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
