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16
USING COMMON 10-CODES
Citizen's band operators have largely
adopted the following 10-codes for stan-
dard questions and answers. These
codes permit faster and more precise
communication in noisy areas. This ta-
ble lists codes adopted by the Associat-
ed Public-Safety Communications
Officers (APCO).
Note:
Although this table lists the 10-
codes’ meanings in the form of a state-
ment, they can also be phrased as
questions (10-6: Are you busy?, 10-20:
What is your location?).
Code Meaning
10-1 Your signal is bad.
10-2 Your signal is good.
10-3 Stop transmitting.
10-4 Message received and under-
stood.
10-5 Relay information to ______.
10-6 I am busy or are you busy?
10-7 Out of service.
10-8 In service.
10-9 Repeat last message.
10-10 Negative (NO).
10-11 ____________in service.
10-12 Stand by.
10-13 Report road/weather
conditions.
10-14 Information.
10-15 Message delivered.
10-16 Reply to message.
10-17 En route.
10-18 Urgent
10-19 Contact_______
10-20 What’s your location?
10-21 Call______by telephone.
10-22 Cancel last message.
10-23 Arrived at the scene.
10-24 Assignment complete.
10-25 Meet______________.
10-26 Estimated time of arrival
is___
10-30 Use caution.
10-31 Pick up.
10-33 Emergency traffic. Clear the
channel.
10-34 What time is it?
10-41 Switch to Channel –
10-62 Cannot understand.
Code Meaning
21-1574.fm Page 16 Thursday, May 13, 1999 4:03 PM