoor events, wireless microphone applications, classrooms, training, or personal use - anywhere you need to amplify sound, but don't have (or want) an installed system. The many features of the LT-700 have made portable transmission considerably easier.

    This product is approved by the FCC for use in the US. Please note that it cannot be used in all countries. Check with your local government or specific regulation with regard to broadcast frequency in your specific country. Note: FCC rules limit the use of this product to assistive listening.

    A potent 80 dB signal-to-noise ratio
    A choice between 57 channels, with complete antenna and accessory options makes the LT-700-72 MHz suitable for a wide range of applications
    Look & Listen LCD shows channel, battery status, and programming information
    100 % Digital - Listen receivers are digitally-tuned so transmission won't drift; assurance that when you select a channel, it stays on the channel
    Transmit up to six (6) channels simultaneously
    Uses standard alkaline or NiMH batteries
    Transformer charging plug or drop in charging contacts
    Built in SmartCharge won't allow batteries to overcharge
    Charging circuitry is conveniently built into Listen's LT-700 Transmitter; never worry about unplugging a transformer at a certain time
    Mute switch
    Mic and/or line level inputs
  • LA-278 Behind-the-Head Microphone

    The LA-278 Behind-the-Head Microphone from Listen Technologies is compatible with the LT-700 Portable Transmitter. The directional microphone is designed to cancel ambient noise and fits securely over your ears and around the back of your neck. It also features an antenna for the transmitter in the microphone cord.

    Directional microphone
    Ideal for use when unobtrusive placement and high performance are critical
    Designed to cancel ambient noise
    Fits securely over ears and around the back of the neck
    The transmitter antenna is built into the microphone cord
  • Portable Programmable Display RF Receiver (72 MHz)

    The Portable Programmable Display RF Receiver from Listen Technologies is a 72 MHz receiver. It can receive up to 57 channels and has a Look & Listen LCD Display that shows programming status, channel, lock, battery level, and RF signal strength. Channel selector buttons are located 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). SmartCharge capabilities prevent overcharging.

    80 dB signal-to-noise ratio (SNR)
    57 channels
    Unneeded channels can be locked so this receiver will access only one or more channels of your choice
    Receiver is digitally-tuned so the transmission won't drift
    Uses standard alkaline or nickel-metal hydride (NiMH) batteries
    Built in SmartCharge won't allow batteries to overcharge
    Transformer charging plug
  • LA-164 Ear Speaker

    The LA-164 Ear Speaker from Listen Technologies is designed to fit easily over your ear. It's constructed of hard plastic, making it easy to clean. The earpiece can be used at venues where it can be continuously cleaned and re-used, or with hearing aids.

    Easily cleaned
    Single ear clip does not mess up hair
    Strong volume output
    The receiver's antenna is built into the headphone cord
  • LA-311-01 16-Unit Portable RF Product Charging/Carrying Case (Gray)

    The grey LA-311-01 16-Unit Portable RF Product Charging/Carrying Case from Listen Technologies is compatible with the company's LT-700, LR-200, LR-300 and LR-500 series products. It is designed with 16 separate slots for storing and charging your RF devices, as well as individual earphone slots to prevent cable tangling. A power cable connects the case to a standard electrical outlet, and the units will automatically turn off once they are fully charged. There is a large pocket for storing the power supply, headsets, and any additional accessories. Durable latches with included keys allow you to lock the case for additional security. The case can be carried using the metal handle or by using the included detachable shoulder strap.

    Sturdy case with hard foam interior and durable latches
    Stores up to 16 receivers and portable transmitters
    Large and small pocketets store earphones and other accessories
    Earphones can remain attached to receivers during storage
    Case comes with keys and can be locked for security
    Detachable nylon carrying strap
  • LA-362 Rechargeable AA NiMH Batteries (Pack of 2)

    The pack of two LA-362 Rechargeable AA NiMH Batteries from Listen Technologies are designed to be recharged many times. They can be used with the company's charging cases, belt pack devices, and LR-600 Wireless Speaker/Receiver. The batteries provide 1.2V of power and have a 2300 mA capacity.

    Can be recharged many times
    Standard size AA batteries
    Longer life then NiCad
    Package of 2
In the Box
Bundle Items
  • Limited Lifetime Warranty
  • Limited 90-Day Warranty
  • Limited Lifetime Warranty
  • Limited 1-Year Warranty
  • Set of Keys
  • Shoulder Strap
  • Power Supply
  • Limited 1-Year Warranty

Also Includes

  • Limited Lifetime Warranty
Table of Contents
  • 1Description

Listen Technologies LS-08-072-01 specs

  • LT-700 Portable Display RF Transmitter (72 MHz)
    Audio
    Frequency Response ± 3dB 50 to 15 kHz
    Signal-to-Noise Ratio SQ enabled: 80 dB; SQ disabled 60 dB
    Distortion <2% total harmonic distortion (THD) at 80% deviation
    Microphone Sensitivity Three position switch: high, middle, and low; 6 db increments
    Line Input Unbalanced, ring of 3.5 mm connector, -10 dbu nominal input level, -3 dbu maximum, impedance 10 kOhms
    Microphone Power 5 VDC Bias
    Microphone Input Unbalanced, tip of 3.5 mm connector, -45 dBu nominal input level, -30 dBu maximum, impedance 20 kOhms
    Controls/Indicators
    User Controls Power
    Mute
    Channel UP/DOWN
    Mic sensitivity
    NiMH/alkaline battery
    SQ enable/disable

    Programming:
    Channel lock out
    Channel lock
    Indicators LEDs:
    Red, illuminated when unit is on
    Flashes when batteries are low, or to indicate charging
    Flashes when muted

    LCD:
    Channel Designation
    Lock status
    Signal strength indication
    Battery life
    RF Power
    RF Specification
    Frequency Range 72.025 to 75.950 MHz
    Supported Transmitters 6
    Frequency Accuracy ± .005% stability 32 to 122ºF (0 to 50ºC)
    Transmission Stability 50 PPM
    Transmission Range From 0 to 150' (45.7 m)
    Output Power <10 mW
    Antenna Type Microphone cable
    Antenna Connector 3.5 mm
    Power
    Battery Type 2 x AA batteries, alkaline or NiMH
    Battery Life 15 hours alkaline (LA-361), 15 hours NiMH rechargeable (LA-362)
    Battery Charging Time 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 optional, not included (LA-208)
    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
    Compliance RoHS, WEEE, UL, PSE, CE, CUL, TUV, CB compliant
    RF:FCC Part 15, Industry Canada
    Safety: RoHS
    Physical and Environmental
    Temperature (Operating) 14 to 104º F (-10 to 40ºC)
    Storage Temperature -4 to 122°F (-20 to 50ºC)
    Relative Humidity 0 to 95% relative humidity, non-condensing
    Color Dark gray with white silk screening
    Door Type Manually lockable, controls accessible through doors
    Component Dimensions & Weights Dimensions(H x W x D): 5 x 3 x 1"(13.0 x 7.6 x 2.5 cm)
    Unit Weight with Batteries: 5.8 oz. (164 g)
    3.9 oz. (111 g)
    Packaging Info
    Box Dimensions (LxWxH) 6.063 x 4.331 x 2.126"
  • LA-278 Behind-the-Head Microphone
    Compatibility Listen Technologies LT-700 Portable Transmitter
    Frequency Response 300 Hz to 10 kHz
    Impedance 1 kOhm
    Phantom Power 3 VDC required
    Connections 1 x 3.5 mm Mono
    Approvals and Compliance RoHS
    Cable Length 55.0" / 139.7 cm
    Weight 2.0 oz / 56.7 g
    Packaging Info
    Box Dimensions (LxWxH) 6.221 x 6.063 x 1.654"
  • Portable Programmable Display RF Receiver (72 MHz)
    RF Specification
    RF Frequency Range 72.025 to 75.95 MHz
    Number of Channels 17 wide band, 40 narrow band
    Sensitivity 0.6 uV typical, 1 uV maximum for 12 dB SINAD
    Frequency Accuracy ± .005% stability +32 to 122°F (0 to 50°C)
    Antenna Type Uses earphone cable
    Squelch Programmable in 20 steps, automatic on loss of RF signal
    Audio
    Frequency Response System: 50 Hz to 15 kHz (±3 dB)
    Signal to Noise Ratio SQ enabled: 80dB; SQ disabled 60dB
    System Distortion <2% total harmonic distortion (THD) at 80% deviation
    Audio Output Jack 3.5 mm connectors, unbalanced, 0 dBu nominal output level, 16 mW maximum, 32 Ohms
    Controlsdwusutbqcxaytfecab
    User Controls Channel up/down, SEEK, volume, SQ enable/disable
    Programming Channel lock, squelch, channel lock out
    Indicators
    LEDs Red, illuminated when unit is on, flashes when batteries are low or to indicate charging, flashes when locked and SEEK is pushed
    LCD Channel Designation, lock status, signal strength indication, programming
    Power
    Battery Type 2 x AA batteries, alkaline or NiMH
    Battery Life 30 hours alkaline, 15 hours NiMH rechargeable
    Battery Charging Time 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 Connector 0.09 OD by 0.02" ID (2.3 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
    Compliance RoHS, WEEE, UL, PSE, CE, CUL, TUV, CB compliant
    Environmental
    Operation Temperature 14 to 104°F (-10 to 40°C)
    Storage Temperature -4 to 122°F (-20 to 50°C)
    Humidity (Non-Condensing) 0 to 95% relative humidity
    Compliance and Approvals
    RF FCC Part 15, Industry Canada
    Physical
    Color Dark gray with white silk screening
    Doors Manually lockable, up, down, and power buttons through door, and other controls behind door
    Dimensions 3 x 5 x 1" (7.6 x 13 x 2.5 cm)
    Weight Unit: 3.9 oz (111 g) Unit with Batteries: 5.8 oz (164 g)
    Packaging Info
    Box Dimensions (LxWxH) 6.0 x 4.5 x 2.1"
  • LA-164 Ear Speaker
    Connections 1 x 3.5 mm Stereo
    Frequency Response 20 Hz to 20 kHz
    Impedance 32 Ohms ±15% @ 1 kHz
    Input Sensitivity Headset: 115 dB ±4 dB @ 1 kHz, 1 mW
    Power Input Rated: 50 mW
    Maximum: 100 mW
    Approvals and Compliance RoHS
    Cable Length 36.0" / 91.4 cm
    Weight 4.0 oz / 113.4 g
    Packaging Info
    Box Dimensions (LxWxH) 2.3 x 2.3 x 1.5"
  • LA-311-01 16-Unit Portable RF Product Charging/Carrying Case (Gray)
    Compatibility Listen Technologies LT-700, LR-200, LR-300, LR-400, LR-500
    NiMH batteries
    Capacity 16 Units
    Power Supply Input 100 to 240 V, 50 to 60 Hz, 1200 mA
    Power Supply Output 7.5 V, 4 A, 30 W
    Approvals and Compliance Power Supply Compliance: UL, CE, GS, TUV, RoHS
    Safety: RoHS
    Material Exterior: hard case
    Interior: foam
    Carrying strap: nylon
    Power Cord Length 12.0' / 3.7 m
    Dimensions 7.0 x 18.5 x 13.8" / 17.8 x 47.0 x 34.9 cm
    Shoulder Strap Length: adjustable 33.0 to 53.0" / 83.8 to 134.6 cm
    Weight 7.6 lb / 3.4 kg
    Packaging Info
    Box Dimensions (LxWxH) 19.2 x 15.0 x 7.7"
  • LA-362 Rechargeable AA NiMH Batteries (Pack of 2)
    Packaged Quantity 2
    Battery Size AA
    Classification NiMH
    Nominal Voltage 1.2 VDC
    Battery Capacity 2300 mA
    Operating Temperature 0 to 131°F / -18 to 55°C
    Weight 1.1 oz / 31.2 g
    Packaging Info
    Box Dimensions (LxWxH) 2.3 x 1.8 x 0.3"

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