10-23. Arrived at Scene. Arrived at Scene. Breaking In (In Progress)
The number “10” is a size designator with no numerical meaning. The number “32” refers to 32 threads per inch. You can identify a 10-32 screw by measuring the diameter at exactly 3/16″ (4.76 mm).
Ten-codes, also called ten-signals, are abbreviations used to shorten common phrases in radio communications. Thus allowing for brevity and standardization of messages. They have been widely used by law enforcement, and in Citizens Band (CB) radio transmissions.
10-4 is an affirmative signal: it means “OK.” The ten-codes are credited to Illinois State Police Communications Director Charles Hopper who created them between 1937–40 for use in radio communications among cops. In the 1930s, radio technology was still relatively new and limited.
10-1 meant “Receiving poorly,” 10-2 meant “Receiving well,” 10-3 was for “Stop transmitting,” 10-4 signaled “Acknowledgement,” and so on. Tacking a 10 before each number was a troubleshooting tactic.
10-66 Suspicious person. 10-67 Person calling for help. 10-68 Call for police made via telephone.
10-5 Relay to/from. 10-6 Busy. 10-7 Out of Service.
Inch thread sizes are specified by diameter and threads per inch. Diameter is also known as screw size. For those with a diameter smaller than 1/4", screw size is indicated by a number (e.g., #10 or No. 10). For example, a 10-24 screw has 0.190" thread diameter and has 23 threads per inch.
This particular code is used to indicate an officer's end of tour. While 10-42 is most frequently used when an officer has completed his tour of service for the day, it is also used in conjunction with funeral proceedings when an officer has been killed in the line of duty.
10-50. Traffic Accident (PD No Injury, PI Injury, LSA Left scene) 10-51. Tow Truck. 10-52.
As intricate as evaluating NFL potential has become, the 40 is one of simplest tests there is in football: run 40 yards, we'll time you. GO! For players who run it fast enough, it's a possible opening to something more.
Auto accident — with injury. 10-9. Repeat message. 10-53. Auto accident — fatal.
Code 5: Shelter in Place.
10-200. Police needed at [insert location]
On a film set, 10-1 is the walkie talkie code for the bathroom. While literally meaning you need to pee, using as this as a catch-all saves your film crew from t.m.i.
Code 4 Meaning. “Code 4” means everything is under control or the scene is safe.
Police officer retirement
Often when an officer retires, a call to dispatch is made. The officer gives a 10-7 code (Out of service) and then a 10-42 code (ending tour of duty).
CODE 3 EMERGENCY RESPONSE A “CODE 3” response is defined as an emergency response determined by factors such as immediate danger to officer or public safety that require an expedited priority response utilizing lights and sirens.
Signal 43 - RUSH! Officer Needs Help!
"Breaker 1/9" is originally a Citizens' Band radio slang term telling other CB users that you'd like to start a transmission on channel 19, and is the phrase that starts C. W. McCall's 1975 novelty hit "Convoy".
“Breaker breaker 1-9, anyone got a copy?” This is a trucker saying that is widely used commonly as a courtesy call for the truckers to get access to the CB radio Channel.
10-9: Repeat Message. 10-10: Transmission completed, standing by. 10-11: Talking too rapidly. 10-12: Visitors present.