What is Duplex Communication?

Duplex communication is a method of communication where information can be transmitted and received simultaneously in both directions. This means that two devices can send and receive data at the same time, allowing for real-time communication between them.

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0-2 Users
  • Wireless two way communication headset
  • 2-way full duplex intercom
  • Works up to 300m
  • Noise-cancelling dynamic microphone
0-3 Users
  • Full-duplex
  • Hands Free
  • User friendly
  • Network extension
  • CE Certified
  • Headset options 
SWATCOM Multicom1
0-5 Users
  • Up to 5 users in full duplex 
  • Headset options 
  • 400 meters line of sight 
  • 10 hrs rechargeable battery life
  • 40 channels available 
    SWATCOM Multicom2
    0-10 Users
    • Up to 10 users in hands free (full duplex)
    • Talk range 400m
    • Secure PIN encryption
    • License free
    • Up to 90 listen only users
    SWATCOM Multicom3
    0-10 Users
    • Up to 10 users in hands free (full duplex)
    • Talk range 400m
    • Clips onto safety helmets
    • License free
    • Up to 90 listen only users

    Some examples of where our Duplex communication solutions are used.

    Working at Height

    Stadiums & Arenas

    Emergency Services

    Group Communication

    Railway Workers

    What’s the difference between half-duplex and full-duplex?

    Full-duplex means that speech can be simultaneously transmitted & received (As you would on talking a phone call).

    Half-duplex requires transmission to communicate (Push-to-talk switch).


    Read more here…

    Team communications for professionals.

    SWATCOM provide duplex communications into a wide range of environments around the world, supporting professionals in some of the most demanding environments.

    Our duplex team communications will allow up to 10 users to communicate simultaneously as if you would talking on a phone call (In full-duplex).

    This enables a team to remain in natural free flowing communication, offering the ability to increase safety & efficiency with real time communication between workers.

    What is Half-Duplex?

    Half-duplex communication is a communication method where information can be transmitted in both directions, but only in one direction at a time. This means that the communication channel can either transmit or receive information, but not both simultaneously.

    In other words, when one device is transmitting data, the other device can only receive data, and vice versa. This is in contrast to full-duplex communication, where both devices can transmit and receive data simultaneously.

    Examples of half-duplex communication include two-way radio, walkie-talkies and CB radios, where only one person can talk at a time and the other person must wait until the first person has finished speaking before they can transmit their own message. Another example is the Ethernet bus topology, where nodes can send and receive data, but only one node can send data at a time.

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    Two-way Radio Accessories

    Two-way radio accessories are additional devices or tools that can be used with a two-way radio to enhance its functionality, convenience, and efficiency. Some common two-way radio accessories include:

    Covert Kits

    Full covert and semi covert kits used with two-way radios are typically specialized accessories that allow for discreet communication between individuals without drawing attention to themselves, 

    Throat Mic's

    Throat microphones use a sensitive vibration sensor that picks up the user’s vocal vibrations directly from their throat, which can be particularly useful in noisy or windy environments.


    PTT’s are accessories that are used with two-way radios to activate the Push-to-Talk function. They allow the user to communicate with the radio without having to hold the radio or the microphone button.


    Headset accessories are used with two-way radios that allow for hands-free communication. They consist of a headset that is worn on the user’s head and typically includes speakers and a microphone for transmitting.


    Two-way radio chargers are devices that are used to charge the batteries of two-way radios. Two-way radio chargers are important accessories for keeping two-way radios operational and ready to use.


    “RSMS” typically stands for “Remote Speaker Microphone.” An RSM is a type of accessory used with two-way radios that allows for more effective communication in noisy or hazardous environments.

    Get In Touch

    SWATCOM, Straightpoint building, Clovelly Rd, Southbourne, Emsworth PO10 8PE
    + 01243 375708