Making Meetings Meet - Translation & Interpretation, Audience Response and Voting Systems
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Everything you need for your conference and meeting communications

Everything you need for your conference and meeting communications

Rent or purchase state of the art conference communications systems with exceptional support from Bramshaw ICS - Making meetings meet since 1994.

We can supply our products & services to help you comply with the COVID Pandemic social distancing requirements including simultaneous interpretation over ZOOM and TEAMS. Please contact us to discuss your needs in these difficult times.

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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
    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 compliant
    USB- Micro USB, Control and Charging
    Charger- 4 Contact, Control and Charging


    Connections/s 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
    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


    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
    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


    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


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

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    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
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    LA-435 AAA Battery Compartment