Ten-four meaning

The term ten-four means "understood" or "message received" in radio communication.


Ten-four definitions

Word backwards ruof-net
Part of speech Ten-four is an interjection.
Syllabic division ten-four (ten-four)
Plural The plural of "ten-four" is "ten-fours."
Total letters 7
Vogais (3) e,o,u
Consonants (4) t,n,f,r

Ten-Four: Understanding Its Meaning and Origin

Ten-four is a phrase commonly used in two-way radio communication, especially by truckers and other individuals operating CB radios. This phrase is used to acknowledge receipt of a message or to indicate that everything is clear. It is often used to signal a completed task or to confirm understanding.

Origin of the Term

The term ten-four originated from the ten-code system used by law enforcement and other groups in radio communication. In this system, "ten-four" was assigned the meaning of "message received, understood, and acknowledged." Over time, this term became widely adopted in CB radio communication and is now a recognized phrase used by many.

Usage in Popular Culture

The phrase ten-four has made its way into popular culture through movies, TV shows, and music. It is often used to add authenticity to scenes involving CB radio communication or to evoke nostalgia for a bygone era when CB radios were widely used. Despite advancements in technology, the phrase continues to be a familiar and iconic part of communication.

Modern Usage and Interpretation

While CB radios are less commonly used today, the ten-four phrase continues to be recognized and understood by many. It represents a simple and effective way to confirm understanding or acknowledge a message. In a world filled with complex forms of communication, the traditional ten-four remains a timeless and universal way to say "message received."


Ten-four Examples

  1. Police officer: "Can you confirm that license plate number?" Driver: "Ten-four, it is 123-ABC."
  2. Trucker on the CB radio: "We've got a convoy starting up, anyone else joining? Over." Another trucker: "Ten-four, I'll meet you at the designated spot."
  3. Security guard: "We have a suspicious individual approaching the building, over." Dispatcher: "Ten-four, I'll send backup."
  4. Military personnel: "Ready to proceed with the mission, over." Commander: "Ten-four, proceed as planned."
  5. Pilot to air traffic control: "Requesting permission to land on runway 27, over." Air traffic control: "Ten-four, you are cleared to land."
  6. Delivery driver: "I've arrived at the designated address, over." Dispatcher: "Ten-four, please make the delivery and return to base."
  7. Emergency dispatcher: "We have reports of a fire on Elm Street, over." Firefighter: "Ten-four, we are on our way to the location."
  8. Construction worker: "Need more supplies at the construction site, over." Supervisor: "Ten-four, I'll have them delivered right away."
  9. Boat captain: "Requesting permission to dock at pier 5, over." Port authority: "Ten-four, you are cleared to dock."
  10. Paramedic on the radio: "We have a patient with severe injuries, over." Hospital: "Ten-four, prepare to receive the patient in the emergency room."


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  • Updated 07/04/2024 - 10:19:28