ListenTALK Receiver Basic


The LKR-12 ListenTALK Receiver Basic is a one-way device designed for those participants that only need to listen to ListenTALK group conversations. The LKR-12 is equipped with Listen Technologies’ ergonomic design, encryption technology for added security, and easy to use volume control. ListenTALK Receiver Basic is the simplest option for one-way communication among groups of two or more people in any environment. In addition to the included Listen Ear Speaker, ListenTALK can be used with standard smartphone earbuds or Listen Technologies headphones.

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One (1) LKR-12 ListenTALK Receiver Basic
One (1) LA-365 Rechargeable Li-ion Battery
One (1) LA-401 Universal Ear Speaker
One (1) LA-445-BK Breakaway Lanyard


  • Fast and simple one-way communications
  • Simple up and down volume control
  • Encryption technology for added security
  • Compatible with standard earbuds and Listen Technologies headphones
  • Long-lasting lithium-ion rechargeable batteries
  • Optional Alkaline Battery Compartment

Also Needed



Dimensions (H x W x D) with Belt Clip10 x 5.4 x 2.4 cm (3.93 x 2.13 W x 0.93 in.)
Unit Dimensions (H x W x D)10 x 5.4 x 1.6 cm (3.93 x 2.13 W x 0.63 in.)
Unit Weight79 g (2.79 oz.)
Shipping Weight206 g (7.20 oz) with 454 g (1.0 lbs.) minimum
Enclosure materialPC ABS Plastic
ColorBlack, Chrome Buttons
IndicatorsVariable brightness LED- Green/White multifuntion (On, Charge Status, Battery Status)
User ControlsVolume up, Volume down, Power/Status
ProgrammingVia software and USB port on unit or via software and USB port on Docking Station
ConnectionsHeadset- 3.5mm TRRS, CTIA complaint
USB- Micro USB, Control and Charging
Charger- 4 Contact, Control and Charging


Headphone OutputSpeaker Load- 16 - 32 ohm load
Max Output Power- 67 mW, 16 ohm load, Threshold of Clipping
SystemFrequency Response- 40 Hz to 15 kHz +/- 3dB, 22kHz low pass filter
SNR- 70 dB, A- weighted, Threshold of Clipping
THD- 0.5% @ 1kHz, 22kHz low pass enabled


Operating Frequency1920 to 1930 MHz - North America
1880 to 1900 MHz - Europe, Australia
1895 to 1905 MHz - Japan
Typical RangeIndoor 100 m, Outdoor 200 m, depending upon conditions - North America, Japan
Indoor 150 m, Outdoor 300 m, depending upon conditions - Europe, Australia
ModulationGFSK - FHSS
SecuritySubscription- 40 bit (Pin Free)
Authentication- 32 bit
Encryption- 64 bit

+Power and Battery Management

Battery TypeLithium – ion, rechargeable non-proprietary removable, 1200 mAh
Optional- 3 AAA Battery Compartment
Typical Operating TimeLi-ion- Participant- 12 Hours
AAA – Participant Mode – 7 Hours
Typical Charge time4 Hours
Power Save ModesPower down on loss of signal
Power down on disconnection of headphone (1 min)
Power down on charging


TemperatureOperation- -10 °C (14 °F) to 40 °C (+104 °F)
Storage- -20 °C (-4 °F) to 50 °C (+122 °F)
Relative Humidity0 to 95% relative humidity, non-condensing


StandardsFCC part 15, ICS-03, CE, RCM, MIC, RoHS, WEEE
* Specifications subject to change without notice.



+What is the range of ListenTALK units?

ListenTALK (North America Mode) units have a range of up to 200 m depending upon conditions, (Europe/Australia Mode) units have a range of up to 300 m depending upon conditions. These are "line of sight" specifications.

+ListenTALK can have up to 20 groups in "one area". What does "one area" consist of?

One area consists of the typical range, which is 100 m indoors and 200 m outdoors depending on conditions (North America) and 150 m indoors and 300 m outdoors depending on conditions. (Europe version)