What Does "10-4" Mean?
"10-4" is a common phrase used in CB radio communication, particularly among truckers. It's a shortened way of saying "received" or "understood". The term is also sometimes used in other contexts, particularly in police and emergency services, though it's not as prevalent there.
Origins of "10-4"
The use of "10" codes can be traced back to the 1930s, when the Association of Public-Safety Communications Officials-International (APCO) developed a standard system for police and emergency communication. The idea behind these codes was to simplify radio communication and ensure clarity in high-pressure situations.
"10-4" became a popular choice because it was short and easy to remember. It also made it easier for radio operators to distinguish between different types of messages without having to spell out the entire phrase.
Meaning of "10-4" in CB Radio
In CB radio communication, "10-4" is a standard response indicating that the receiver has understood the message. It's a versatile code that can be used in various contexts.
Here are some examples:
- Sender: "10-4, what's your location?"
- Receiver: "10-4. I'm at mile marker 125 on Interstate 80."
Beyond CB Radio
While "10-4" is primarily associated with CB radio communication, it has also found its way into other contexts. For example, you might hear "10-4" used in police and emergency services. However, its use is less frequent in these settings compared to the use of standard radio protocols.
In popular culture:
The "10-4" code has also become a part of popular culture, appearing in films, TV shows, and video games. It's often used as a shorthand for "understood" or "affirmative".
In summary:
"10-4" is a versatile code that originated in CB radio communication. It means "received" or "understood" and is still used today in various contexts. The code's simplicity and ease of use have made it a popular choice for communication in high-pressure situations.
