Audio Transceivers for Two Way Communication

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.

Includes

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

Highlights

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

Configurations

LK-1-A0 ListenTALK Transceiver (North America)

LK-1-E0 ListenTALK Transceiver (Europe EU28)

LK-1-Z0 ListenTALK Transceiver (Australia)

Architectural Specs

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.

The ListenTALK LK-1 is specified.

Q	How many channels are available with ListenTALK?
	A	ListenTALK uses 1.9GHz spread spectrum. It does not use “channels” because it is constantly changing frequencies.
Q	How many participants can be in each ListenTALK tour group?
	A	In a ListenTALK tour group there can be an unlimited number of participants.
Q	How many groups in the same room can ListenTALK support?
	A	ListenTALK’s current specification is that you can have 10 simultaneous groups operating in the same room.
Q	How many simultaneous groups will ListenTALK support?
	A	ListenTALK supports up to 10 simultaneous groups within each service area. North America service area: 100 m indoor, 200 m outdoor, depending on conditions Europe service area: 150 m indoor, 300 m outdoor, depending of conditions
Q	ListenTALK can have up to 10 groups in “one area”. What does “one area” consist of?
	A	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)
Q	Will iOS headsets work with ListenTALK?
	A	Yes, all iOS headsets will function correctly with the ListenTALK Transceiver (LK-1)
Q	Will Android headsets work with ListenTALK?
	A	Android version headsets (roughly 2014 and newer) will function correctly. The older versions have a different microphone/ground configuration making them incompatible with the ListenTALK Transceiver (LK-1).