Listen Tech LK-1-A0 ListenTALK Transceiver

Designed to be the new standard for two-way mobile communications, the ListenTALK Transceiver 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.

Key Features

• 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

Technical Specifications

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
1920 to 1930 MHz - North America
1880 to 1900 MHz - Europe, Australia
Average Power
4 mW - North America
10 mW - Europe, Australia
Typical Range
Indoor 100 m, Outdoor 200 m, depending upon conditions - North America
Indoor 150 m, Outdoor 300 m, depending upon conditions - Europe, Australia
Modulation
GFSK - FHSS
TDD/TDMA/DCA
Security
Subscription- 40 bit (Pin Free)
Authentication- 32 bit
Encryption- 64 bit
NFC Frequency (Near Field Communications)
13.56 MHz
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 - 7 Hours
Li-ion - Leader Mode - 7 hours
AAA - Leader Mode - 4 hours
Typical Charge time
4 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