Listen LK-1-A0 ListenTALK Transceiver

Info

Designed to be the new standard for two-way mobile communications, the ListenTALK Tranceiver is the smartest system available. The all-in-one device, equipped with Listen Technologies' exclusive encryption technology and push-to-talk functionality, provides the simplest option for communication and collaboration among two or more people in any environment. In addition to the included Listen Ear Speaker, ListenTALK can be used with standard smartphone earbuds or a Listen Technologies headset.

Fast and simple two-way communication
Push-to-talk functionality
Exclusive encryption technology for added security
Compatible with standard earbuds and Listen Technologies headsets
Long-lasting lithium ion rechargeable batteries
Optional Alkaline Battery Compartment

Physical

Dimensions (H x W x D) with Belt Clip 10 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 Weight 79 g (2.79 oz.)
Shipping Weight 206 g (7.20 oz) with 454 g (1.0 lbs.) minimum
Enclosure material PC ABS Plastic
Color Black, Chrome Buttons
Indicators
- Display- 64 x 128 OLED, Variable brightness
- LED- RED/White multifunction (Mute, Charge Status)
User Controls Volume up, Volume Down, Talk, Power/Status, Talk Modes, Pairing
Programming Via software and USB port on unit or via software and USB port on Docking Station
Connections
- Headset- 3.5mm TRRS, CTIA complaint
- USB- Micro USB, Control and Charging
- Charger- 4 Contact, Control and Charging

Audio

Headphone Output
- Speaker Load- 16 - 32 ohm load
- Max Output Power- 67 mW, 16 ohm load, Threshold of Clipping
- Side Tone- Adjustable
Microphone Input
- Compatibility- Electret, external bias
- Bias- 3 volt, 2 mA Current Maximum
- Sensitivity Requirement -28 to - 50 dBV/Pa
Internal Microphone
- Switching- Auto detect on jack insertion or Manual
- Maximum Input Level- 109 DBSPL
- Gain- Adjustable, 30 dB range
System
- Frequency 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

Radio

Operating Frequency
- North America- 1920 to 1930 MHz
- Europe- 1880 to 1900 MHz
Average Power
- North America- 4 mW
- Europe- 10 mW
Typical Range
- North America- Indoor 100 m, Outdoor 200 m, depending upon conditions
- Europe- Indoor 150 m, Outdoor 300 m, depending upon conditions
Modulation
- GFSK - FHSS
- TDD/TDMA/DCA
Security
- Subscription- 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- 3 AAA Battery Compartment
Typical Operating Time
- Li-Ion- Participant- 12 Hours
- AAA – Participant Mode – 9 Hours
- LI-ion – Leader Mode – 8 hours
- AAA – Leader Mode – 6 hours
Typical Charge time 2.5 - 3 Hours
Power Save Modes
- Power down on loss of signal
- Power down on disconnection of headset (1 min)
- Power down on charging

Environmental

Temperature
- Operation- -10 °C (14 °F) to 40 °C (+104 °F)
- Storage- -20 °C (-4 °F) to 50 °C (+122 °F)
Relative Humidity 0 to 95% relative humidity, non-condensing

Compliance