![]() Truckers also have their own versions of 10 codes, some of which have the same meanings as law enforcement and others all their own. Hopper understood that adding the "10" before the codes gave the radios time to catch up, ensuring that complete and abbreviated messages got across. Charles "Charlie" Hopper (District 10), then communications director for the Illinois State Police, is credited with inventing the codes in the 1930s.Īt the time, limitations in radio technology meant that there was a brief delay between the time an officer pressed the button to talk and when the transmission of their voice would begin. ![]() Just like "roger" and "mayday," 10-codes date back to the first half of the 1900s. Here are some of the most popular 10-codes and what they mean:ġ0-4: "OK" or "Affirmative," similar to "roger"ġ0-36: Current time, "Can I get a 10-36?"ġ0-69: "Message received," again, much like "roger"ġ0-77: Estimated time of arrival, "Alpha 10-77" In short, 10-codes (or 10-signals) are numbers that stand in for phrases. You're just as likely to hear a 10-code working in the public safety arena as you are in a manufacturing company. CB radio lingo is still used by truckers today and continues to evolve. Here are some of the most common rated PG examples of CB radio lingo (remember that we said it was colorful).Īdvertising: a marked police car with its lights flashingīear/Smokey: police officer refers to the fact that the Smokey Bear character created by the Ad Council wears a hat similar to those of many highway patrol officers.Įvel Knievel: police officer on a motorcycle named for the motorcycle stuntman.Īlligator/Gator: large piece of blown-out tire on the roadįour-wheeler: any vehicle with only 2 axles anything that isn’t an 18-wheeler/semi truckġ0-codes provide a succinct way of communicating via radio that spans users and industries. "Wilco": Literally means "will comply" and indicates that the speaker is intending to complete the task that's been asked of them. "Read/Copy": Both words are used to ask if the speaker is being heard or understood, for instance, "Do you read me?" or "Do you copy?" Think of it as the digital radio version of "Can you hear me now?" "Out": Indicates that the person is signing off. "Over": Used at the end of a sentence or phrase to indicate that the person is done speaking. The term dates back to the early 1920s and is derived from a French word m'aidez, which means "come help me." Most often, "mayday" is used to indicate that a vehicle or transport, such as a plane, boat, helicopter, etc., is going down. It essentially means "life-threatening emergency" and is recognized internationally as a universal distress signal. "Mayday": A term that you will hopefully only ever encounter in the movies and not in real life. military adopted the term "roger" for the same reason. "Roger" stems from the days of Morse code communications when the letter "R" was used to indicate "received" or "message understood." As radio communications became more popular and the technology evolved, the U.S. "Roger That": A quick way to say that you understand what the other person is saying. Here are some of the terms that will most likely ring a bell even if you're brand new to radio communications. There are certain radio terms that are likely already familiar to radio and non-radio users alike because of their prevalence in popular culture, from police radio codes on TV to CB radio lingo in songs and movies. To help you understand some of the most popular radio lingo used today, we broke it down here. ![]() Unfortunately, things aren't that clear when you aren't familiar with the terminology. These phrases are examples of short-hand radio lingo that's been in place for decades, all designed to create succinct and crystal clear communications for radio users. Have you ever been communicating over two-way digital radio and heard radio lingo that had you scratching your head? Say you finished saying something important and the person you were speaking to responded "10-4," or "Roger that." Maybe they even replied with a "Sure, what's your 20?" when you talked about meeting up.
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