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  • Listen Technologies LK-1 ListenTALK Transceiver set
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Listen Technologies LK-1 ListenTALK Transceiver With Encryption

Listen Technologies LK-1 ListenTALK Transceiver With Encryption

SoundPro Item: 60241 | Part Number: LK-1-A0

$426.00
$498.00 $426.00
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MSRP: $498.00 | MAP: $426.00

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  • Push-To-Talk Functionality Maintains Clear Channels During Multi-Party Group Communication
  • 64-Bit Encryption Protocol Secures Proprietary Content For Corporate And Facility Tours
  • DECT Frequency-Hopping Spread Spectrum Avoids Wi-Fi And UHF Band Congestion
  • Standard Smartphone Earbud Compatibility Eliminates Dedicated Headset Inventory Requirements
  • NFC Pairing Accelerates Deployment For Rental And Staging Turnover Cycles
  • Dual Battery Options Support Field Swaps With Rechargeable Or AAA Emergency Power
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The ListenTALK system addresses the critical need for mobile two-way communication in museums, corporate events, and accessibility scenarios where traditional one-way assistive listening falls short. Designed for integrators and AV teams supporting guided tours, multilingual interpretation, and production coordination, it delivers encrypted DECT wireless with simultaneous talk and listen capability across distributed groups.

Push-to-talk operation keeps channels clear during multi-party exchanges, while 64-bit encryption ensures content security for corporate briefings and proprietary facility tours. The unit works with standard smartphone earbuds or professional Listen Technologies headsets, eliminating the need for dedicated inventory. Rechargeable lithium-ion batteries provide 12-hour participant runtime or 7-hour leader mode operation, with optional AAA compartment for emergency field swaps.

DECT frequency-hopping architecture avoids Wi-Fi and UHF congestion common in convention centers and dense urban installations. NFC pairing accelerates deployment for rental and staging teams managing rapid turnover. OLED display and intuitive controls reduce training time for non-technical tour guides and volunteer staff.

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Specifications

Certifications
Compliance
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 (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
3.93x2.13x0.93" (10x5.4x2.4 cm)
Unit Dimensions (HxWxD)
3.93x2.13x0.63"(10x5.4x1.6 cm)
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 HoursLi-ion – Leader Mode – 7 hoursAAA – Leader Mode – 4 hours, Typical Charge time 4 Hours, Power Save Modes Power down on loss of signalPower down on disconnection of headset (1 min)Power down on charging
Audio
Headphone Load
16-32 Ohm
Max Output Power
67 mW (16 Ohm Load, Threshold Of Clipping)
Microphone Compatibility
Electret, External Bias
Microphone Bias
3 Volt, 2 mA Current Maximum
Microphone Sensitivity Requirement
-28 To -50 dBV/Pa
Internal Microphone Max Input Level
109 dB SPL
Internal Microphone Gain
Adjustable, 30 dB Range
Frequency Response
40 Hz To 15 kHz +/- 3 dB, 22 kHz Low Pass Filter
SNR
70 dB, A-Weighted, Threshold Of Clipping
THD
0.5% @ 1 kHz, 22 kHz Low Pass Enabled
Side Tone
Adjustable
Audio
Headphone Output Speaker Load- 16 - 32 ohm loadMax Output Power- 67 mW, 16 ohm load, Threshold of ClippingSide Tone- Adjustable, Microphone Input Compatibility- Electret, external biasBias- 3 volt, 2 mA Current MaximumSensitivity Requirement -28 to - 50 dBV/Pa, Internal Microphone Switching- Auto detect on jack insertion or ManualMaximum Input Level- 109 DBSPLGain- Adjustable, 30 dB range, 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
Display
64 x 128 OLED, Variable Brightness
LED Indicator
Red/White Multifunction (Mute, Charge Status)
Controls
User Controls
Volume Up, Volume Down, Talk, Power/Status, Talk Modes, Pairing
Programming
Via Software And USB Port On Unit Or Docking Station
Included Items
Transceiver
LK-1 With Leader Clip
Rechargeable Battery
LA-365 Li-Ion 1200 mAh
Ear Speaker
LA-401 Universal
Lanyard
LA-445-BK Breakaway
Environmental
Operating Temperature
-10°C To 40°C (14°F To 104°F)
Storage Temperature
-20°C To 50°C (-4°F To 122°F)
Relative Humidity
0-95% Non-Condensing
General
Physical
Indicators Display- 64 x 128 OLED, Variable brightnessLED- RED/White multifunction (Mute, Charge Status), 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, Average Power 4 mW - North America10 mW - Europe, Australia5 mW - 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
NFC Frequency (Near Field Communications)
13.56 MHz
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
Average Power (North America)
4 mW
Average Power (Europe, Australia)
10 mW
Average Power (Japan)
5 mW
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
NFC Frequency
13.56 MHz
Power
Battery Type
Lithium-Ion Rechargeable 1200 mAh (Removable)
Optional Battery
3 AAA Battery Compartment
Operating Time Li-Ion (Participant)
12 Hours
Operating Time AAA (Participant)
7 Hours
Operating Time Li-Ion (Leader)
7 Hours
Operating Time AAA (Leader)
4 Hours
Typical Charge Time
4 Hours

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