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  • Listen Technologies LKR-12-A0 ListenTALK Receiver Basic front
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Listen Technologies LKR-12 ListenTALK Receiver Basic

Listen Technologies LKR-12 ListenTALK Receiver Basic

SoundPro Item: 39150 | Part Number: LKR-12-A0

$237.00
$279.00 $237.00
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MSRP: $279.00 | MAP: $237.00

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  • Encrypted DECT Transmission Prevents Unauthorized Access To Group Communications
  • Frequency-Hopping Spread Spectrum Modulation Reduces Interference In Crowded RF Environments
  • Rechargeable Lithium-Ion Battery System Eliminates Disposable Cell Costs
  • Optional AAA Alkaline Compartment Provides Backup Power Without Charging Infrastructure
  • USB Programming Port Enables Centralized Configuration Management Across Device Fleets
  • Automatic Power-Down On Signal Loss Conserves Battery During Idle Periods
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Designed for professional assistive listening applications where participants require receive-only capability, this device serves tour guides, houses of worship, museums, and interpretation environments. The receiver operates on DECT frequencies with frequency-hopping spread spectrum modulation, providing interference-resistant audio transmission across indoor and outdoor venues.

Engineered for multi-user deployments, the unit incorporates 64-bit encryption alongside 32-bit authentication to prevent unauthorized listening. The rechargeable lithium-ion power system delivers 12-hour runtime, while an optional AAA alkaline compartment provides backup power in field conditions. Programming occurs via USB connection either directly or through a docking station, enabling centralized configuration management.

The 3.5mm TRRS headphone jack accepts CTIA-compliant earbuds and professional headsets, driving 16–32 ohm loads with 67 milliwatts of output power. Frequency response extends from 40 Hz to 15 kHz, suited for speech intelligibility and program audio reproduction across interpretation, worship, and guided tour scenarios.

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Specifications

Certifications
Compliance Standards
FCC Part 15, ICS-03, CE, RCM, MIC, RoHS, WEEE
Dimensions
With Belt Clip (H x W x D)
10 x 5.4 x 2.4 cm (3.93" x 2.13" x 0.93")
Unit Only (H x W x D)
10 x 5.4 x 1.6 cm (3.93" x 2.13" x 0.63")
Dimensions (HxWxD) with Belt Clip
10x5.4x2.4 cm (3.93x2.13x0.93”)
Unit Dimensions (HxWxD)
10x5.4x1.6 cm (3.93x2.13x0.63”)
Weight
Unit Weight
79 g (2.79 oz)
Shipping Weight
206 g (7.20 oz)
Electrical
Power and Battery Management
Battery Type Lithium – ion, rechargeable non-proprietary removable, 1200 mAhOptional- 3 AAA Battery Compartment, Typical Operating Time Li-ion- Participant- 12 HoursAAA – Participant Mode – 7 Hours, Power Save Modes Power down on loss of signalPower down on disconnection of headphone (1 min)Power down on charging
Audio
Frequency Response
40 Hz To 15 kHz ±3 dB, 22 kHz Low Pass Filter
Signal-To-Noise Ratio
70 dB, A-Weighted, Threshold Of Clipping
Total Harmonic Distortion
0.5% @ 1 kHz, 22 kHz Low Pass Enabled
Headphone Output Speaker Load
16–32 Ohm
Maximum Output Power
67 mW, 16 Ohm Load, Threshold Of Clipping
Audio
Headphone Output Speaker Load- 16 - 32 ohm loadMax Output Power- 67 mW, 16 ohm load, Threshold of Clipping, System Frequency Response- 40 Hz to 15 kHz +/- 3dB, 22kHz low pass filterSNR- 70 dB, A- weighted, Threshold of ClippingTHD- 0.5% @ 1kHz, 22kHz low pass enabled
Connectivity
Headset Jack
3.5 mm TRRS, CTIA Compliant
USB Port
Micro USB (Control And Charging)
Charger Contact
4-Contact (Control And Charging)
Construction
Enclosure Material
PC ABS Plastic
Color
Black With Chrome Buttons
Controls
User Controls
Volume Up, Volume Down, Power/Status
Indicators
Variable Brightness LED (Green/White Multifunction: On, Charge Status, Battery Status)
Programming
Via Software And USB Port On Unit Or Docking Station
Included Items
Receiver Quantity
1
Rechargeable Battery (LA-365)
1
Universal Ear Speaker (LA-401)
1
Breakaway Lanyard (LA-445-BK)
1
Environmental
Operating Temperature
-10 °C (14 °F) To 40 °C (104 °F)
Storage Temperature
-20 °C (-4 °F) To 50 °C (122 °F)
Relative Humidity
0 To 95%, Non-Condensing
General
Physical
Connections Headset- 3.5mm TRRS, CTIA complaintUSB- Micro USB, Control and ChargingCharger- 4 Contact, Control and Charging
Radio
Operating Frequency 1920 to 1930 MHz - North America1880 to 1900 MHz - Europe, Australia1895 to 1905 MHz – Japan, Typical Range Indoor 100 m, Outdoor 200 m, depending upon conditions - North America, JapanIndoor 150 m, Outdoor 300 m, depending upon conditions - Europe, Australia, Modulation GFSK - FHSSTDD/TDMA/DCA, Security Subscription- 40 bit (Pin Free)Authentication- 32 bitEncryption- 64 bit
Environmental
Temperature Operation- -10°C (14°F) to 40°C (+104°F)Storage- -20°C (-4°F) to 50°C (+122°F)
Radio
Operating Frequency (North America)
1920–1930 MHz
Operating Frequency (Europe, Australia)
1880–1900 MHz
Operating Frequency (Japan)
1895–1905 MHz
Typical Range Indoor (North America, Japan)
100 m
Typical Range Outdoor (North America, Japan)
200 m
Typical Range Indoor (Europe, Australia)
150 m
Typical Range Outdoor (Europe, Australia)
300 m
Modulation
GFSK-FHSS, TDD/TDMA/DCA
Subscription Security
40-Bit (Pin Free)
Authentication
32-Bit
Encryption
64-Bit
Power And Battery Management
Battery Type
Lithium-Ion Rechargeable Non-Proprietary Removable, 1200 mAh
Optional Battery Type
3 AAA Alkaline Battery Compartment
Typical Operating Time (Li-Ion)
12 Hours
Typical Operating Time (AAA)
7 Hours
Typical Charge Time
4 Hours
Power Save Modes
Power Down On Loss Of Signal, Power Down On Headphone Disconnection (1 Min), Power Down On Charging

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