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Tour Guide Tranceivers

ListenTALK Tour Guide Communication System Tranceivers. Wireless Tour Guide transmitters and receivers in a single unit.

LK-1 Transceiver

Price: $452.00

Designed to be the new standard for two-way mobile communications, the ListenTALK LK-1 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 ListenTALK headset.


  • One (1) LK-1 ListenTALK Transceiver with Leader Clip
  • One (1) LA-365 Rechargeable Li-ion Battery
  • One (1) LA-401 Universal Ear Speaker
  • One (1) LPT-A207 Breakaway Lanyard


  • 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

Product Specifications


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
Black, Chrome Buttons
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
Via software and USB port on unit or via software and USB port on Docking Station
Headset- 3.5mm TRRS, CTIA compliant
USB- Micro USB, Control and Charging
Charger- 4 Contact, Control and Charging


Male 3.5 mm (TRRS), CTIA compliant


Headphone Output
Speaker Load- 16 - 32 ohm load
Max Output Power- 67 mW, 16 ohm load, Threshold of Clipping
Side Tone- Adjustable
Headset- 3.5mm TRRS, CTIA compliant
USB- Micro USB, Control and Charging
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
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


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
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
Li-ion- Participant- 12 Hours
Typical Operating Time
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


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


Pending (FCC part 15, ICS-03, CE, RCM, RoHS, WEEE)

Architectural Specifications

The transceiver shall be a digital transceiver operating on the 1.9 GHz unlicensed PCS band utilizing Frequency-Hopping Spread Spectrum (FHSS) techniques allowing interference free full duplex communication. The device shall employ a multiply layer security protocol consisting of a 40-bit (pin free) group subscription, 32-bit authentication and a 64-bit encryption scheme enabling secure conversations. It shall be easy to pair and form groups via Near-field communication (NFC), Docking Station or Software Suite. It shall be simple to operate with a Power, Talk and Volume Up and Down buttons. It shall allow up to 10 simultaneous groups to operate in the same area. It shall be powered via a removable non-proprietary rechargeable lithium-ion battery or via an optional 3 AAA alkaline battery compartment.

The transceiver shall have a 3.5 mm TRRS CTIA compliant headset connection allowing operation with a standard electret style headset. It shall have a built-in-microphone with auto detect circuitry if users elect to use their personal ear buds. It shall have a 64 x 128 OLED display with auto diming allowing display of all current status (group name, volume levels, mute, battery status, time remaining, signal strength, unit ID, mode, etc.) The device shall have a leader clip and when inserted the unit automatically designates itself as a leader and allows the leader/presenter to control pairing/group creation and leader talkback modes (listen only, leader only or group).

The transceiver shall have a signal-to-noise ratio of 70 dB or greater and shall have an audio frequency response of 40 Hz – 15 kHz (±3 dB). The device shall incorporate automatic battery charging circuitry to charge and maintain the lithium-Ion battery either via the micro USB port or via the docking station using the additional charging contacts on the bottom of the device.

LK-1 Transceiver
LK-1 Transceiver - Front View
LK-1 Transceiver - Rear View
LK-1 Transceiver - Side View
LK-1 Transceiver - Side View
LK-1 Transceiver - Diagram Front View
LK-1 Transceiver - Diagram Rear View

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