10 Codes

10 codes, also known as ten signals, are brevity codes used in two-way radio communications, primarily by law enforcement and emergency services. Their purpose is to streamline communication, ensuring that messages are clear and concise, especially under high-pressure situations. Each 10 code corresponds to a specific message; for example, "10-4" means "Acknowledged" and "10-20" refers to "Location."

The use of these codes can reduce the length of radio transmissions, which is particularly important when the airwaves are busy. However, it’s essential for all users within a communication network to understand the codes to avoid confusion. There are variations of 10 codes depending on the agency or region, so standardization within a particular group is crucial for effective communication.

The implementation of 10 codes enhances operational efficiency, allowing personnel to focus on their tasks while minimizing the risk of miscommunication. Despite this, some agencies are moving towards plain language protocols to ensure clarity, especially in multi-agency operations where different codes might lead to misunderstandings.

Below is a list of 10 Codes for your reference:

10-1 Receiving Poorly
10-2 Receiving Well
10-3 Stop Transmitting
10-4 OK, Message Received
10-5 Relay Message
10-6 Busy, Stand By
10-7 Out of Service, Leaving Air
10-8 In Service, subject to call
10-9 Repeat Message
10-10 Transmission Completed, Standing By
10-11 Talking too Rapidly
10-12 Visitors Present
10-13 Advise weather and road conditions
10-16 Make Pickup at…...
10-17 Urgent Business
10-18 Anything for us?
10-19 Nothing for you, return to base
10-20 My Location is ......... or What's your Location?
10-21 Call by Telephone
10-22 Report in Person too ......
10-23 Stand by
10-24 Completed last assignment
10-25 Can you Contact .......
10-26 Disregard Last Information/Cancel Last Message
10-27 I am moving to Channel ......
10-28 Identify your station
10-29 Time is up for contact
10-30 Does not conform to FCC Rules
10-32 I will give you a radio check
10-33 Emergency Traffic at this station
10-34 Trouble at this station, help is needed
10-35 Confidential Information
10-36 Need correct time
10-37 Wrecker needed at …...
10-38 Ambulance needed at .........
10-39 Your message delivered
10-41 Please tune to channel ........
10-42 Traffic Accident at ..........
10-43 Traffic tied up at .........
10-44 I have a message for you
10-45 All units within range please report
10-50 Break Channel
10-60 What is next message number?
10-62 Unable to copy, use phone
10-65 Awaiting your next message or assignment
10-67 All units comply
10-70 Fire at .......
10-71 proceed with transmission in sequence
10-73 Speed Trap at ............
10-75 You are causing interference
10-77 Negative Contact
10-84 My telephone number is .........
10-85 My address is ...........
10-91 Talk closer to the Mike
10-92 Your transmitter is out of adjustment
10-93 Check my frequency on this channel
10-94 Please give me a long count
10-95 Transmit dead carrier for 5 seconds
10-99 Mission completed, all units secure
10-100 Need to go to Bathroom
10-200 Police needed at ..........