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Citizens Band (CB) Radio 10-Codes
C.W. McCall's "Convoy" on Mike Douglas Show in 1975.
The origin of the "10 codes" used in Citizens Band (CB) radio communications is not entirely clear, and there are several theories about their development.
One theory suggests that the codes were developed by the Illinois State Police in the 1930s to enable faster and clearer communication over radio channels. Another theory suggests that the codes were developed by the United States Army Signal Corps during World War II.
Regardless of their origin, the codes became widely used by CB radio operators in the 1960s and 1970s. They were popularized in part by the 1975 movie "Smokey and the Bandit," which featured the use of CB radio and the 10-4 code ("message received"). C.W. McCall helped popularized CB radio with his "Convoy" song in 1975.
Today, the 10 codes are still used by some CB radio operators, although they have largely been replaced by plain language communication in many areas.
This list of "10-Codes" came from my copy of a Radio Shack book titled, "All About CB Two-Way Radio," by Hy Siegel, KXL 2778 / K9CCN
| Code | Meaning | Code | Meaning | ||
|
10-1 10-2 10-3 10-4 10-5 10-6 10-7 10-8 10-9 10-10 10-11 10-12 10-13 10-16 10-17 10-18 10-19 10-20 10-21 10-22 10-23 10-24 10-25 10-26 10-27 10-28 10-29 10-30 10-32 10-33 10-34 10-35 10-36 10-37 10-38 |
Receiving Poorly Receiving Well Stop Transmitting OK, Message Received Relay Message Busy, Stand By Out of Service, Leaving Air In Service, Subject To Call Repeat Message Transmission Completed, Standing By Talking Too Rapidly Visitors Present Advise Weather/Road Conditions Make Pickup At ... Urgent Business Anything For Us? Nothing For You, Return To Base My Location Is ... Call By Telephone Report in Person to ... Stand By Completed Last Assignment Can You Contact ... Disregard Last Information I Am Moving To Channel ... Identify Your Station Time Is up For Contact Does Not Conform to FCC Rules I Will Give You a Radio Check Emergency Traffic at This Station Trouble at This Station, Help Needed Confidential Information Correct Time Is ... Wrecker Needed at ... Ambulance Needed at ... |
10-39 10-41 10-42 10-43 10-44 10-45 10-46 10-50 10-60 10-62 10-63 10-64 10-65 10-67 10-70 10-71 10-73 10-75 10-77 10-81 10-82 10-84 10-85 10-89 10-90 10-91 10-92 10-93 10-94 10-95 10-99 10-200 |
Your Message Delivered Please Tune To Channel ... Traffic Accident at ... Traffic Tie-up at ... I Have a Message For You (or ... ) All Units Within Range Please Report Assist Motorist Break Channel ... What Is Next Message Number? Unable to Copy, Use Phone Net Directed to ... Net Clear Awaiting Your Next Message / Assignment All Units Comply Fire At ... Proceed with Transmission In Sequence Speed Trap at ... You Are Causing Interference Negative Contact Reserve Hotel Room for ... Reserve Room for ... My Telephone Number Is ... My Address Is ... Radio Repairman Needed At ... I Have TVI Talk Closer to Mike Your Transmitter Is out of Adjustment Check My Frequency on This Channel Please Give Me a Long Count Transmit Dead Carrier for 5 Seconds Mission Completed, All Units Secure Police Needed at ... |
All About CB
<front cover>
<back cover> Here is my |
Posted March 14, 2023
Copyright: 1996 - 2026 |
About RF Cafe RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The World Wide Web (Internet) was largely an unknown entity at the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps while tying up your telephone line, and a lady's voice announced "You've Got Mail" when a new message arrived... |
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